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Texas Instruments PGA309EVM-USB User's Manual

1. Figure 17 PGA309EVM USB Software EEPROM Tab This tab offers a debug utility that allows you to view load edit and save various EEPROM values This tab also contains displays for the two different sections of the PGA309 EEPROM However most users will create the EEPROM table itself using the features of the Auto Calibrate tab SBOUO084 February 2010 PGA309EVM USB 27 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS PGA309EVM USB Software Overview www ti com 4 7 Block Diagram Tab The Block Diagram tab shown in Figure 18 gives you full access to all the elements in the PGA309 Making a change to the block diagram is reflected in the Register Table see Section 4 5 This feature is helpful when experimenting with your specific setup 49 PGA309EVM yottware Ele Edt Operate lods Window Help e GEN seam f s we j STOP C Figure 18 PGA309EVM USB Software Block Diagram 28 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Software Overview 4 8 Auto Calibrate Tab The Auto Calibrate tab is used to calibrate a PGA309 module over temperature This process can be done with a real world sensor or with an emulated sensor It is recommended that you first become familiar with the calibration process by using the sensor emulator
2. amp zo titty Maen ds we 3 odio Sirio dio T EH ote ee Wm o esj e 5 gt E i votes Y USB uS Me FER ES 25 Cable e 8 idis J2 ry T4 5 Th PGAZOS Test Board Dic em em en a t g E O Required External Connections Sensor Connection Figure 10 PGA309EVM USB Typical Hardware Connections SBOUO84 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated PGA309EVM USB 17 I TEXAS INSTRUMENTS PGA309EVM USB Hardware Setup www ti com 3 8 Connecting the Hardware To connect the two PCBs of the PGA309EVM USB together gently push on both sides of the D SUB connectors as shown in Figure 11 Make sure that the two connectors are completely pushed together that is loose connections may cause intermittent operation Figure 11 Connecting the Two EVM PCBs 18 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Hardware Setup 3 4 Connecting Power After the two parts of the PGA309EVM USB are connected as shown in Figure 12 connect the power to the EVM Always connect power before connecting the USB cable If you connect the USB cable before connecting the power the computer will attempt to communicate with an unpowered device that will not be able to respond Connect 6V dc power to J5 or 9V power to T3 0 3 e o
3. Connections 1 OMMPI Vref NC I TEXAS INSTRUMENTS www ti com T2 VEC Veef_Be To Voltage Output GND PROTO PGAXP Opto External Feedisck R2 vail Vbi Varl LX SCK ISO DC SDA SO CTRL Ow to PRG To Current Output LIIL PRGISDAISCLI Test Figure 5 PGA309 Test Board Schematic Power Reference and Digital Connections PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com System Setup Figure 6 shows the output section of the PGA309EVM_Test_Board There are two output options voltage output and current output The voltage output option is selected by placing JMP9 in the NC position The current output option is selected by moving JMP9 to the Vour to XTR position Current Output XTR117 Current Loop XTR115 Current Output Vent to XP NC vs m PGA REF OUT Power XTR117 l L SIR Soop re XIR Loop Figure 6 PGA309_Test_Board Schematic Output Circuitry In voltage output mode C10 10nF is connected to the PGA309 output This capacitor is used for radio frequency interference RFI and electromagnetic interference EMI immunity This component should be included in your design if possible In current output mode the PGA309 output is connected to a voltage to current V I converter XTR117 The sum of R6 and
4. 1 191kO R7 MD 191kQ 1 10W 1 0603 Yageo Corporation ERJ 3EKF1913V 1 11 3kQ R6 Sap 11 3kQ 1 10W 1 0603 Yageo Corporation ERJ 3EKF1132V 2 39 2kO R3 R4 BE SSLERICITONE 17 0603 Yageo Corporation RCO603FR 0739K2L 1 50kQ R23 Sqn Sunsuma RR0816P 4992 D 68C 1 2 49kO R24 PARE ZAIK IIB duo BUS Sunsuma RRO816P 2491 D 39H 0 omit R1 R2 R9 Omit not installed 1 PGA309 U1 Smart Programmable Sensor Texas Instruments PGA309AIPWT 1 BNC P1 Gor ector Jack BNC Vertical 502 Tyco Electronics Amp 5227699 1 2 iro U4 U6 IC Op Amp 1 8V 0 DRIFT SOT23 5 Texas Instruments OPA333AIDBVT 1 DAC8555 U3 IC DAC 16BIT QUAD 16 TSSOP Texas Instruments DAC8555IPW 1 24LC16BT U5 IC SRL FEPROM 16K2 5V Microchip Technology 24LC16BT I OT SOT23 5 1 XTR117 U2 IC 4mA 20mA Current Loop TX Texas Instruments XTR117AIDGKT 8 MSOP 6 8V TVS Zener Unidirectional 600W 1 transzorb D2 6 8V SMB ON Semiconductor P6SMB6 8AT3G uc Micro Commercial 1 SMAJ43A D3 TVS 400W 43V Unidirectional SMA Ste SMAJ43A TP Diode Schottky 70V 200mA Micro Commercial 1 BAS70TP D4 ore Ponens BAS70TPMSCT ND 1 NPN at SE NEN SS I Ms Fairchild Semiconductor BCP55 2 Position Terminal Strip Cage F 5 ED300 2 T1 T2 T3 T4 T5 Clamp 45 15A Dove tailed On Shore Technology Inc ED300 2 12 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com System Setup
5. l I emk Figure 8 PGA309_Test_Board Connections to USB DAQ Platform and EEPROM SBOUO84 February 2010 PGA309EVM USB 11 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated System Setup 23 PGAS309 Test Board Parts List Table 1 describes the parts list for the PGA309 Test Board Table 1 PGA309 Test Board Parts List I TEXAS INSTRUMENTS www ti com Qty Value Ref Des Description Vendor Part Number 1 560pF C6 Capacitor ceramic eee Panasonic ECG ECJ 1VC1H561J 3 100pF C3 C5 C13 CMM ceramic S60PF SUV NE ECJ 1VC2A101J 6 O uF C4 C7 C8 C9 C14 C17 er E OTHE 2N y carmi Tav Kemet CC0603ZRY5V8BB104 Capacitor ceramic 01uF 10 2 O1pF C15 C16 eee AVX 06031C103KAT2A Capacitor 1000pF 100V ceramic n i 1 1nF C18 X7R 0603 Panasonic ECG ECJ 1VB2A102K Capacitor 10000pF 50V ceramic 2 10nF C10 C11 era Kemet C0603C103K5RACTU Capacitor ceramic 22000pF 100V 1 0 02uF C12 opao cer TDK Corporation C1608X7R2A223K 1 1000pF C2 Omit not installed JOHANSON DIELECTRICS 501R18W102KV4E 4 100kQ R11 R15 R18 R19 A TOOK EN De DES Susumu Co Ltd RGH1608 2C P 104 B 2 1 2k0 R12 R13 a Tee eNO OBUS Susumu Co Ltd RGH1608 2C P 122 B 5 10kO R8 R10 R14 R16 R17 SLM PODER VOM 07170603 Susumu Co Ltd RGH1608 2C P 103 B 4 1000 R5 R20 R21 R22 Sub TOES TION T0008 Yageo Corporation RCO603FR 07100RL
6. 8 CTRL7 No 9 CTRL8 No 10 MEAS1 Yes Warning 11 MEAS2 Yes GPIO 12 MEAS3 Yes Overlimit 13 MEAS4 Yes Critical 14 MEAS5 Yes ALT 15 MEAS6 No 16 MEAS7 No 17 MEAS8 No 18 SPI SCK No 19 SPI CS2 No 20 SPI DOUT2 No 21 SPI DIN2 No 22 Vour No Vs 23 Voc No 24 GND Yes GND 25 GND Yes GND SBOUO84 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated PGA309EVM USB 15 I TEXAS INSTRUMENTS PGA309EVM USB Hardware Setup www ti com 2 5 3 1 16 Theory of Operation for USB DAQ Platform Figure 9 shows the block diagram for the USB DAQ Platform This platform is a general purpose data acquisition system that is used on several different Texas Instruments evaluation modules The details of its operation are included in a separate document available for download at www ti com The block diagram shown in Figure 9 gives a brief overview of the platform The primary control device on the USB DAQ Platform is the TUSB3210 Voc Vout Adjustable 2 7V to 5 5V Power 2 7V to 5 5V Regulator Switching Switched Power External Power 6V5c Reference 2x 16 Bit 2x 16 Bit 3 3V Circuits Delta Sigma ADC Delta Sigma ADC Regulator 4x 16 Bit 2x 16 Bit a String DAC Delta Sigma ADC TUSB3210 5 USB Bus 8052 uC C SPI Buffers and From Computer with USB Interface Control Bits and and UART Measure Bits Calibration Reset Button EEPROM and 8Kx8 Byte Poweron Mesei EEPROM USB DAQ Platf
7. Once the user completely understands the calibration process the user can connect a real world sensor to the EVM Additionally this tab contains several sub tabs that are used to configure the PGA309 device for particular test applications This section explains each sub tab in detail 4 8 1 Sensor Definition Functions Figure 19 shows the Sensor Definition sub tab 4 PGAZ09EVM Software Ele Edt Qperate Tools Window Help e Cold Temperature v Temp Load Bridge Out Temp Load Bridge Out Temp Load Bridge Out fso aio 10 mv 422 5 aio 0 my fes clo 10 my Consider noniinearity 22 5 9s0 HIS mv Raw Data Inout 40 C4100 Sio mw 822 5 ec 100 10 mv das Cl100 910 mW Calculate Model Define temperature sensor model e Basic Temperature Diode Emulator pem Figure 19 PGA309EVM USB Software Auto Calibrate Tab Sensor Definition Use the Sensor Definition sub tab to configure the sensor emulator before starting the calibration process If you are not using the sensor emulator you can skip this tab If you are using the sensor emulator enter your sensor information in one of two different formats using the Select Data Mode option box Sensor Data Mode Sensor Characteristics Enter the sensor characteristics as they are typically given in product data sheets that is span offset drift and nonlinearity values Sensor Data Mode Raw Sensor Data Enter sensor data that has been measured at three temperatures r
8. mask work right or other TI intellectual property right relating to any combination machine or process in which TI products or services are used Information published by TI regarding third party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties conditions limitations and notices Reproduction of this information with alteration is an unfair and deceptive business practice TI is not responsible or liable for such altered documentation Information of third parties may be subject to additional restrictions Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe per
9. Block Diagram csscecceeeeeeeeee ence eeeeeeeeeeeaeeeeeeeeneeeeeeeeeeeeeeeenaeen 28 19 PGA309EVM USB Software Auto Calibrate Tab Sensor Definition eee esee esee 29 20 PGA309EVM USB Software Sensor Emulator Control Panel Tool cessere 30 21 PGA309EVM USB Software Auto Calibrate Tab PGA Setup sees 31 22 PGA309EVM USB Software Auto Calibrate Tab Two Point Calibration and Linearization 32 23 PGA309EVM USB Software Auto Calibrate Tab Temperature Error Compensation 33 24 PGA309EVM USB Software Auto Calibrate Tab Post Cal Error Check cesses 34 25 PGA309EVM USB Software Auto Calibrate Tab DMM Options eene 35 Microsoft Windows are registered trademarks of Microsoft Corporation C is a trademark of NXP Semiconductors All other trademarks are the property of their respective owners SBOUO84 February 2010 PGA309EVM USB 1 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS Introduction and Overview www ti com List of Tables 1 PGA309 Test Board Parts Lisls innin anena a E AEE EEEn 12 2 J1 Pinout 25 Pin Male DSUB 55 rre aerea noreste reat ravra rate o knees bran a xai Pv a ava cavi sra rap sepa Y ava 14 3 J2 Pinout 25 Pin Female DSUBY seitens oux oup oU uUeuCU EM DERE ER UE OERE REI ge DER EEIEURUKEENIS EAE 15 4 PGA309 Test
10. Figure 5 to see the power reference and digital connections on the PGA309 Test Board schematic T2 provides a connection for an external reference voltage JMP1 and JMP2 allow users to select between the internal reference an external reference or power supply reference JMP7 and JMP8 allows users to connect the One Wire signal to the PRG pin directly or through Voy D2 is a transient voltage suppressor It is useful in helping to prevent damage in an electrical overstress EOS condition R5 is useful in preventing EOS damage to the output C6 filters noise at the output C5 filters the reference output These components are recommended for your design if PCB space permits C4 is a decoupling capacitor it is required in the final design PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com System Setup PGA309EVM USB Input Vref wi en Connection Vsl c3 D2 100pF D C4 P6SMB6 8A gt 0 luF m i 3 qo 2 i Enmikite Vm auto gt Val 33 E 1 gt gt C15 Vexc 7 0 01u R20 100 R3 4 4 Vmi OMI c cH 5 3 3 Olu Vm2 R4 7 es A 2 TEMPn 0 01u 100 g Tempin 2x Va u UE Enubue Vanl auto Figure 4 PGA309 Test Board Schematic Input Circuitry SBOUO84 February 2010 PGA309EVM USB 7 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated System Setup 8 PGA309
11. PGA309 Test Board J1 25 Pin Male DSUB I TEXAS INSTRUMENTS www ti com Table 2 shows the different signals connected to J1 on the PGA309_Test_Board This table also identifies signals connected to pins on J1 that are not used on the PGAS309 Test Board Table 2 J1 Pinout 25 Pin Male DSUB Pin on J1 Signal Used on This EVM PGA309 Pin 1 DAC A No 2 DAC B No 3 DAC C No 4 DAC D No 5 ADS1 No 6 ADS1 No 7 ADS2 No 8 ADS2 No 9 l2C SCK No 10 l2C SDA2 No 11 ONE WIRE No 12 I2C SCK ISO Yes SCL 13 I2C SDA ISO Yes SDA 14 XTR_LOOP No 15 XTR LOOP No 16 INA No 17 Vour Yes Vs 18 Voc No 19 15v No 20 15v No 21 GND Yes GND 22 SPI SCK No 23 SPI CS1 No 24 SPI DOUT No 25 SPI DIN1 No PGA309EVM USB SBOU084 February 2010 Copyright 2010 Texas Instruments Incorporated Submit Documentation Feedback I TEXAS INSTRUMENTS www ti com 2 4 2 J2 25 Pin Female DSUB Table 3 shows the different signals connected to J2 on the PGAS309 Test Board This table also identifies signals connected to pins on J2 that are not used on PGA309 Test Board Table 3 J2 Pinout 25 Pin Female DSUB System Setup Pin on J2 Signal Used on This EVM PGA309 Pin 1 NC No 2 CTRL1 Yes Convert 3 CTRL2 Yes GPIO 4 CTRL3 No 5 CTRL4 No 6 CTRL5 No 7 CTRL6 No
12. R8 convert the output voltage from the PGA309 to an input current for the XTR117 R7 can be used to create an input offset current using the reference The total input current is lin Vou R6 R8 Vgge R7 The output current is equal to the input current times the current gain x 100 D4 is used for reverse polarity protection D3 is used for over voltage transient protection D3 was selected for low leakage Leakage on D3 directly contributes to error C11 is a decoupling capacitor and is required for proper operation The external transistor Q1 conducts the majority of the full scale output current Power dissipation in this transistor can approach 0 8W with high loop voltage 40V and 20mA output current SBOUO84 February 2010 PGA309EVM USB 9 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS System Setup www ti com 10 Figure 7 shows the sensor emulator circuit The sensor emulator generates signals to help users evaluate the PGA309 No part of this circuit is required in your final design The sensor emulator uses a DAC8555 U8 to generate an emulated temperature signal common mode signal and differential signal These signals can be controlled using software to produce levels that closely match real world sensors Input Amp Sensor Emulator RA Y XV I bi Figure 7 PGA309 Test Board Schematic Sensor Emulator Circuitry The operational amplifier U4 an
13. function on other Windows operating systems Please report any OS compatibility issues to precisionamps list ti com 42 PGA309EVM USB Software Install Follow these steps to install the PGA309EVM USB software Step 1 Software can be downloaded from the PGA309EVM USB web page or from the disk included with the PGA309EVM USB which contains a folder called nstall software Step 2 Find the file called setup exe Double click the file to start the installation process Step 3 Follow the on screen prompts to install the software Step 4 To remove the application use the Windows Control Panel utility Add Remove Software 43 Starting the PGA309EVM USB Software The PGA309EVM USB software can be operated through the Windows Start menu From Start select All Programs then select the PGA309EVM USB program Refer to Figure 16 for a screenshot of how the software should appear if the EVM is functioning properly 44 Using the PGA309EVM USB Software The PGA309EVM USB software has five different primary tabs that allow users to access different features of the PGA309 itself Each tab is designed to provide an intuitive graphical interface that will help users to gain a better understanding of the device SBOUO84 February 2010 PGA309EVM USB 25 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated i TEXAS INSTRUMENTS PGA309EVM USB Software Overview www ti com 4 5 Registers Tab Figure 16 illustrates the Registers tab 3
14. 5 px O9EVM Software Ele Edt Operate Tools Window Help g addr i N Figure 16 PGA309EVM USB Software Registers Tab This tab presents a Register Table that shows a summary of the PGA309 device registers You can select and toggle various sections of the table by clicking on the table with your mouse For example when a row is selected it will be highlighted in blue in the table The 16 individual bits in the selected register are displayed below the register table Note that each bit has descriptive text above the bit that identifies or defines the function of that bit You can edit the bit value by using the up 1 or down arrow to the left of the bit Any changes made to the bit are displayed in the table Additionally changes to the device registers initiated on other tabs in the software will also update the Registers tab 26 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Software Overview 4 6 EEPROM Table Tab The EEPROM Table tab is shown in Figure 17 1 Address Upper Byte Lower Byte Description SS mm ET oemp lt TO 19 16 i4 3 20 Zerodac Temp TO 2 20 cs s amp GoGendac Temo TO o n 9J 23 22 8 25 24 ES zm 27 26 cB GM 29 28 2B T2 3 30 1 i5 99 39 38 3 40 143 42
15. Board Jumper Functions General esesseeseeeessssesen ense nennen 22 5 PGA309 Test Board Jumper Functions Miscellaneous Connections eesueeeeeeeeeeeeeeeee 23 6 PGA309 Test Board Jumper Functions Sensor Emulator Section 20ceeeeee eee ee eee eeeeeeeeeeeeeeeeeee 23 7 USB DAQ Platform Jumper Settings cernunt ele enne ra ntt De cc irren E 24 2 Introduction and Overview This document provides the information needed to set up and operate the PGA309EVM USB evaluation module a test platform for the PGA309 programmable sensor conditioner For a more detailed description of the PGA309 refer to the product data sheet SBOS292 available from the Texas Instruments web site at http www ti com Additional support documents are listed in the section of this guide entitled Related Documentation from Texas Instruments The PGA309EVM USB is an evaluation module that is used to fully evaluate the PGA309 The PGA309 is an integrated circuit that provides temperature compensation and linearization for bridge sensors The PGA309EVM USB consists of two PCBs One board the USB DAQ Platform generates the digital signals required to communicate with the PGA309 The other board the PGAS309 Test Board contains the PGA309 device as well as support and configuration circuitry Throughout this document the abbreviation EVM and the term evaluation module are synonymous with the PGA309EVM USB PGA309EVM U
16. For current loop modules set this jumper to the Vout to XTR position 22 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Hardware Setup Table 5 describes the function of the jumpers in the Miscellaneous connections section of the PGA309 Test Board Table 5 PGA309_Test_Board Jumper Functions Miscellaneous Connections Jumper Default Purpose JMP1 JMP2 NC For JMP1 NC JMP2 Vaer EXT The REF pin on the PGA309 is configured for internal reference In this mode JMP2 is not connected so its position does not matter Vrer EXT For JMP1 Vage JMP2 Vs The REF pin is configured for external reference and is connected to Vs For JMP1 Veer and JMP2 Vper EXT The REF pin is configured for external reference and is connected to T2 terminal for external reference connection JMP3 ADS1 For JMP3 ADS7 it connects the analog to digital converter ADC on the USB DAQ Platform to the output of the PGA309 The ADC on the USB DAQ Platform allows full measurement and calibration of the PGA309 without any additional instruments For JMP3 NC the ADC on the USB DAQ Platform is not connected to the PGA309 This mode is useful if you want to use an external DMM in place of the USB DAQ ADC JMP7 JMP8 NC For JMP7 NC and JMP8 One to PRG In this mode the one wire signal from the USB DAQ Pla
17. IJ TEXAS User s Guide INSTRUMENTS SBOUO84 February 2010 PGA309EVM USB This user s guide describes the characteristics operation and use of the PGA309EVM USB evaluation module EVM This EVM is designed to evaluate the performance of the PGA309 a voltage output programmable sensor conditioner This document covers all pertinent areas involved to properly use this EVM board allowing for user evaluation suitable to a variety of applications This document also includes the physical printed circuit board PCB layout and circuit descriptions A schematic of the PGA309EVM USB is available as a separate download from the TI web site Contents 1 Introduction and OVerVIBW seison E Gen ei tma aa ir ir lei scias mri e Nis maa 2 2 System Sels veces IT wanda denon EEEE E OEE ESN 5 3 PGASOSEVM USB Hardware Setup zzustsssxxedes cesses unoc ote Dex ensues EE AAEE E E EEEE DRE NDA ERN ENS 16 4 PGA309EVM USB Software Overview ssssssselelsslllle nens nenne hn nn ntemstr enne 25 List of Figures 1 Hardware Included with the INA282 286EVM sssuuuessellllllllll I n nnn n e n nnn nn nn nnn nn nnne d 2 PGAS309EVM USB Hardware Setup un rer titre nonni nnnm ent menie mene agite e aru ipn A tien me a mama euismo nm inn 5 3 PGASO9S Test Board Block Diagram 5 snos norant inni ro hti ro tuin renisino ra n SV amt a a a raa ERR Eaa 5 4 PGA309 Test Board Schematic Input Circuitry
18. L eeeseeseeeseseeeenenen nm m nennen ri 5 PGA309 Test Board Schematic Power Reference and Digital Connections suuuusuuuuuu 8 6 PGA309 Test Board Schematic Output Circuitry 0 ce eeee cece ee eee eee ee eee eee eee neat nm nnne nenne 9 7 PGA309_Test_Board Schematic Sensor Emulator CirCuitry 0 eeeeee cece eeeee cece ence eeeeeeeeeeeeeeeeeee 10 8 PGA309_Test_Board Connections to USB DAQ Platform and EEPROM cccsssceeeeeeeceeeeeeeeseeeeees 11 9 Theory of Operation For USB DAQ PlatfOrmi eer eere rir eren tnter tme nin tument nitmn ne nine mne nine R nita 16 10 PGA309EVM USB Typical Hardware Connections eeeeeeeeeeeeseeene nnnm mme 17 11 Connecting the TWo EVM PGBS tissctessiccateteat ae erre aeaa O EO E Ed ExF Eram tam Rm EE ETE u NEA 18 12 Connecting Powerto the EVM dio ioaei eene etn n mu nuarmin xime news co cr ec n mennxc Dude Ee EcRru Eaa 19 13 Connecting the USB Cables cuum esie deo E Ian cU NEUE FUnEnEUU Ka M UNE E NUEUEE 20 14 Default Jumper Settings PGA309_Test_Board cceeceeee eee eee eee eee e eee ee eee eee n IH nennen 21 15 Default Jumper Settings USB DAQ Platform eceeeeeee cece cece enna tees eee n nen I In n Ie n nn nen 22 16 PGA309EVM USB Software Registers Tab eeseesseessesseeeen ne en enne emen nnn 26 17 PGAS309EVM USB Software EEPROM Tab 20 eceee cece cee ee eee e eee cee eee eee eee e mn nemen 27 18 PGA309EVM USB Software
19. Lmin 22 50 0 0000 4 Tmid Lmax 22 50 1000 0000 5 Tmax Lmin 85 00 0 0000 6 Tmax Lmax 85 00 1000 0000 Temp simulation values Temperature C Bridge m jV r 1 Tmin Lmin 40 00 0 8793 2 Tmin Lmax 40 00 5 9216 3 Tmid Lmin d 0 9990 4 Tred Lmax 1 5 9653 5 Tmax Lmin 85 00 0 7358 6iTmax Lmax Enter applied temperature and sensor load for every Cus step teen Total capture points count 6 Simulation value select m2 ous s Set simulator values only 2 1 ee Set selected simulator values T Bridge alculate Sensor Output 2 0 mv 7 and Number of LUT Entries 17 inland ial applied load 2 0 LUT Step 3 Generate a Report for Sensor module Report File Name and Path aetna it et Step 2 Choose Table Length and generate the LUT Temperature 2 0 c Figure 23 PGA309EVM USB Software Auto Calibrate Tab Temperature Error Compensation The Temperature Error Compensation sub tab is divided into six separate measurements refer to Figure 23 When using the sensor emulator option you can complete the calibration by pressing the Read button six times Each time the Read button is pressed the sensor emulator adjusts the temperature signal and the bridge signal automatically to correspond to the temperature and load required For real world sensors however the EVM must be physically placed in an environmental chamber the user must then adjust the temp
20. RTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES TI currently deals with a variety of customers for products and therefore our arrangement with the user is not exclusive TI assumes no liability for applications assistance customer product design software performance or infringement of patents or services described herein Please read the User s Guide and specifically the Warnings and Restrictions notice in the User s Guide prior to handling the product This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products or services might be or are used FCC Warning This evaluation board kit is intended for use for ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use It generates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other environments
21. SB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com Introduction and Overview 1 1 PGA309EVM USB Hardware Figure 1 shows the hardware included with the PGA309EVM USB kit Contact the factory if any component is missing It is highly recommended that you check the TI web site at http www ti com to verify that you have the latest software It is also recommended that you refer to the PGA309 User s Guide if you have questions about the PGA309 device itself The complete kit includes the following items PGA309_Test_Board USB DAQ Platform Board USB cable e 6V wall power supply unit CD ROM oontaining this user s guide and product software 6V Wall Power Supply Unit USB Cable Ls D v 3373 e LN ET USB DAQ Platform Board PGAS309 Test Board Figure 1 Hardware Included with the INA282 286EVM SBOUO84 February 2010 PGA309EVM USB 3 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS Introduction and Overview www ti com 1 2 1 3 1 4 4 Related Documentation from Texas Instruments The following documents provides information regarding Texas Instruments integrated circuits used in the assembly of the PGA309EVM USB This user s guide is available from the TI web site under literature number SBOU084 Any letter appended to the literature number co
22. T uC OK 3 3V and Vec LEDs all illuminate Figure 12 Connecting Power to the EVM SBOUO84 February 2010 PGA309EVM USB 19 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS PGA309EVM USB Hardware Setup www ti com 3 5 Connecting the USB Cable to the PGA309EVM USB Figure 13 shows the typical response to connecting the USB DAQ Platform to a PC USB port for the first time Note that the EVM must be powered on before connecting the USB cable Typically the computer will respond with a Found New Hardware USB Device pop up The pop up typically changes to Found New Hardware USB Human Interface Device This pop up indicates that the device is ready to be used The USB DAQ platform uses the Human Interface Device Drivers that are part of the Microsoft Windows operating system In some cases the Windows Add Hardware Wizard will pop up If this prompt occurs allow the system device manager to install the Human Interface Drivers by clicking Yes when requested to install drivers unum ee es EY 6 The first time a USB DAQ board is connected to the PC you may get a message similar to those shown here Figure 13 Connecting the USB Cable 20 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com 3 6 PGA309EVM USB Jumper Settings Figure 14 illustrates th
23. Table 1 PGA309 Test Board Parts List continued Qty Value Ref Des Description Vendor Part Number JMP1 JMP2 JMP3 JMP4 JMP5 JMP6 JMP7 JMP8 A a 17 SEMEA ur JMP9 JMP10 JMP11 S EAD panten 100 Samtec TSW 103 07 G S JMP12 JMP13 JMP14 pes deere JMP15 JMP16 JMP17 V_Sensor OPA_O1 C1 B1 A 1 Templn GND1 D1 GND2 V Vi xis TP Cut to X MEAS REE Terminal strip 1 position 100 24 Vour F1 Vin2 PRG1 d Samtec TSW 101 07 G S Size Vouri Vert Vel SCL centers 025 square pins Vgy1 GND4 Vint SDA1 GND3 Test1 JMP1 JMP2 JMP3 JMP4 JMP5 JMP6 JMP7 JMP8 m 17 pud JMP9 JMP10 JMP11 Shunt LP wiHandle 2 position Tyco Electronics Amp 881545 2 JMP12 JMP13 JMP14 JMP15 JMP16 JMP17 Connector D SUB PLUG R A 1 DSUB25M J1 25POS 30GOLD with Threaded AMP Tyco Electronics 5747842 4 Inserts and Board locks Connector D SUB RCPT R A 1 DSUB25F J2 25POS 30GOLD with Threaded AMP Tyco Electronics 5747846 4 Inserts and Board locks Standoffs Hex 4 40 Threaded 4 Standoffs 0 500 length 0 250 OD Keystone 2203 Aluminum lridite Finish 4 Screws Machina Screw 4 40x9 8 HS Building Fasteners PMS 440 0038 PH PanHead Steel Zinc Plated SBOUO84 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated PGA309EVM USB 13 System Setup 2 44 PGA309_Test_Board Signal Definitions and Pinouts 2 4 1 14 This section provides the signal definitions for the
24. UMP5 L L This jumper sets the address for the USB board The only reason to change from the default is if multiple boards are being used JUMP9 5V This jumper selects the voltage of the device under test supply Vpur 5V or 3V JUMP10 WP ON This jumper write protects the firmware EEPROM JUMP11 WP ON This jumper write protects the calibration EEPROM JUMP13 Reg This jumper configures the regulator output to generate the Vpur supply The USB bus can be used as the Vpur supply JUMP14 9V This jumper configures the external power 9V as apposed to the bus JUMP17 BUS While in the BUS position Vpy operation is normal While in the Vnaw position the Vpyr supply is connected to an external source This allows for any value of Vpy between 3V and 5V JUMP18 Vout Connects the pull up resistor on GPIO to the V5 supply or the Voc supply CAUTION Adjusting the value of Vpy beyond the range of 3V to 5V will damage the EVM 24 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Software Overview 4 PGA309EVM USB Software Overview This section discusses how to install and use the PGA309EVM USB software 4 1 Operating Systems for PGA309 Software The PGA309EVM USB software has been tested on the Microsoft Windows XP operating system OS with United States and European regional settings The software should also
25. USB DAQ Platform generates the digital signals used to communicate with the PGA309 Test Board Connectors on the PGA309_Test_Board allow for connection to the bridge sensor Se LISS ToS SESS T TT CEU DL 7 Mp USBDAQ PGAS309 Platform L Test Board Figure 2 PGA309EVM USB Hardware Setup 2 1 Theory of Operation for PGA309 Test Board Hardware Figure 3 shows the block diagram of the PGA309 Test Board The PGA309 Test Board provides connections to the IC one wire analog to digital converters ADCs and digital to analog converters DACs on the USB DAQ Platform It also provides connection points for external connection of the bridge sensor The PGA309 Test Board has circuitry to convert the PGA309 voltage output to 4mA to 20mA current a 4mA to 20mA Vpur Supply IV Converter 25 Pin Switched 5 0V Power Male DSUB Signals From USB DAQ Platform 2 Ed Ic Emulator Interface One Wire Interface PGA309 25 Pin Female DSUB Signals From USB DAQ Platform Sensor Connection Figure 3 PGA309 Test Board Block Diagram SBOUO84 February 2010 PGA309EVM USB 5 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS System Setup www ti com 2 2 6 The PGA309_Test_Board also has an onboard sensor emulator The sensor emulator is a circuit that generates the same type of signals generated by a bridge sensor The sensor emulator circuit is co
26. alibration with the sensor emulator press the buttons labeled Step 1 through Step 6 respectively The sensor emulator automatically adjusts the simulated load according to what is required for each step To perform the calibration using a real world sensor you must adjust the load applied to the sensor before pressing each button For example adjust the load that is decrease the pressure to the minimum level before pressing the Step 1 button The software will take readings and adjust the gain and offset in order to obtain the desired output swing 32 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Software Overview 4 8 4 Temperature Error Compensation Functions Figure 23 shows the Temperature Error Compensation sub tab 3 PGA309EVM Software Registers EEPROM Table Block Diagram Auto Calbrate internal Sensor definibon PGA setup Two point calibration and linearisabion Temperature error compensation Post Cal Error Check DYM Options Step 1 Appy temperature and sensor load then press Read Do this for each calibration point Simulator Control Get simulation values From sensor definition Reference Value Entry Captured Values Next capture Number Temperature Losd abs Temp ADC Outpt Di o all captured 1 Tmin Lmin 40 00 0 0000 2 Tmin Lmax 40 00 1000 0000 3 Tmid
27. ccessed from the Sensor Definition sub tab It displays three graphs that show the operation of the emulated sensor under different pressures and at different temperatures The two sliders below the graphs adjust the operating point of the sensor emulator When you adjust the sliders the cursors on the graph move accordingly to the new operating point The sensor output in mV V is displayed to the right of the sliders You can test your calibration at any temperature and pressure using this tool 30 PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Software Overview 4 8 2 PGA Setup Functions Figure 21 illustrates the PGA Setup sub tab YY PGA309EVM Software Step 1 PGA Connections 5 Step 3 Sensor Model UE e testem ecco dae r upper temperature limk 85 PRG to Vout Temperature sensing SENSE_RT i 3 Access Mode MODE_4_WIRE x 3 Sensor temperature model lower temperature limt 40 C Step 5 Calibration Measure Points Basic PGA309 settings Load set x f used ices for calibration in steps 1 to 6 Temperature Set Points 4 096 PGA309 Vref z j lo p n End 3 3997 PGA309 Vexc 50 Load at middle in 22 5 Tmid 100 Load at maximum in 85 Tmax Figure 21 PGA309EVM USB Software Auto Calibrate Tab PGA Setup The PGA Setup sub tab is divided into six sections Each section is identi
28. d associated resistors is a differential amplifier with jumper selectable attenuation The possible attenuations are 0 12 and 0 012 The attenuation produces a more accurate and stable emulated sensor output For example when the DAC outputs 3V the sensor emulator outputs 3V x 0 012 36mV assuming that attenuation is set in the 0 012 position Thus the maximum output of the sensor emulator is 120mV V and 12mV V The op amp U6 buffers the emulated temperature signal Resistors R16 R17 R18 and R19 are used to attenuate the DAC output for temperature emulation and to reference the temperature signal to supply or ground JMP13 allows the resistor network to be bypassed for direct connection to the DAC diode temperature sensor mode PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com System Setup Figure 8 illustrates the two 25 pin D SUB connectors J1 and J2 These connectors provide all the signals necessary to communicate with the PGA309 U5 is the EEPROM used to store the calibration look up table used with the PGA309 HI Mak p LM DAC A gt DAC B ala Wr r Uu V 9 DC SCK_ 10 ll ll 12 DC SDA ISO 12 13 13 sees 15 XIR Loop gt 15 16 NA 5 16 17 Vdut 17 18 Vec 18 MLCIGBE 1 HSY 1 PI Ceo 20 LIL laus 20 SPI DOUT 21 21 3 2 2 23 23 SPI DOUTI M L2 24 25 SPI DINI 25
29. e default jumpers configuration for PGA309EVM USB Hardware Setup the PGA309_Test_Board In general the jumper settings of the USB DAQ Platform do not need to be changed You may want to change some of the jumpers on the PGA309_Test_Board to match your specific sensor conditioning design 6 e ken e c6 Z J 5 5 Ho Ex i bl 3 Fe i vct 89 m nur s Bes me t2 8 Jt DP a s e Wot Ext Us L d 43 Legal e ti eee 795 9 32945439 999929 99094994 T 9 v970247 4 Sw nu wo ps os Setceeeesaeseaca ma qe d a ai TITITETEELTT EP ws a eeeeeeerecead f con BR SS mu eeeceoecesaeacas e EDs E3 ul gt eoreerererees vc a Seeeecesesees 4 B m e ssesessesass oo EEG T8 f a GNO Pad jt r Eg Lr EJ gs ISG P2 mn LI A e 59 c LB x p T s ae ga t Izin aie E a One EID 6 BS gej Ys OE si usd Mz e e e e a fe wae A o ay 2 rw e Pp s e S e e Gi i or t lel LM ri oC Ej e E3 e lej a Bene deg me e s Leve ae de F e M e 9 55 9 E e e t i gt T3 E va F a5 OU an pz e g Soa den n ec v T LORTE lo y z e e j s IU 4 5 S35 1105 7 e 3 oe Wem CPE BS v wes gogo t o cio vU ir E J72 m T T9 T1 pPoea0S Test Board Lr tee GDL i V Vests eve its em on emu lt ec4aie Rz RFJ B e Di be je G 2 z S cys UAL M LJ m gt E Fi
30. erature and applied load as required by the table When all six measurements are completed press the Calculate and download LUT button to update the EEPROM look up table LUT After pressing the Calculate and download LUT button the module is calibrated and should output the desired voltage according to the specified load and temperature SBOUO84 February 2010 PGA309EVM USB 33 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated 13 TEXAS INSTRUMENTS PGA309EVM USB Software Overview www ti com 4 8 5 Post Cal Error Check The Post Cal Error Check sub tab is illustrated in Figure 24 4 PGA309EVM Software O gt lt aaa ems Sensor definition PGA setup Two point calibration and inearisation Temperature error compensation Post Calibration Simulation Settings Post Calbrations Results Temperature C Bridae m Y Temperature C Load Ideal Result V Measured Result V Error_ of Span 0 879320 T x l j 2 453131 5 921600 0 998976 0 689873 2 413544 4 172036 5 965350 0 735820 2 354816 5 571600 r Figure 24 PGA309EVM USB Software Auto Calibrate Tab Post Cal Error Check This sub tab is used to test post calibration accuracy This feature only works for the sensor emulator mode Press the Read Post Calibration Results button and the softwa
31. fied as a sequential step Step 1 PGA309 Hardware Connections Step 2 PGA309 Initial Register Settings Step 3 Sensor Model temperature sensor connection temperature range Step 4 Calibration Range output voltage or current range Step 5 Calibration Measure Points temperature and nonlinearity Step 6 Step 6 confirms the previous entries and configures the DUT settings The last procedure in the setup process is to save the settings from this tab If you have already made a sensor setup file you can skip Steps 1 to 6 and simply load the file select the Load Sensor Setup button at the lower right hand side of the window SBOUO084 February 2010 PGA309EVM USB 31 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS PGA309EVM USB Software Overview www ti com 4 8 3 Two Point Calibration and Linearization Functions The Two Point Calibration and Linearization sub tab is illustrated in Figure 22 4 PGA309EVM Software file Edt Operate Tools Window Help e Simulator Control Set simulator only Bridge Simulator settings Sim max 5 96535 mvj nal e rns Gain and Offset Adjust Rep2 5tep3 Adjust gain at max Adjust fine gain and offset at min Linearisation Steps Read at max and calc linearisation Figure 22 PGA309EVM USB Software Auto Calibrate Tab Two Point Calibration and Linearization This sub tab performs the room temperature calibration To perform this c
32. gure 14 Default Jumper Settings SBOUO84 February 2010 Submit Documentation Feedback PGA309 Test Board PGA309EVM USB 21 Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS PGA309EVM USB Hardware Setup www ti com Figure 15 shows the default jumpers configuration for the USB DAQ Platform In general the jumper settings of the USB DAQ Platform do not need to be changed 4mA to 20mA Power Current Loop Only 54 i 0 NN aV M gos SN m Bart Paes Wall Power Supply oS i DIIIIIIIIIIIT 2 EILXIIIIIIXIII DIIIILIIIIIIII Cable Figure 15 Default Jumper Settings USB DAQ Platform Table 4 explains the function of the jumpers on the PGA309 Test Board Table 4 PGA309 Test Board Jumper Functions General Jumper Default Purpose JMP10 NC This jumper is used to connect the current loop output XTR117 For voltage output modules set this jumper to the NC no connect position For current loop modules set this jumper to the Vref PGA position JMP11 Vpur power This jumper is used to connect the current loop output XTR117 For voltage output modules set this jumper to the Vdut Power 5V connected to power position For current loop modules set this jumper to the Loop Power power to loop supply position JMP9 NC This jumper connects the Voy pin on the PGA309 to the XTR117 input For voltage output modules set this jumper to the NC no connect position
33. may cause interference with radio communications in which case the user at his own expense will be required to take whatever measures may be required to correct this interference EVM Warnings and Restrictions It is important to operate this EVM within the input voltage range of 5 7V to 9V and the output voltage range of OV to 5V Exceeding the specified input range may cause unexpected operation and or irreversible damage to the EVM If there are questions concerning the input range please contact a TI field representative prior to connecting the input power Applying loads outside of the specified output range may result in unintended operation and or possible permanent damage to the EVM Please consult the EVM User s Guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 50 C The EVM is designed to operate properly with certain components above 125 C as long as the input and output ranges are maintained These components include but are not limited to linear regulators switching transistors pass transistors and current sense resistors These types of devices can be identified using the EVM schematic located in the EVM User s Guide When placing measurement probes near these devices during operation please be aware that these devices may be very warm to the to
34. ntrolled by the PGA309EVM USB software Using the sensor emulator allows you to get a deeper understanding of the PGA309EVM USB software and hardware more quickly When the capabilities and functions of the PGA309EVM USB are fully understood you can connect the real world sensor to the EVM and perform a full calibration Note that calibrations with real world sensors are time consuming because devices such as these are normally calibrated at multiple temperatures in an environmental chamber It is not unusual for temperature calibration to require 12 hours PGAS309 Test Board Connections See Figure 4 for the input connections on the PGA309 Test Board schematic T1 provides the power connection for an external bridge sensor T4 allows connections to each input of the external bridge sensor T5 allows connection of the external temperature sensor JMP7 JMP4 JMP5 and JMP6 allow users to select either the onboard sensor emulator or an external sensor JMP12 allows users to choose between Vs or Vexc for the sensor power The input is filtered with R3 R4 C14 C15 and C16 Note that C14 is ten times larger then C15 and C16 is used for good ac common mode rejection The cutoff frequency of this filter is 40 6Hz f 1 2 n R8 C14 This input filter is recommended in your final design if you have available board space Vexc has a 100pF capacitor and TEMPin has a 1nF capacitor These components are also recommended in your final design Refer to
35. observe good engineering practice standards As such the goods being provided are not intended to be complete in terms of required design marketing and or manufacturing related protective considerations including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards This evaluation board kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility restricted substances RoHS recycling WEEE FCC CE or UL and therefore may not meet the technical requirements of these directives or other related directives Should this evaluation board kit not meet the specifications indicated in the User s Guide the board kit may be returned within 30 days from the date of delivery for a full refund THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE The user assumes all responsibility and liability for proper and safe handling of the goods Further the user indemnifies TI from all claims arising from the handling or use of the goods Due to the open construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PA
36. oom or ambient hot and cold SBOUO084 February 2010 PGA309EVM USB 29 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS PGA309EVM USB Software Overview www ti com Select the type of temperature sensor that you want to emulate using the Define Temperature Sensor Model control Depending on the type of temperature sensor selected you may need to provide some additional information about the sensor for example R resistance Bridge Resistance and drift You may also need to set the sensor emulator range The sensor emulator has two jumper selected ranges 10mV V and 100mV V The software must be set to match the jumper setting Observe the sensor emulator graphs using the Open Sensor Emulator Control Panel button Figure 20 shows the sensor emulator control tool Sensor Emulator Control Tool Sensor Emulator Control Tool Sensor Out vs Load at given Temperature Sensor Offset and Full Scale Span over Temperature Temperature Sensor Output 8 7 6 M 4 3 i 1 0 1 2 d amp Temperature in C Load as 0 Bridge Vexc input 9 Y Bridge Sensor Senstivty 0 998976 mvjv Bridge Sensor Output 0 mv Temp Sensor Output 0 575 y Limit Test 9 ok EVM Bridge Range Out Ideal 0 5 V OutMeas 0 mw xd Close Figure 20 PGA309EVM USB Software Sensor Emulator Control Panel Tool The Sensor Emulator Control Tool is a pop up window that can be a
37. orm External Power Vioop 40Vpc Loop Switching 4mA to 20mA 4mA to 20mA Loop Measurement Circuit Loop Receiver Receiver Circuitry 15V Figure 9 Theory of Operation For USB DAQ Platform pieog S L OL To PC and Power Supplies PGA309EVM USB Hardware Setup The PGA309EVM USB Hardware setup involves connecting the two halves of the EVM together applying power connecting the USB cable and setting the jumpers This section covers the details of this procedure Electrostatic Discharge Warning Many of the components on the PBA309EVM USB are susceptible to damage by electrostatic discharge ESD Customers are advised to observe proper ESD handling precautions when unpacking and handling the EVM including the use of a grounded wrist strap at an approved ESD workstation CAUTION Failure to observe ESD handling procedures may result in damage to EVM components PGA309EVM USB SBOU084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Hardware Setup 3 2 Typical Hardware Connections To set up the PGA309EVM USB hardware connect the two halves of the EVM together apply power and then connect the external sensor Figure 10 shows the typical hardware connections Wall Power Supply 4mA to 20mA Power Current Loop Only S CR BEWI 2 a n n o E LIMMMM i te PEDE a x ed
38. r the sensor emulator only its position is not important for externally connected real world sensors JMP13 Diode JMP16 AT In this position the temperature sensor emulation is set for diode type temperature sensor When JMP13 Diode the position of JMP16 does not matter JMP13 AT JMP16 AT In this position the temperature sensor emulation is set for RT JMP13 RT JMP16 HT In this position the temperature sensor emulation is set for RT SBOUO84 February 2010 PGA309EVM USB 23 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS PGA309EVM USB Hardware Setup www ti com Table 7 explains the function of the USB DAQ Platform jumpers For most applications the default jumper position should be used A separate document gives details regarding the operation and design of the USB DAQ Platform Table 7 USB DAQ Platform Jumper Settings Jumper Default Purpose JUMP1 EXT This jumper selects external power or bus power External power is applied on J5 or T3 9V dc Bus power is 5V from the USB bus External power is typically used because the USB bus power is noisy JUMP2 EXT Same as JUMP1 JUMP3 EE ON This jumper determines where the PGA309 gets its power supply In the Vpyr position the EVM provides power The default is the V5 position In the Vs e position the power is connected externally 7 JUMP4 J
39. re automatically adjusts the sensor emulator to read the output over the calibration range Typical error is less than 0 1 34 PGA309EVM USB SBOU084 February 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com PGA309EVM USB Software Overview 4 8 6 DMM Options Figure 25 shows the DMM Options sub tab 49 PGA309EVM Software Ele Edt Operate Tools Window Hep e Figure 25 PGA309EVM USB Software Auto Calibrate Tab DMM Options It is possible to use an external digital multimeter or DMM to calibrate sensor modules The current version of the PGA309EBM USB software provides the capability for the Agilent 34401A DMM combined with a National Instruments GPIB USB HS To change the external DMM settings select the Measuring Mode button and choose the desired measurement tool Then select the DVM Connection VISA name to choose the IEEE488 address SBOUO084 February 2010 PGA309EVM USB 35 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated Evaluation Board Kit Important Notice Texas Instruments TI provides the enclosed product s under the following conditions This evaluation board kit is intended for use for ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use Persons handling the product s must have electronics training and
40. rresponds to the document revision that is current at the time of the writing of this document Newer revisions may be available from the TI web site at http www ti com or call the Texas Instruments Literature Response Center at 800 477 8924 or the Product Information Center at 972 644 5580 When ordering identify the document by both title and literature number Document Literature Number PGA309 SBOS292 USB DAQ Platform Users Guide SBOUO56 PGA309 Users Guide SBOU024 OPA333 Product Data Sheet SBOS351 DAC8555 Product Data Sheet SLAS475 XTR117 Product Data Sheet SBOS344 PGA309EVM USB Schematic SBORO 10 Sensor Emulator EVM Reference Guide SBOA102 If You Need Assistance If you have questions about the PGA309EVM USB evaluation module send an e mail to the Linear Application Team at precisionamps list ti com Include PGA309EVM USB as the subject heading Information About Cautions and Warnings This document contains caution statements CAUTION This is an example of a caution statement A caution statement describes a situation that could potentially damage your software or equipment PGA309EVM USB SBOUO084 February 2010 Submit Documentation Feedback Copyright O 2010 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com System Setup 2 System Setup Figure 2 shows the system setup for the PGA309EVM The PC runs software that communicates with the USB DAQ Platform The
41. sonal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications and acknowledge and agree that they are solely responsible for all legal regulatory and safety related requirements concerning their products and any use of TI products in such safety critical applications notwithstanding any applications related information or support that may be provided by TI Further Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety critical applications TI products are neither designed nor intended for use in military aerospace applications or environments unless the TI products are specifically designated by TI as military grade or enhanced plastic Only products designated by TI as military grade meet military specifications Buyers acknowledge and agree that any such use of TI products which TI has not designated as military grade is solely at the Buyer s risk and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO TS 16949 requirements Buyers acknowledge and agree that if they use an
42. tform is connected directly to the PRG pin on the PGA309 This mode is commonly called Four wire mode because only four connections are required Power GND Vout and PRG One to PRG For JMP7 Voy to PRG and JMP8 One to Voy In this mode the one wire signal from the USB DAQ Platform is connected to the Voy PRG pin on the PGA309 This mode is commonly called Three wire mode because only three connections are required Power GND and Voy PRG Table 6 explains the function of the jumpers in the sensor emulator section connections section of the PGA309 Test Board Table 6 PGA309 Test Board Jumper Functions Sensor Emulator Section Jumper Default Purpose JMP12 Vexc This jumper selects Vs or Vgyc as the reference for the sensor emulator Using Vs as the reference is commonly called ratiometric mode JMP17 JMP4 JMP5 JMP6 Emulate These jumpers select the sensor emulator when in the Emulate position When the jumper is in the EXT position it selects the external sensor JMP14 JMP15 10mV These jumpers select the range of the sensor emulator This jumper is used for the sensor emulator only its position is not important for externally connected real world sensors 10m maximum emulator output is 10mV V 100m maximum emulator output is 100mV V JMP13 JMP16 RT Diode This jumper selects the type of temperature sensor you will emulate on the EVM This jumper is used fo
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Texas Instruments PGA309EVM-USB User's Manual

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