Texas Instruments TAS5121 User's Manual
Contents
1. uses and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other environments 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 Trademarks Equibit PowerPAD and PurePath Digital are trademarks of Texas Instruments Contents eJ c 1 1 1 1 TAS5508 5121K8EVM Features sssesssssesess nnn 1 2 1 2 PCBKeyMap 2 cece ccc hh nh hh nn 1 3 System Interfaces iia aa xx E ERG Un e Ro MERE RA AR MERGER vase 2 1 2 1 Power Supply PSU Interface J70 J71 and J73 0 ee 2 2 2 1 4 PSU Control Interface J72 2 eens 2 3 2 2 Loudspeaker Connectors J100 J800 1 2 eee 2 4 2 3 Line Out Connectors J950 and J951 1 tee 2 4 2 4 Headphone Connector J900 eens 2 5 2 5 Line Output Select 50 0 26 n nnn 2 5 2 6 Headphone Select 32 ariii diaii aone nn 2 5 2 7 Control Interface J30 ione besser esee id 2 6 2 8 Digital Audio Interface J40 00 ee IH 2 7 Protection creier A same sale eri 3 1 3 1 Short Circuit Protection and Fault Reporting Circuitry 0c eee ee eee 3 2 3 2 Devi2. Allocation s csuri smugi s muida aa airina nn hh 3 3 TAS5121 Warning Error Signal Decoding oocococococcnccnnn nennen 3 3 Chapter 1 Overview The TAS5508 5121K8EVM PurePath Digital customer evaluation amplifier module demonstrates two audio integrated circuits TAS5508B and TAS5121 from Texas Instruments TI The TAS5508BPAG is a high performance 32 bit 24 bit input multichannel PurePath Digital pulse width modulator PWM based on Equibit technology with a new fully symmetrical AD modulation scheme It accepts an input sample rate from 32 kHz to 192 kHz The device also has digital audio processing DAP that provides 48 bit signal processing advanced performance and a high level of system integration The device has interfaces for headphone output and power supply volume control PSVC The TAS5121DKD is a compact high power digital amplifier power stage designed to drive a 4 O loudspeaker up to 100 W 10 THD N The TAS5121DKD contains integrated gate drivers four matched and electrically isolated enhancement mode N channel power DMOS transistors and protection fault reporting circuitry The DKD package has a PowerPAD on the top side for heat transfer through a heatsink The heatsink in this design is for evaluation purpose only This EVM together with a TI input board is a complete 8 channel digital audio amplifier system which includes digital input S PDIF analog inputs interface to PC and DAP fe
3. in the User s Guide prior to handling the product This notice contains important safety information about temperatures and voltages For additional information on Tl 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 lt 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 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 Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright O 2006 Texas Instruments Incorporated EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 0 29 5 V and the output voltage range of 15 20
4. supply 3 GND Ground 4 GND Ground Table 2 3 J70 Pin Description Optional Use to decrease of impedance to reach better performance Pin No Net Name at Schematics Description 1 V HBRIDGE Extra output stage power supply 2 V HBRIDGE Extra output stage power supply 3 GND Extra ground 4 GND Extra ground Figure 2 3 J73 Pin Numbers PCB connector top view Table 2 4 J73 Pin Description Optional Pin No Net Name at Schematics Description 1 V HBRIDGE Extra output stage power supply 2 V HBRIDGE Extra output stage power supply 2 1 1 PSU Control Interface J72 This interface is used for onboard sensing of output supply voltage and for the power supply volume control PSVC signal Figure 2 4 J72 Pin Numbers NO e A oa PCB connector top view System Interfaces 2 3 Loudspeaker Connectors J100 J800 Table 2 5 J72 Pin Description Pin No Net Name at Schematics 2 V HBRIDGE 3 GND 4 RESET 5 PSVC 2 2 Loudspeaker Connectors J100 J800 Description Reserved for future use Sense of output power supply Ground System reset bidirectional Power supply volume control signal Both positive and negative speaker outputs are floating and may not be connected to ground e g through an oscilloscope Figure 2 5 J100 J800 Pin Numbers 2 1 P
5. 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 2 6 Net Name at Schematics GND PSVC MCPU GND RESET BKND ERR MUTE PDN RESERVED SDA GND SCL RESERVED CONF SEL RESERVED GND RESERVED SD1 OTW RESERVED HP SEL GND RESERVED GND 5V Description Ground Power supply volume control from mC input board Ground System reset bidirectional Activate MUTE before RESET for quiet reset Backend error or soft reset provides reduced click and pop reset without resetting 12C volume register settings Ramp volume from any setting to noiseless soft mute Mute can also be activated by I2C Power down The TAS5508B goes to a power down state when activated 12C data clock Ground 12C bit clock Configuration select Channel 5 and 6 speaker outputs active and line outputs inactive when high Line outputs active and channel 5 and 6 speaker outputs inactive when low Ground Shutdown error reporting for front left front right and center channels Activated if the TAS5121 has high current or high temperature See Chapter 3 Shutdown error reporting for rear left rear right surround left surround right and subwoofer channels Activated if TAS5121 has high current or high temperature See Chapter 3 Temperature warning Activated if one or more TAS5121 has reached the temperature warning level Headphone select Headphone is a
6. CB connector top view Table 2 6 J100 J800 Pin Description Pin No Net Name at Schematics 1 OUT 1 2 OUT 2 2 3 Line Out Connectors J950 and J951 Figure 2 6 J950 and J951 Pin Numbers 2 1 3 4 PCB connector top view Table 2 7 J950 and J952 Pin Description Pin No Net Name at Schematics GND 2 OUT 3 OUT 4 OUT 2 4 Description Speaker negative output Speaker positive output Description Ground Line out signal Line out signal Line out signal 2 4 Headphone Connector J900 Figure 2 7 J900 Pin Numbers 4 PCB connector top view Table 2 8 J900 Pin Description Pin No Net Name at Schematics 1 OUT L 2 GND 3 4 OUT R 2 5 Line Output Select J50 Figure 2 8 J50 Pin Numbers Table 2 9 J50 Pin Description Pin No Description 1 2 Line outputs enabled 2 3 Line outputs disabled 2 6 Headphone Select J32 Figure 2 9 J32 Pin Numbers Table 2 10 J32 Pin Description Pin No Description 1 2 Headphone enabled 2 3 Headphone disabled Headphone Connector J900 Description Left headphone output Ground For future use Right headphone output System Interfaces 2 5 Control Interface J30 2 7 Control Interface J30 This interface connects the TAS5508 5121K8EVM board to a TI input board Table 2 11 J30 Pin Description Pin No 1 oa R Pp oO o o 1
7. IP TEXAS INSTRUMENTS TAS5508 5121K8EVM Evaluation Module for the TAS5508B 8 Channel Digital Audio PWM Processor and the TAS5121 Digital Amplifier Power Output Stage User s Guide IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to T s terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty Except where mandated by government requirements testing of all parameters of each product is not necessarily performed TI assumes no liability for applications assistance or customer product design Customers are responsible for their products and applications using TI components To minimize the risks associated with customer products and applications customers should provide adequate design and operating safeguards TI does not warrant or represent that any license either express or im
8. V for the system supply 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 75 C The EVM is designed to operate properly with certain components above 75 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 touch Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright O 2006 Texas Instruments Incorporated Preface Read This First About This Manual This manual describes the operation of the TAS5508 5121K8EVM evaluation module from Texas Instruments How to Use Thi
9. ata Converters dataconverter ti com Automotive www ti com automotive DSP dsp ti com Broadband www ti com broadband Interface interface ti com Digital Control www ti com digitalcontrol Logic logic ti com Military www ti com military Power Mgmt power ti com Optical Networking www ti com opticalnetwork Microcontrollers microcontroller ti com Security www ti com security Telephony www ti com telephony Video amp Imaging www ti com video Wireless www ti com wireless Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2006 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 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 electromagnet
10. atures such as digital volume control input and output mixers auto mute equalization tone controls loudness dynamic range compression and PSVC output There are configuration options for stereo line level output stereo headphone output and power stage failure protection This 7 1 system is designed for home theater applications such as A V receivers DVD minicomponent systems home theater in a box HTIB DVD receivers or plasma display panels PDPs Topic Page 1 1 TAS5508 5121K8EVM Features een nnn 1 2 1 222 PCB Key Map tala 1 3 TAS5508 5121K8EVM Features 1 1 TAS5508 5121K8EVM Features 8 channel PurePath Digital evaluation module Stereo channel line output Stereo headphone output Self contained protection system short circuit and thermal Uo LLL Standard 12S and 12C control connector for TI input board Double sided plated through PCB layout Figure 1 1 Integrated PurePath Digital Amplifier System Texas Instruments 2 Channel Headphone Output L 2 Channel L Rec Line Output 6 Channel Analog Input TAS5508 5121K8EVM Control Interface Module 8 Channel Speaker Output PC Interface Optical Coaxial S PDIF Input Example Input PC Board 1 2 PCB Key Map PCB Key Map The physical structure for the TAS5508 5121K8EVM is illustrated in Figure 1 2 Figure 1 2 Physical Structure for TAS5508 5121K8EVM Rough Outline PSU Left Lin
11. ce Fault Reporting 4 44 xk RR RR ERREUR REOR eee 3 3 Figures 00 Y O0OO0OAO0DN NpNA Integrated PurePath Digital Amplifier System sseelllessseessese 1 2 Physical Structure for the TAS5508 5121K8EVM Rough Outline 1 3 Recommended Power Up Sequence 0c cece eee 2 2 J71 and J70 Pin Numbers 0 ccc te nee en en ra 2 2 J73 P IM NUMDELS ai cue bd a fA DE 2 3 J72 Pin Numbers co 2 3 J 100 J800 Pin NUMDEES 4 Ou aces epe trs repe ba b exa PS E EE eve dac 2 4 J950 and J951 Pin Numbers oocoococcccr ee rh 2 4 4900 Pini Numbers es Rueda eR ehe ia 2 5 J50 Pin Numbers co 2 5 J32 Pin NUITIDO S 2 na a a a baad A a ara 2 5 Tables p od oo oNOOPOD P o FO ED hy a EEE I D a 6 vi Recommended Supply Voltages sssssssssssesese een 2 2 J71 Pin Description oe x Rex mede ae XR PRX aes 2 3 J70 Pin Description ose kt RERRERRRRERE aaa eee eee GR RE 2 3 J73 Pin Descrptlon x eret rcx A ARA ee wa eee X RENE EX RE 2 3 J72 Pin Description ic eds eth VER EAR ra auc xx dee SUE ne 2 4 4100 9800 Pin Description exe Rx Pee Rx Ex RE RA ERE RE 2 4 J950 and J952 Pin Description 0 Ih 2 4 J900 Pin Description eR te RR GRON RACER A EN ce 2 5 J50 Pin DESCKIPUOMN serra oer N a RO DR e doe don 2 5 J32 Pin Description HR en 2 5 J30 Pin Description sesi aata oet a ter dt 2 6 J40 Pin Description seen en ee 2 7 Channel
12. ctive when low and inactive when high Ground Ground 5 V de power supply output Digital Audio Interface J40 2 8 Digital Audio Interface J40 The digital audio interface contains digital audio signal data 12S clocks etc See the TAS5508B Data Manual SLES162 for signal timing and details not explained in this document Table 2 12 J40 Pin Description Pin No Net Name at Schematics GND MCLK Description Ground Master clock input Low jitter system clock for PWM generation and reclocking GND SDIN1 SDIN2 SDIN3 SDIN4 GND SCLK GND Ground connection from source to the TAS5508B must be a low impedance connection Ground 12S data 1 channel 1 and 2 12S data 2 channel 3 and 4 I S data 3 channel 5 and 6 12S data 4 channel 7 and 8 Reserved Reserved Ground 128 bit clock Ground 128 left right clock 13 14 15 LRCLK GND Ground Reserved 16 GND Ground System Interfaces 2 7 2 8 Chapter 3 Protection This chapter describes the short circuit protection and fault reporting circuitry of the TAS5121 device Topic Page 3 4 Short Circuit Protection and Fault Reporting Circuitry 3 2 3 2 Device Fault Reporting m 3 3 3 1 Short Circuit Protection and Fault Reporting Circuitry 3 1 Short Circuit Protection and Fault Reporting Circuitry 3 2 The TAS5121 is a self protecting device that provides device fault reporting including high temp
13. e Right Line 00 Eg E el 4000 200 iv Output Output J950 4951 E Ed Speaker El Output Stage Channel 8 Output Stage Channel 7 Output Stage Channel 4 Output Stage Channel 3 Output Stage Channel 2 o on S He 5 es 30 o Output Stage Channel 6 TAS5508B X5 Headphone Output Control Input Signal J900 Interface J30 Interface J40 EXAS INSTRUMENTS Overview Output Stage Channel 1 PSU Interface 473 PSU Interface 471 Gate Drive Regulator 5 V Regulator 1 3 1 4 Chapter 2 System Interfaces This chapter describes the TAS5508 5121K8EVM board in regards to power supplies and system interfaces Topic Page 2 1 Power Supply PSU Interface J70 J71 and J73 2 2 2 2 Loudspeaker Connectors J100 J800 2 4 2 3 Line Out Connectors J950 and J951 sseesse 2 4 2 4 Headphone Connector J900 leeeeeeeeeeeee 2 5 2 95 2l ineiOutput Select J50 P c r ere eee eee eer 2 5 2 6 Headphone Select J32 eeeeeeeeeeeeeeeee 2 5 2 72 Gontrollinterface J30 meee eee E EP 2 6 2 8 Digital Audio Interface J40 eese 2 7 2 1 Power Supply PSU Interface J70 J71 and J73 2 1 Power Supply PSU Interface J70 J71 and J73 The TAS5508 5121K8EVM module must be powered from external power supplies High end audio performance requires a stabilized pow
14. er supply with low ripple voltage and low output impedance NS mn Note The length of the power supply cable must be minimized Increasing length of PSU cable is equal to increasing the distortion for the amplifier at high output levels and low frequencies Lo The maximum output stage supply voltage depends of the speaker load resistance Check the recommended maximum supply voltage in the TAS5121 data sheet SLESO86 Table 2 1 Recommended Supply Voltages Voltage Limitations Current Description 4 Q load Recommendations System power supply 15 20V 0 3A Output stage power supply 0 30 5V 6 At t The rated current corresponds to 2 channel full scale 80 W each which most likely is adequate for a standard 8 channel amplifier design The recommended TAS5121 power up sequence is shown in Figure 2 1 For proper TAS5121 operation the RESET signal should be kept low during power up RESET is pulled low during power up for 200 ms by the onboard reset generator U73 Figure 2 1 Recommended Power Up Sequence System power supply Output stage power supply RESET 1ms Figure 2 2 J71 and J70 Pin Numbers System Power Supply 4 3 2 1 PCB connector top view 2 2 Power Supply PSU Interface J70 J71 and J73 Table 2 2 J71 Pin Description Pin No Net Name at Schematics Description 1 V HBRIDGE Output stage power supply 2 System power
15. erature protection and short circuit protection The TAS5121 is configured in back end auto recovery mode and therefore resets automatically after all errors M1 M2 and M3 is set low This means that the device restarts itself after an error occasion and reports shortly through SD1 and SD2 error signals The shutdown report signals are separated into two wires SD1 and SD2 SD1 covers the primary information channels front channels and center where the SD2 covers the secondary information channels rear channels surround line out channels and subwoofer Therefore a microprocessor can react differently on errors depending on primary or secondary channels faults e g lowering the output level or shutting down the secondary channels on continues error reporting from one of those where the primary channels continue Device Fault Reporting 3 2 Device Fault Reporting The OTW and SD outputs from the TAS5121 indicate fault conditions See the TAS5121 data sheet SLESO86 for a description of these pins The temperature warning signals at the TAS5508 5121K8EVM board are wired OR to one temperature warning signal OTW pin 22 in control interface connector J30 Shutdown signals are wired OR into two shutdown signals SD1 and SD2 pin 20 and pin 21 in control interface connector J30 See Table 3 1 for channel allocation Table 3 1 Channel Allocation Front left J100 SD1 Front right J200 SD1 Rear left J300 SD2 Rear r
16. ic 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 PARTY 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
17. ight J400 SD2 Surround left or line out left J500 SD2 Surround right or line out right J600 SD2 Center J700 SD1 Subwoofer J800 SD2 The shutdown signals together with the temperature warning signal give chip state information as described in Table 3 2 Device fault reporting outputs are open drain outputs Table 3 2 TAS5121 Warning Error Signal Decoding OTW SDx Device Condition 0 High temperature error and or high current error High temperature warning ak ado OO 4 0 Undervoltage lockout or high current error 1 Normal operation no errors warnings Protection 3 3 3 4
18. plied is granted under any TI patent right copyright 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 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 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 Following are URLs where you can obtain information on other Texas Instruments products and application solutions Products Applications Amplifiers amplifier ti com Audio www ti com audio D
19. s Manual This document contains the following chapters Y Chapter 1 Overview Y Chapter 2 System Interfaces Chapter 3 Protection Information About Cautions and Warnings This manual may contain cautions and warnings This is an example of a caution statement A caution statement describes a situation that could potentially damage your software or equipment This is an example of a warning statement A warning statement describes a situation that could potentially cause harm to you The information in a caution or a warning is provided for your protection Please read each caution and warning carefully Related Documentation From Texas Instruments The following table contains a list of data manuals that have detailed descriptions of the integrated circuits used in the design of the TAS5508 5121K8EVM The data manuals can be obtained at the URL http www ti com Part Number Literature Number TAS5508B SLES162 TAS5121 SLESO086 TLV272 SLOS351 SN74LVC1G00 SCES212 SN74LVC1G08 SCES217 SN74LVC2G08 SCES198 SN74LVC1G14 SCES218 SN74LV123A SCLS393 SN74LVC125A SCAS290 SN74LVC1G126A SCES211 LM317M SLVS297 TPS3801K33 SLVS219 TPS76733 SLVS208 Additional Documentation TAS5508 5121K8EVM Application Report SLEA034A PC Configuration Tool for TAS5508B TAS5508 GUI ver 2 1 or later General Application Notes FCC Warning This equipment is intended for use in a laboratory test environment only It generates
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