SiT6098EBB Manual - Digi-Key
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1. Si i i aan e SiT6098EBB Manual Rev 1 2 April 2015 SiT6098EBB Evaluation Board User Manual for 1 Hz 32 kHz Oscillator and TCXO in CSP SiT1532 4 SiT1552 1 SiT6098EBB Evaluation Board Introduction ccccccecccccecceseseeeeeeseeeeeeeeeeeeeeeeeesaaeeeeeesaaeeeeeeessageeeeeeeas 1 2 BOALCIAIOMMAU OM sunsets vanernatcnmenesisvrscetiievesmanesesmas rara s n Eeuna Eas EEEE TENAS T ENEE EEE aa 1 ME 8 E e E A E E E E E E E E ee ee 2 3 1 DUTTON ese E E E E TEE E E E E E EE E EEE 2 3 2 Buffered Clock Output ccccccccccccccsesseceeeceeeeeceeecseeeeceeeeeaeeeeeeeesaaseeeeesseaseeeeesseaseeeeessaaeeeeeessageeeees 2 3 3 Clock Output Direct cccccceccccecseseeeeeceeeeeceeeseeeseeeesseeaeeeesseauececessaaeceeessauseceeesaeaseeeessaageeeeesseaass 2 3 4 DUT Current Consumption Measurement cceeeeeccccceecceeeeeeeeeeeeeseeaeeeseeeeeeesseeeeeeeceeeeesaaeeeeeeees 3 4 Application 0 gt gt ee 3 4 1 SO FMOUV AMONG ca ceciceeetcesenedsesvetocesbsanedesdesasidedsgabedeendausdnestcbedycnsentesSsbatedeubdanseaustasadeenseusdadedebedyenseesestes 3 4 2 General Configuration ccccccccssssseeeceeeeeeeaeeeeeeeeeeeeeeaeeeeeeeeeeeesseeeseeeeeeeessaeaseeeeeeeessaaaeeeeeeeeeseaas 3 4 2 1 Configuration 1 DC Coupled Output eee cccccccccseeseeeeeeeeeeeeeeeeeeeeeeeessseeeeseeeeesseeeeeeeeeeeeeseaas 4 4 2 2 Configuration 2 AC Coupled Output ee eccceccseeeeceeeeeeeeeeeeeeeeeeeeeeeeseaeeeee2. Manual
3. A A1 Board Schematic Current meas Connector VDOT VEUT v _EUFFER i R3 Close to U2 I Desolderfor Ort e AE Close to J2 cl DMP Trace tom Ul to U2 shold be less that 20mm DUT Chat Test Point DUT Power Connector m CUT TPI OUT OUT l 3 DTT a Rl OUT GHD DUT E For AC coupling ay SNR El 100 pF cap Ra Ra SOOR Ohm S000 ADAGS17 1 Close to 2 GHD aL AMP_POWER i GHD GHD GHD aes GHD load Cap Smmitom Ul Tet md post For probe clip iw v BUFFER W BUFFER GHD E Butter Power Connector GHD Close to J3 GHD ov W BUFFER Figure A1 SiT6098EBB schematic SiTime Corporation 7 SiT6098EBB User Manual 2 mMm e SiT6098EBB Manual Rev 1 2 April 2015 A2 Board Layout Current Direct out test AC DC coupling measurement jumper point capacitor resistor Si Si T6098EBB Revi 0 SiTime Corporation Buffer power bead aer Pts cen bd Buffer output connector connector J1 A Buffer power J3 v U 5 Buffer output Curr test point meas J4 43 DUT current l measurement I cl Optional load connector une 7 Capacitor GNB WAY power cr DUT power connector Direct output connector Pini J5 Optional power filter capacitor Posts for scope GND clip Figure A2 SiT6098EBB layout SiTime Corporation 990 Almanor Avenue Sunnyvale CA 94085 USA Phone 408 328 4400 http www sitime com SiTime Corporation 2008 2013 The information contained here
4. User Manual 3 Connectors Overview Designator Purpose DUT Power Buffer Power Buffer output Direct output DUT Consumption Current measurement Mating connectors Designator Mating connectors Digi Key Part Numbers WM2613 ND J4 S Crimps for J2 J3 J4 WM6685CT ND 7pcs s HOND Crimps for J6 H9999 ND 2pcs Jt A97594 ND Pin 1 orientation of the chip is defined by a chamfer and dot in the silkscreen pattern 3 1 DUT Power Evaluation boards have input two pin connector J2 for power supply Pins polarities are identified on the silkscreen pattern near connector 3 2 Buffered Clock Output This EVB uses an operational amplifier to buffer the oscillator clock output to make it easy to connect to test and measurement equipment through SMA cables without loading the ultra low power clock output driver The ADA4817 1 FET operational amplifier is used in a unity gain buffer configuration It is a unity gain stable ultra high speed voltage feedback amplifier with FET inputs The three pin connector J3 is intended for supplying the VDD power to the on board operational amplifier Pin polarities are identified on the silkscreen pattern near connector J3 The operational amplifier requires a dual power supply and should be 3V for negative power rail V and 8V for the positive supply V Buffer supply voltage Power rail name Voltage V 8V max Ve S 3V min 3 3 Clock Output Direct The oscillator output is
5. best observed through the buffered output path using a test probe placed on the test point TP2 or through the SMA connector J1 The buffer can be bypassed and the output can be directly observed thru J6 2mm pitch pin header connector or using test point TP1 see Figures A2 A3 of Appendix A for test points arrangement on the board Section 4 1 shows recommended measurement configurations When probing the oscillator output directly the probe loading can affect the output waveform and power consumption of the device SiTime recommends active probes with 10 MQ and 1pF impedance SiTime Corporation 2 SiT6098EBB User Manual Si i ll mM e SiT6096EBB Evaluation Board User Manual 3 4 DUT Current Consumption Measurement Two pin connector J4 enables measuring the current consumption To measure the current properly remove zero ohm resistor R3 and connect the DMM or other current measuring device across this connector 4 Application Notes 4 1 Configurations SiT6098EBB supports multiple configurations for evaluating AC and DC coupled output modes of SiTime oscillator In addition this EVB provides the ability to add additional load capacitance and to bypass the output buffer Figure A1 see Appendix A shows the schematic of SiT6098EBB Components labeled DNP are not assembled Components which are common to all listed bellow configurations have nominal values assigned to them 4 2 General Configuration Figure 1 shows general shipmen
6. in is subject to change at any time without notice SiTime assumes no responsibility or liability for any loss damage or defect of a Product which is caused in whole or in part by i use of any circuitry other than circuitry embodied in a SiTime product ii misuse or abuse including static discharge neglect or accident ili unauthorized modification or repairs which have been soldered or altered during assembly and are not capable of being tested by SiTime under its normal test conditions or iv improper installation storage handling warehousing or transportation or v being subjected to unusual physical thermal or electrical stress Disclaimer SiTime makes no warranty of any kind express or implied with regard to this material and specifically disclaims any and all express or implied warranties either in fact or by operation of law statutory or otherwise including the implied warranties of merchantability and fitness for use or a particular purpose and any implied warranty arising from course of dealing or usage of trade as well as any common law duties relating to accuracy or lack of negligence with respect to this material any SiTime product and any product documentation Products sold by SiTime are not suitable or intended to be used in a life support application or component to operate nuclear facilities or in other mission critical applications where human life may be involved or at stake SiTime Corporation 8 SiT6098EBB User
7. r Buffer output test point TP2 see Figures A1 A2 of Appendix A for test point locations on the board A 0 1 uF capacitor is placed in the clock output signal path Figure 3 shows the circuit for this configuration V _BUFFER OUT Buffer T Buffer Out Test Point OUT TP2 Ji C R DUT Out Test Point DNP 10 R5 OUT BUFFERED fo DUT TP1 OUT OUT 49 9 eed Ul T BE GS E 2 our Te Rl OUT iit f 10 Sas FAN ta ja Br SMA Connector 5 4 0 1 uF Cap For AC coupling VOO MD x R1 100 pF cap R2 C2 R2 500MOhm 500M ADA4817 1 i Close ta U2 GND DNP J GND 0 GND L GND V BUFFER GND GND Additional load Cap Figure 3 AC coupled output configuration SiTime Corporation 4 SiT6098EBB User Manual Si i i ll mM e SiT6096EBB Evaluation Board User Manual 4 2 3 Configuration 4 Direct Output with Additional Load Capacitor This configuration is intended for observing direct oscillator output with a passive high input impedance gt 1 MQ lt 1 pf scope probe at test point TP1 see Figures A1 A2 of Appendix A for test points on the board or to connect the oscillator output to end user system using 2 mm pitch header connector J6 with an optional user defined load capacitor C2 Figure 4 shows the circuit for this configuration DUT Out Test Point GND GND Additional load Cap Figure 4 Circuit for observing direct oscillator output 4 2 4 Configuration 5 DUT Power Supply Filter This configuration is intended for providing po
8. sseeeeeesseaeeeeessaaees 4 4 2 3 Configuration 4 Direct Output with Additional Load Capacitor ccccccccscseeeeeeeeeeeeeeeeeeeeees 5 4 2 4 Configuration 5 DUT Power Supply Filter cccccccccccsseeeeceeeseeeeeeesseeeeeeesseeeseeeessaeeeeeeesaeees 5 4 2 5 Measuring SiT1532 4 SIT1552 Current CONSUMPTION cece eceeeeeneeeeeeeeeeeeeeeeeeeaeeeeeeeeeaeees 6 APPONI 4 See een eet one ee E ee ee ee eee eee ee eee ee eee 7 Al Board SChemalC ener ene eee ee me ee ee ee 7 This evaluation board supports the following products iT1532 32 768 kHz oscillator in 1 5 x 0 8 mm CSP package SiT1534 1 Hz to 32 768 kHz oscillator in 1 5 x 0 8 mm CSP package iT1552 32 768 kHz TCXO in 1 5 x 0 8 mm CSP package 1 SiT6098EBB Evaluation Board Introduction The SiT6098EBB evaluation board provides the ability to evaluate the functionality of the 32 kHz oscillators on a simple board that makes it easy to power up the oscillator and observe the output buffered through an operational amplifier The analog buffer isolates the device from the significant loading which is important for performing best waveform and current measurements The SiIT6098EBB supports the following package size 1 5 x 0 8 mm CSP 2 Board Information A PCB view of the SiT6098EBB board with component reference designator call out is shown in Figure A2 SiIT6098EBB layout SiTime Corporation 1 SiT6098EBB User Manual Si j l mM e SiT6096EBB Evaluation Board
9. t configuration Current meas Connector YDUT i YOUT A I4 J Degalder for current measurement Close ta J2 VIN 1 DHF DUT Out Test Point DUT Power Comector 7 DUT TP RI 2 OUT TP OUT To Buffer OpAmp S06VMAX l uA AOE eke p 3 4 DC coupled L YDD GND sow f 7 Pml Connector GHD DNP J6 0 GND a GND Le DHP GHD GND Additional GND load Cap Figure 1 General EVB configuration SiTime Corporation 3 SiT6098EBB User Manual Si i i ll mM SiT6096EBB Evaluation Board User Manual 4 2 1 Configuration 1 DC Coupled Output This configuration is intended for observing a DC coupled output through an oscilloscope through the buffered output at SMA J1 connector or test point TP2 see Figures A1 A2 of Appendix A for test point locations on the board Figure 2 shows the circuit for this configuration V BUFFER oU iffer T UT Butter Buffer Out Test Point OUT TP2 Ji Ch R DUT Out Test Point DNP 10 R5 OUT BUFFERED fo DUT TPI OUT OUT 49 9 Eo ar G c3 cs on boa 2 OUT TP i OUT 0 1 1 0 SMA_Connects 3 4 For DC coupling VDD GND R1 0 Ohm R2 C2 R2 500MOhm 500M ADA4817 1 ei gt GND DNP J6 GND D GND 7 GND V _BUFFER GND GND Additional load Cap Figure 2 DC coupled output configuration 4 2 2 Configuration 2 AC Coupled Output This configuration is intended for observing an AC coupled output through an oscilloscope through the buffered output at SMA J1 connector o
10. wer supply bypass filtering for the oscillator by soldering user defined capacitor C1 Figure 5 shows circuit for this configuration The DUT power supply bypass filtering is not required in common cases It should be used only if power supply noise is significant or to cancel parasitic inductance effect of long wires from the power supply to EVB Current Measurement Connector 1 J4 Optional DUT Power filter DUT Power Connector 1 4 7V MAX 2 J2 Figure 5 Circuit for providing DUT power filter SiTime Corporation 5 SiT6098EBB User Manual Si i l mMm e SiT6096EBB Evaluation Board User Manual 4 2 5 Measuring Current Consumption When measuring supply current simply remove jumper resistor R3 across 2 pin connector J4 Figure 6 shows circuit for this configuration and connect a precision DMM e g Agilent U1242A to connector J4 Figure 7 shows the setup for measuring supply current Current Measurement Connector R3 Desolder for DNP current measurement Figure 6 DUT supply current measurement iy Agilent U1252A SIT 179 dh cal 17 Oc 2012 SE Labs siT 179 due 17 Oct 2013 CAT M 10A MAX a40mA 1000V ere f Fusen a Sn x f s G fz x N f Need MP IDD 1 03 uA under load R3 removed mine Figure 7 Setup for measuring IDD SiTime Corporation 6 SiT6098EBB User Manual O i l mMm SiT6098EBB Manual Rev 1 2 April 2015 Appendix
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