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Examples Using PSIEVM to Drive TI Data Converter EVMs

14

SBAU289 – October 2017

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Copyright © 2017, Texas Instruments Incorporated

Precision Signal Injector EVM (PSIEVM)

Figure 12. ADS8881EVM GUI Spectral Analysis for PSIEVM Input

Table 9. Example 1 Results

Measurement

Value

SNR

97.7 dB

THD

–116.2 dB

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Summary of Contents for PSIEVM

Page 1: ...alog to digital converters ADC by generating a very low distortion low noise signal This signal generator is powered by and controlled by the USB port This user s guide provides a description of how to configure and control the hardware using the provided software GUI The following related documents are available through the Texas Instruments web site at www ti com Table 1 Associated Devices Devic...

Page 2: ...tage Example 10 10 ADS8881EVM Connected to PSIEVM 12 11 PSI GUI Setup for ADS8881EVM 13 12 ADS8881EVM GUI Spectral Analysis for PSIEVM Input 14 13 ADS8900BEVM Connected to PSIEVM 15 14 PSI GUI Setup for ADS8900BEVM 16 15 ADS8900BEVM GUI Spectral Analysis for PSIEVM Input 17 16 ADS8681EVM Connected to the PSIEVM 18 17 PSI GUI Setup for ADS8681EVM 19 18 ADS8681EVM GUI Spectral Analysis for PSIEVM In...

Page 3: ... connection to a PC The software platform that accompanies the PSIEVM allows for the user to adjust the PSIEVM output through the graphical user interface GUI that is downloaded to the computer Along with the PSIEVM this evaluation kit includes an A to micro B USB cable to connect to a computer via USB 3 0 or below as well as 2 SMA to SMA coaxial cables for EVM connectivity 1 1 PSIEVM Features The...

Page 4: ...o install header P7 for the source of the power supplies For general operation the USB power is sufficient and external power is not required see section Section 6 1 JP7 Open EEPROM in Write Protect Mode The EEPROM is programmed during manufacturing with correction coefficients To reprogram the correction coefficients short jumper JP7 Since the EEPROM is programed in the factory it is not necessar...

Page 5: ...installation a prompt with a Device Driver Installation appears on the screen Click the Next button to proceed NOTE A notice may appear on the screen stating that Windows cannot verify the publisher of this driver software Select Install this driver software anyway Figure 3 Device Driver Installation Wizard Prompts The PSIEVM requires LabVIEW Run Time Engine and may prompt for the installation of ...

Page 6: ...tation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 4 LabVIEW Run Time Engine Installation After these installations verify that C Program Files x86 Texas Instruments Precision Signal Injector is as shown in Figure 5 ...

Page 7: ... provided USB cable to connect the PSIEVM to the computer LED D3 lights up indicating that the PSIEVM is powered up 2 Launch the Precision Signal Injector GUI PSI GUI software 3 Connect the PSIEVM to the desired DUT to connector P2 for single ended or P4 and P5 for differential signal see Table 3 Ensure a firm contact on these connectors for effective signal transmission 4 Connect the DUT EVM to t...

Page 8: ...rough the PSI GUI the user is able to control the input signal amplitude offset frequency and type single ended or differential The PSI GUI gives the user control over the signal being applied to the DUT Figure 7 shows the PSI GUI as it appears on the user s computer screen PSI GUI Operation 1 Select either Single Ended or Differential to ensure the output from the PSIEVM is the type the DUT takes...

Page 9: ... offset voltage can be added to the single ended output of the PSIEVM or a common mode voltage can be added to the differential outputs Table 4 shows the jumper combinations that are required to implement an offset or common mode voltage Once the jumpers are placed in the correct configuration set the offset voltage or common mode voltage through the GUI Table 4 Offset Voltage or Common Mode Volta...

Page 10: ...on Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 8 shows an example of the GUI with single ended output and an added offset voltage The GUI does all of the calculations for the given inputs and shows the expected output on the plot Figure 8 Offset Voltage Example Figure 9 shows an example of the GUI with differential output and an added common m...

Page 11: ...d when bypassing the eighth order onboard filter and consequently THD and SNR are degraded The PSI GUI allows input of any frequency up to 20 kHz 3 6 Typical Performance Table 6 shows typical performance seen using the PSIEVM with the ADS8900BEVM with full scale signals Table 6 Typical Performance Measurement Value SNR 101 dB THD 123 dB SNR without filter 63 8 dB THD without filter 86 3 dB DC reso...

Page 12: ...ware Setup Reference Designator Position or Connection ADS8881EVM J1 PSIEVM P2 ADS8881EVM JP 2 Ground ADS8881EVM JP 3 Open PSIEVM P2 ADS8881EVM J1 PSIEVM JP1 JP3 Filter PSIEVM JP4 Ground Figure 10 ADS8881EVM Connected to PSIEVM Table 8 ADS8881EVM Example Parameters Parameter Value ADS8881EVM input type Single ended PSI GUI output type Single ended ADS8881EVM maximum input range VREF to VREF 4 5 V ...

Page 13: ... Using PSIEVM to Drive TI Data Converter EVMs 13 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 11 PSI GUI Setup for ADS8881EVM ...

Page 14: ... 14 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 12 ADS8881EVM GUI Spectral Analysis for PSIEVM Input Table 9 Example 1 Results Measurement Value SNR 97 7 dB THD 116 2 dB ...

Page 15: ...equal length cables as shown in Table 10 and Figure 13 Next the output parameters should be selected as shown in Table 11 Lastly enable the output on the PSI GUI and use the ADS8900BEVM to acquire the signal Figure 14 and Figure 15 show the two GUIs for this test Table 12 shows expected results for this test setup Table 10 Example 2 Hardware Setup Reference Designator Position or Connection ADS890...

Page 16: ...M to Drive TI Data Converter EVMs www ti com 16 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 14 PSI GUI Setup for ADS8900BEVM ...

Page 17: ...7 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 15 ADS8900BEVM GUI Spectral Analysis for PSIEVM Input Table 12 Example 2 Results Measurement Value SNR 100 8 dB THD 123 5 dB ...

Page 18: ...4 shows Lastly enable the output on the PSI GUI and use the ADS8681EVM to acquire the signal Figure 17 and Figure 18 show the two GUIs for this test The output range of the PSIEVM is limited to 11 88 V peak to peak To test SAR ADC at higher voltages than 5 93 V use the common mode offset To implement an offset in single ended mode JP4 on the PSIEVM must be moved to SE_VOS see Section 3 2 Table 15 ...

Page 19: ...cision Signal Injector EVM PSIEVM Table 14 ADS8681EVM Example Parameters Parameter Value ADS8681EVM input type Single ended PSI GUI output type Single ended ADS8681EVM maximum input range 3 VREF to 3 VREF 12 V to 12 V PSI GUI amplitude 11 88 Vpp maximum setting PSI GUI common mode 0 V PSI GUI frequency 2 kHz PSIEVM connectors P3 Figure 17 PSI GUI Setup for ADS8681EVM ...

Page 20: ... Analog Interface The evaluation board uses a variety of amplifiers in different configurations to compose the output signal based on the user inputs through the GUI The signal path is explained fully in Section 5 4 5 2 Digital Interface The EVM communicates with the computer over USB There are two devices on the EVM that communicate to the computer the MSP430F5503 and the electrically erasable pr...

Page 21: ...g signal is then placed through an eighth order filter and this is the single ended output signal For the differential output the single ended output is driven into a fully differential amplifier The offset or common mode voltage is controlled by a DAC which takes input from the MSP430 and produces a voltage that drives into the filter to add single ended offset and into the fully differential amp...

Page 22: ...ll jumper JP5 and header P7 Place JP5 in external mode Connect a 15 VDC supply and a 15 VDC supply to terminal block P7 The voltage input at header P7 is directly applied to the linear regulators CAUTION Ensure the connected power supply is at a maximum of 15 V Fluctuating above 15 V could result in component damage The PSIEVM must still be connected to the computer via the USB cable but this is o...

Page 23: ... output resistance will improve stability for driving a capacitive load and matches the impedance of the coaxial cabling Note that by adding output resistance there will be a voltage divider from the output resistance of the PSI and the input resistance of the DUT The PSIEVM is fully calibrated with R53 R59 and R100 as 0 Ω resistors 7 2 Cable Selection It is best practice to minimize the length of...

Page 24: ...0402 0402 12 C38 C39 C41 C78 4 0 1uF C0603C104J4RACTU Kemet CAP CERM 0 1 µF 16 V 5 X7R 0603 0603 13 C40 C45 2 2 2uF GRM188R61C225KE15D Murata CAP CERM 2 2 µF 16 V 10 X5R 0603 0603 14 C42 1 2200pF GRM1885C1H222JA01D Murata CAP CERM 2200 pF 50 V 5 C0G NP0 0603 0603 15 C43 C44 C75 3 10uF GRM219R60J106KE19D Murata CAP CER 10UF 10V 10 X5R 0805 0805 16 C47 C58 2 10uF C2012X5R1E106K125AB TDK CAP CERM 10 ...

Page 25: ...nix MOSFET P CH 20 V 3 7 A SOT 23 SOT 23 47 R1 R4 2 1 00k RP73D2B1K0BTG TE Connectivity RES 1 00 k 0 1 0 25 W 1206 1206 48 R2 1 6 34k ERA 8APB6341V Panasonic RES 6 34 k 0 1 0 25 W AEC Q200 Grade 0 1206 1206 49 R3 1 3 32k ERA 8APB3321V Panasonic RES 3 32 k 0 1 0 25 W AEC Q200 Grade 0 1206 1206 50 R5 1 3 16k ERA 8APB3161V Panasonic RES 3 16 k 0 1 0 25 W AEC Q200 Grade 0 1206 1206 51 R6 1 1 65k ERA 8...

Page 26: ...3 5000 Keystone Test Point Miniature Red TH Red Miniature Testpoint 86 TP12 TP13 TP14 TP15 TP16 5 5006 Keystone Test Point Compact Black TH Black Compact Testpoint 87 U1 1 OPA227U Texas Instruments High Precision Low Noise Operational Amplifier 5 to 36 V 55 to 125 degC 8 pin SOIC D0008A Green RoHS no Sb Br D0008A 88 U2 1 OPA1662AID Texas Instruments Sound Plus Low Power Low Noise and Distortion Au...

Page 27: ... TH 11 5x5mm 106 Y2 1 ASTX H11 20 000MHZ T Abracon Corporation Oscillators 20 MHz HCMOS 3 3V SMD 3 2x2 5mm 107 C33 C36 0 1000pF 12061A102FAT2A AVX CAP CERM 1000 pF 100 V 1 C0G NP0 1206 1206 108 C37 0 10uF GRM219R60J106KE19D Murata CAP CER 10UF 10V 10 X5R 0805 0805 109 FID1 FID2 FID3 0 N A N A Fiducial mark There is nothing to buy or mount Fiducial 110 JP2 JP5 0 HTSW 103 07 G S Samtec Header 100mil...

Page 28: ... ti com 28 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM 8 2 PCB Layers Figure 21 through Figure 25 illustrate the EVM PCB layout Figure 21 PCB Layer 1 Top Layer ...

Page 29: ...ill of Materials PCB Layout and Schematics 29 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 22 PCB Layer 2 Ground Layer ...

Page 30: ...rials PCB Layout and Schematics www ti com 30 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 23 PCB Layer 3 Power Layer ...

Page 31: ...ill of Materials PCB Layout and Schematics 31 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 24 PCB Layer 4 Bottom Layer ...

Page 32: ...terials PCB Layout and Schematics www ti com 32 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 25 PCB Top Silk Screen ...

Page 33: ...GND PGND AV_3 3 GND 22µF C68 GND 1µF C73 1µF C69 PGND GND PGND GND PGND2 PGND1 GND2 GND1 OUT 1 NC 2 SENSE 3 6P4V2 4 6P4V1 5 3P2V 6 GND 7 1P6V 8 0P8V 9 0P4V 10 0P2V 11 0P1V 12 EN 13 NR 14 IN 15 IN 16 NC 17 NC 18 NC 19 OUT 20 PAD 21 U9 TPS7A4700RGWR GND 22µF C50 GND 1µF C51 GND 0 R61 0 R62 DNP POS DNP USB PWR EXT PWR V_USB DNP A3 3 DNP D3 3 DNP P12 DNP M12 DNP 100µF C85 100µF C86 GND GND 1 0 R95 1 0...

Page 34: ... C3 0 1µF C6 0 1µF C4 0 1µF C10 0 1µF C13 0 1µF C11 0 1µF C12 Bypass_BP 1 2 3 JP1 Bypass Bypass_BP 1 2 3 JP3 Bypass 1 00k R1 1 00k R4 6 34k R2 3 32k R3 3 16k R5 1 65k R6 1 33k R7 102 R8 215 R9 5 49k R11 8 25k R12 2 05k R13 121 R14 GND GND 1 00M R10 DNP VCM GND 0 R55 80 6 R15 SE 10 0k R16 10µF C14 1 3 2 4 8 U2A OPA1662AID 7 5 6 4 8 U2B OPA1662AID 0 R100 Copyright 2017 Texas Instruments Incorporated...

Page 35: ...ND V_USB D PU 1_DM 27 4 R17 GND RST TDO TDI TCLK TMS TCK TEST DV_3 3 V_USB GND LED Green D3 0 1µF C30 0 1µF C31 0 1µF C32 0 1µF C28 0 1µF C26 V_USB NC 2 U4B TPD2E001DRL GND 1 1M R44 3 5 4 1 U4A TPD2E001DRL PU 0_DP 27 4 R20 0 1µF C16 GND 10 0k R30 10 0k R32 GND GND LED 0 22µF C29 GND 10 0k R28 DNP 10 0k R27 DNP DV_3 3 DV_3 3 VUSB 0 R49 PUR 1 1M R19 DNP GND DV_3 3 100k R23 150k R25 GND 100k R24 150k...

Page 36: ...D 10µF C75 GND 10µF C81 10µF C79 0 1µF C84 0 1µF C83 3 2 6 7 4 V V U18A OPA827AIDR R5V DNP SYNC 1 SCLK 2 DIN 3 AVDD VREF 4 GND 5 VOUT 6 U17 DAC8411IDCKR VCC 4 TRI STATE 1 GND 2 OUTPUT 3 20MHz Y2 1 00k R77 1 00k R80 1 00k R85 1µF C80 Copyright 2017 Texas Instruments Incorporated Bill of Materials PCB Layout and Schematics www ti com 36 SBAU289 October 2017 Submit Documentation Feedback Copyright 20...

Page 37: ...ND 10 0k R63 GND MODE1_PCM MODE2_PCM DV_3 3 VNEG GND 0 1µF C38 GND GND GND 51 1 R71 0 1µF C39 DV_3 3 10 0k R64 10 0k R65 10µF C44 10 0k R72 GND 10 0k R73 GND 2 2µF C40 2 2µF C45 2200pF C42 470 R98 10µF C43 AV_3 3 A0 1 A1 2 A2 3 VSS 4 SDA 5 SCL 6 WP 7 VCC 8 U20 DV_3 3 0 1µF C82 10 0k R96 10 0k R97 GND GND GND DV_3 3 PCM_SDA PCM_SCL 0 1µF C78 WP GND 1 2 JP7 Copyright 2017 Texas Instruments Incorpora...

Page 38: ...3 DNP 1000pF C36 DNP V_CM 1 2 3 JP8 0 R99 GND Dif_VCM GND 665 R52 665 R54 665 R60 665 R57 OUT OUT 0 R53 0 R59 Copyright 2017 Texas Instruments Incorporated Bill of Materials PCB Layout and Schematics www ti com 38 SBAU289 October 2017 Submit Documentation Feedback Copyright 2017 Texas Instruments Incorporated Precision Signal Injector EVM PSIEVM Figure 31 Schematic Page 6 ...

Page 39: ... no clean flux is not acceptable Assembly Note ZZ4 These assemblies must comply with workmanship standards IPC A 610 Class 2 unless otherwise specified SH J1 SH J2 SH J3 SH J4 LOGO PCB Logo1 Pb Free Symbol LOGO PCB Logo3 FCC disclaimer LOGO PCB Logo2 Texas Instruments H5 1891 H6 1891 H7 1891 H8 1891 Logo4 Copyright 2017 Texas Instruments Incorporated www ti com Bill of Materials PCB Layout and Sch...

Page 40: ...y set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warr...

Page 41: ...the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Page 42: ...ed loads Any loads applied outside of the specified output range may also result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Please consult the EVM user 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 even ...

Page 43: ...COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Page 44: ... TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN including but not limited to any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI product...

Page 45: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments PSIEVM ...

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