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Test ADS5295

8

Test ADS5295

This section describes how to test the ADS5295 device in two ways: Time Domain and Single Tone.

8.1

Step 1: Time Domain

Time Domain test consists of applying a RAMP function to the ADC inputs, capturing, and verifying that
every ADC code is generated incrementally.

•

Select Test Pattern tab.

•

In the TEST PATTERN MODES section, select RAMP PATTERN in the Enable Pattern Mode drop
down menu. (Note: the RAMP PATTERN is applied internal to the device to all ADC channels
simultaneously.)

Figure 9. ADS5295 Time Domain Setup

20

ADS5295, 8-Channel, Analog-to-Digital Converter Evaluation Module

SLAU442 – November 2012

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Copyright © 2012, Texas Instruments Incorporated

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Summary of Contents for ADS5295

Page 1: ...ch TSW1400 High Speed Data Converter Pro GUI 14 7 ADS5295 GUI Plug In Tab 17 8 Test ADS5295 20 8 1 Step 1 Time Domain 20 8 2 Step 2 Single Tone FFT 26 9 Board Configuration 29 9 1 Input Output Power Supply and USB 29 9 2 ADC Clock 31 9 3 Light Emitting Diodes LEDs 33 9 4 Miscellaneous Test Points 34 10 EVM Schematics 36 11 ADS5295EVM Bill of Materials 45 12 ADS5295EVM Printed Circuit Board Layout ...

Page 2: ...embly Drawing Bottom View 48 33 ADS5295EVM Solder Paste Top 49 34 ADS5295EVM Solder Paste Bottom 50 35 ADS5295EVM Soldermask Top 51 36 ADS5295EVM Soldermask Bottom 52 37 ADS5295EVM Bottom Layer Copper Bottom View 53 38 ADS5295EVM Layer 5 Ground Plane 54 39 ADS5295EVM Layer 4 Split Power Planes 55 40 ADS5295EVM Layer 3 Split Power Planes 56 41 ADS5295EVM Layer 2 Ground Plane 57 42 ADS5295EVM Top La...

Page 3: ...th low phase noise must be used as the source of input signal and clock optional in order to get the desired performance Additionally band pass filters BPF are required in signal and clock optional paths to attenuate the harmonics and noise from the generators Power Supply A single 5 V supply powers the EVM The supplies for the ADS5295 device are derived from the 5 V supply The power supply must b...

Page 4: ... various mode jumper settings 2 P1 or TP_VP TP2 5 V power supply 3 JP4 JP5 and JP6 are set to enable 3 3V analog 1 8VD digital and 1 8VA analog to device respectively 4 JP13 Enable onboard CMOS clock 5 JP16 JP18 JP19 JP20 ADC clock source selection jumpers 4 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Inst...

Page 5: ...on describes the installation procedure for the ADS5295 GUI For instructions on installing the TSW1400 High Speed Data Converter Pro GUI please visit the TI website 3 1 GUI Installation Mandatory Unzip the installer file found on the TI website Install the GUI by running setup exe as administrator 5 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Docume...

Page 6: ...nstallation and Operation www ti com Click Next 6 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 7: ...ext to proceed with the default install paths or Browse to desired paths and then click Next 7 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 8: ... com Read the Software License Agreement and click I accept and then click Next 8 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 9: ...n and Operation Click Next to begin installation of listed components 9 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 10: ...tion www ti com The following window shows the installation progress 10 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 11: ...ng Finish completes the installation The PC must be restarted to complete the installation 11 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 12: ...nnect a 5 V wall adapter to the TSW1400EVM at the J12 connector Connect a USB cable from the PC to USB1 on the ADS5295EVM Connect a USB cable from the PC to USB port J5 of the TSW1400EVM An external sampling clock is not required as the onboard 80 MHz CMOS clock oscillator is used in the default configuration Figure 3 Hardware Setup of TSW1400EVM and ADS5295EVM 12 ADS5295 8 Channel Analog to Digit...

Page 13: ...the external power supply across TP_VP and TP2 power up is complete One green LED LED_ 5V and one orange LED LED33VA should turn on as shown in Figure 4 also see Figure 20 Figure 4 Power Up Indications 13 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 14: ...are the GUI automatically detects the TSW1400EVM that is connected and reports its serial number as shown in Figure 5 Clicking OK connects to the board Figure 5 High Speed Data Converter Pro GUI Launch 14 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 15: ... corner of the GUI select ADS5295 in the drop down menu of Select ADC Click Yes to update the Firmware for the ADC 15 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 16: ... tab labeled ADS5295 GUI appears in the High Speed Data Converter Pro GUI as shown in Figure 6 This tab allows control of the ADS5295 device Figure 6 ADS5295 GUI 16 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 17: ...GA firmware of the TSW1400 capture card is automatically updated to match the operating mode selected Clicking the High Level Test tab accesses all serial registers Figure 7 ADS5295 GUI Plug In Tab The High Level Test tab contains five sub tabs Top Level Test Pattern Dig Sig Proc Channel Filter IN OUTP Map The default tab is the Top Level tab as shown in Figure 8 The Top Level tab contains four se...

Page 18: ...hen one of these registers such as DATA_RATE is updated The CUSTOM WRITE READ section allows manual programming of a serial register s data value given it s address In addition the current data value of any serial register can be read from the device by inputting it s address 18 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copy...

Page 19: ...www ti com ADS5295 GUI Plug In Tab 19 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 20: ...at every ADC code is generated incrementally Select Test Pattern tab In the TEST PATTERN MODES section select RAMP PATTERN in the Enable Pattern Mode drop down menu Note the RAMP PATTERN is applied internal to the device to all ADC channels simultaneously Figure 9 ADS5295 Time Domain Setup 20 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation...

Page 21: ...menu as shown in Figure 10 Figure 10 Time Domain Test Input the appropriate ADC Sampling Rate 80 MHz in the default configuration of ADS5295 EVM Press the Capture button 21 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 22: ...should be captured as shown below Figure 11 ADS5295 RAMP Test Pattern Capture 22 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 23: ... Speed Data Converter Pro GUI to verify that the captured RAMP is correct Figure 12 Graph Zoom Functions 23 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 24: ... every subsequent sample is an increment in ADC code as shown below Figure 13 ADS5295 RAMP Verification 24 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 25: ... eight ADC channels using the selection box shown in Figure 14 Figure 14 ADC Channel Selection 25 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 26: ...al generator to an ADC input capturing and analyzing performance Disable the RAMP PATTERN by setting the Enable Pattern Mode to None Figure 15 Disable RAMP PATTERN 26 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 27: ...hanges to the exact coherent frequency once the Auto Calculation box is checked Check the box labeled Auto Calculation of Coherent Frequencies Figure 16 Single Tone Test 27 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 28: ... operate at approximately 1 0 dBFS In this test setup the amplitude was set to 18 4 dBm Set the frequency of the signal generator to that shown in the ADC Input Target Frequency box 1 00219727M Change the window option to Hanning due to the fact that input signal and onboard CMOS clock are non coherent Pressing the Capture button returns the test result Repeat for Channels 2 through 8 Figure 17 Si...

Page 29: ...sistors R169 and R170 and remove two resistors R171 and R172 from J6 P1 TP_VP P1 is the 5 V power supply connector TP_VP is the test point for 5 V power supply JP4 Onboard 3 3 V Analog enables Set up as shown in Figure 2 is required to use onboard 3 3 V JP5 Onboard 1 8 V Digital enables Set up as shown in Figure 2 is required to use onboard 1 8 V JP6 Onboard 1 8 V Analog enables Set up as shown in...

Page 30: ...h Transformer J6 In default configuration R171 and R172 are already populated Default Through Amplifier Not J16 It is an alternative input for channel 8 Need to install two resistors R169 and Default R170 and remove two resistors R171 and R172 from J6 It uses TI THS4509 single ended to differential amplifier 30 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 S...

Page 31: ... Table 3 for details In Figure 19 the EVM uses an onboard single ended clock as the default option Figure 19 ADS5295EVM Default Clock Jumper Locations 31 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 32: ... JP18 1 2 Dia 3 External JP18 J4 and Connect external Clock source at SMA connector J4 Onboard Clock JP13 JP19 JP20 JP13 1 2 JP20 1 2 JP19 1 2 JP15 2 3 Dia 4 Buffer JP15 JP17 JP16 JP17 2 3 JP16 1 2 JP18 1 2 CDCLVP1102 U4 JP18 Differential This configures the onboard CMOS oscillator Clock Signal as clock input to buffer J8 JP19 JP20 JP15 JP19 2 3 JP20 1 2 JP15 2 3 JP17 2 3 Dia 5 JP17 JP16 JP18 JP16...

Page 33: ... 4 LED Indicators Reference Designator Power Supply Color LED_ 5V 5 V Green LED1 8VA 1 8 VA Off LED1 8VD 1 8 VD Off LED3 3VA 3 3 VA Orange 33 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 34: ...P22 VCM Common mode output pin 0 95 V output TP6 CDC_VTH Fixed voltage level 1 65 V TP_D0 SCLK Serial clock input TP_D1 SDA Serial data input TP_D2 SEN Serial enable chip select TP_D7 SDOUT Serial data output 34 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 35: ...gnator Description JP14 RESET Install to reset the device DUT1 manually JP12 PD Install to power down the device DUT1 manually 35 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 36: ...i com 10 EVM Schematics Figure 22 Schematic Sheet 1 of 9 36 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 37: ...EVM Schematics Figure 23 Schematic Sheet 2 of 9 37 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 38: ...ics www ti com Figure 24 Schematic Sheet 3 of 9 38 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 39: ...EVM Schematics Figure 25 Schematic Sheet 4 of 9 39 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 40: ...ics www ti com Figure 26 Schematic Sheet 5 of 9 40 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 41: ...EVM Schematics Figure 27 Schematic Sheet 6 of 9 41 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 42: ...ics www ti com Figure 28 Schematic Sheet 7 of 9 42 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 43: ...EVM Schematics Figure 29 Schematic Sheet 8 of 9 43 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 44: ...ics www ti com Figure 30 Schematic Sheet 9 of 9 44 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 45: ...0EB1H102K CAPACITOR SMT 0402 CER 1000pF 50V 10 X7R 1000pF Panasonic Yes C55 PCC1721CT ND 18 4 ECJ 0EB1H122K CAPACITOR SMT 0402 CER 1200pF 50V 10 X7R 1200pF Panasonic Yes C71 C72 C75 C76 PCC1722CT ND 19 2 ECJ 0EB1E181K CAP 180PF 25V CERAMIC X7R 0402 180pF Panasonic Yes C73 C74 PCC1705CT ND 20 2 ECJ 0EC1H390J CAP 39PF 50V CERAMIC 0402 SMD 39pF Panasonic Yes C29 C30 PCC390CQCT ND 21 5 ECJ 1V41E105M C...

Page 46: ...CONN HEADR BRKWAY 100 02POS STR CONN Header TE Connectivity Yes JP10 JP11 JP12 JP13 JP14 A32700 02 ND 49 10 9 146285 0 03 CONN HEADR BRKWAY 100 03POS STR CONN Header TE Connectivity Yes JP4 JP5 JP6 JP15 JP16 JP17 JP18 JP19 JP20 J A32700 03 ND P21 50 12 901 144 8 SMA COAX STRAIGHT PCB CURRENT P N IS 901 144 8RFX SMA Amphenol Yes J4 J5 J6 J7 J8 J10 J11 J12 J13 J14 J15 J16 ARFX1231 ND 51 76 0402YD104...

Page 47: ...out Figure 31 through Figure 42 illustrate the PCB layouts for the EVM Figure 31 ADS5295EVM Top Layer Assembly Drawing Top View 47 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 48: ...t www ti com Figure 32 ADS5295EVM Bottom Layer Assembly Drawing Bottom View 48 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 49: ...ted Circuit Board Layout Figure 33 ADS5295EVM Solder Paste Top 49 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 50: ...Board Layout www ti com Figure 34 ADS5295EVM Solder Paste Bottom 50 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 51: ...nted Circuit Board Layout Figure 35 ADS5295EVM Soldermask Top 51 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 52: ... Board Layout www ti com Figure 36 ADS5295EVM Soldermask Bottom 52 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 53: ...cuit Board Layout Figure 37 ADS5295EVM Bottom Layer Copper Bottom View 53 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 54: ...oard Layout www ti com Figure 38 ADS5295EVM Layer 5 Ground Plane 54 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 55: ...ircuit Board Layout Figure 39 ADS5295EVM Layer 4 Split Power Planes 55 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 56: ...d Layout www ti com Figure 40 ADS5295EVM Layer 3 Split Power Planes 56 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 57: ...d Circuit Board Layout Figure 41 ADS5295EVM Layer 2 Ground Plane 57 SLAU442 November 2012 ADS5295 8 Channel Analog to Digital Converter Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 58: ...rd Layout www ti com Figure 42 ADS5295EVM Top Layer Copper Top View 58 ADS5295 8 Channel Analog to Digital Converter Evaluation Module SLAU442 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Page 59: ...ency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio frequency interference Operation of the equipment 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 t...

Page 60: ... its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this l...

Page 61: ...er you obtained the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to this product Also please do not transfer this product unless you give the same notice above to the transferee Please note that if you could not follow the instructions above you will be subject to penalties of Radio Law of Japan Texas Instruments Japan Limited address 24 1 Nishi Shi...

Page 62: ... property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and intended loads Any loads applied outside of the specified output range may result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Plea...

Page 63: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

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