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User's Guide
ADS127L11EVM-PDK Evaluation Module
Art Kay
This user's guide describes the characteristics, operation, and use of the
This kit is an evaluation platform for the ADS127L11, which is a 24-bit, high-speed, wide-bandwidth, delta-sigma
(ΔΣ) analog-to-digital converter (ADC). The ADS127L11 offers excellent ac and dc performance, along with
multiple internal digital filter options, making the device useful for a wide variety of data acquisition applications.
The ADS127L11EVM eases the evaluation of the device with hardware, software, and computer connectivity
through the universal serial bus (USB) interface. This user's guide includes complete circuit descriptions,
schematic diagrams, and a bill of materials. Throughout this document, the abbreviation EVM and the term
evaluation module are synonymous with the ADS127L11EVM.
1 EVM Overview.........................................................................................................................................................................
1.1 ADS127L11EVM Kit...........................................................................................................................................................
Board......................................................................................................................................................4
1.3 ADS127L11EVM-PDK-GUI Unsupported Features...........................................................................................................
Interface.............................................................................................................................................................5
Options.................................................................................................................................................5
2.3 ADC Input Drive Amplifiers................................................................................................................................................
2.4 VCOM Buffer......................................................................................................................................................................
Reference...............................................................................................................................................7
2.6 External Voltage Reference...............................................................................................................................................
2.7 Clock Tree..........................................................................................................................................................................
Interface.....................................................................................................................................................................10
(SPI)........................................................................................................................................................10
4 Power Supplies.....................................................................................................................................................................
4.2 Low Dropout Regulator (LDO).........................................................................................................................................
5 ADS127L11EVM Software Installation................................................................................................................................
6 EVM Operation......................................................................................................................................................................
6.1 Connecting the Hardware................................................................................................................................................
SBAU351 - APRIL 2021
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Decoupling.....................................................................................................................................5
EEPROM........................................................................................................................................10
Configuration...............................................................................................................................11
Copyright © 2021 Texas Instruments Incorporated
ABSTRACT
ADS127L11
Table of Contents
evaluation module (EVM).
ADS127L11EVM-PDK Evaluation Module
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Summary of Contents for Texas Instruments ADS127L11EVM-PDK
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Page 1: Table Of Contents
4 Power Supplies..................................4.1 Power Connection and Configuration..........................11 4.2 Low Dropout Regulator (LDO)............................5 ADS127L11EVM Software Installation..........................6 EVM Operation..................................6.1 Connecting the Hardware..............................SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 2 Schematics..................................26 8 References.................................... Trademarks Microsoft ® and Windows ® are registered trademarks of Microsoft Corporation. All trademarks are the property of their respective owners. ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 3: Evm Overview
ADS127L11EVM PHI Board xx xx xx xx ADS127L11 Signal Source Included in kit Figure 1-1. System Connection for Evaluation SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 4: Ads127L11Evm Board
CONFIG2_REG; bits 4:3, START_MODE, default 00b, only start and stop conversions are supported • CONFIG4_REG; bit 2, SPI_CRC, default 0b, CRC not supported • CONFIG4_REG; bit 0, STATUS, default 0b, status readback not supported ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 5: Evm Analog Interface
10.0 TP12 ADC.RESET CLKIN AVSS AVSS 10.0 RESET DGND AVSS 100nF ADS127L11PW 100k 100k REFP IOVDD 100nF REFN Figure 2-1. ADS127L11 Connections and Decoupling SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 6: Adc Input Drive Amplifiers
C0G/NP0 AVSS VMAMP AINN 0R44 10.0 1.00k 0R67 0R50 0.1% 427Ohm for Filter AINN 390pF C0G/NP0 10.0 1.00k 0.1% Figure 2-2. ADC Drive Amplifier ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: Vcom Buffer
REFP AVDD1 REFP OUT_F OUT_S REFN AVSS VrefIN 10µF GND_S 22µF REFN FILT GND_F 0.047 REF6225IDGKR 120k AVSS 1µF Figure 2-4. Onboard Voltage Reference SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 8: External Voltage Reference
AVSS 100nF 0R56 REFNb REFN 37.4 1.00k OPA192IDBVR 10µF 1µF AVSS AVSS AVSS 100nF AVSS 0R59 0R60 Figure 2-5. External Reference Connection and Buffer ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 9: Clock Tree
SMA connector (J14). The default position for jumper (JP6) 1-2 selects the local 25-MHz oscillator (Y1). The ADS127L11EVM-PDK-GUI software by default uses the 24-MHz PHI clock source, but can select the board clock source, 25-MHz (Y1) oscillator, or SMA connector (J14). -
Page 10: Digital Interface
ADS127L11 for operation. The jumper (JP1) is a write protect and does not need to be changed for EVM operation. EVM_ID_PWR EVM ID EEPROM EVM_ID_PWR EVM_ID_PWR 100nF 10.0k EVM_ID_SCL EEPROM_EN 100nF EVM_ID_SDA BR24G32FVT-3AGE2 Figure 3-2. EEPROM for EVM ID ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Power Supplies
IOVDD 0R81 MMSZ4703T1G MMSZ4703T1G EVM/External Power AVDD2 AVDD1 +Vin -Vin IOVDD MMSZ4690T1G MMSZ4690T1G 5.6V 5.6V MMSZ4690T1G 5.6V AVSS Figure 4-1. Power Connection and Configuration SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 12: Low Dropout Regulator (Ldo)
-2.5V Analog LDO -Vin -2.5V 0R85 -Vin 11.3k MMSZ4683T1G 0.01µF 10uF NR/SS 10uF 10.0k 0.01µF TPS7A3001DRBR Figure 4-2. 5.5 V to 5 V LDO ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 13: Ads127L11Evm Software Installation
As a part of the ADS127L11 EVM GUI installation, a prompt with a Device Driver Installation appears on the screen, as shown in Figure 5-2. Click Next to proceed. Figure 5-2. Software Installation and Prompts SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 14 The ADS127L11 EVM requires the LabVIEW™ run-time engine and may prompt for the installation of this software, as shown in Figure 5-3, if not already installed. Figure 5-3. LabVIEW Run-Time Engine Installation ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 15: Evm Operation
Figure 6-1. Connecting the Hardware to the ADS127L11 Select EVM GUI from start menu, or associated shortcut. Figure 6-2. Launch the EVM GUI Software SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 16: Optional Connections To The Evm
¡ ¢ ¥ © reference power connec on clock. connec o ns connec ¤ Figure 6-3. Optional Connections to the EVM ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 17: Evm Gui Global Settings For Adc Control
ADC register settings. The registers can be used to set the different device modes such as filter settings and power settings. Figure 6-4. EVM GUI Global Settings for ADC Control SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 18: Time Domain Display
Switching pages to any of the Analysis tools described in the subsequent sections causes calculations to be performed on the same set of data. Figure 6-5. Time Domain Display ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 19: Frequency Domain Display
24-bit ADC. The None option corresponds to not using a window (or using a rectangular window) and is not recommended. Figure 6-6. Frequency Domain Display SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 20: Histogram Display
As shown in Figure 6-7, the histogram corresponding to a dc input is displayed on clicking the Capture button. Figure 6-7. Histogram Display ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 21: Bill Of Materials, Schematics, And Layout
Cable, USB-A to 102-1092- micro USB-B, 1 m CnC Tech BL-00100 - Kitting item Machine Screw H2, H3 RM3X4MM 2701 APM HEXSEAL Pan PHILLIPS M3 SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 22 0603 Vishay-Dale Q200 Grade 0, KEAHP 0603 RES, 100 k, 1%, R19, R20, R68, CRCW0603100KF 100k 0.1 W, AEC-Q200 0603 Vishay-Dale Grade 0, 0603 ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
- Page 23 U4, U6, U7 DBV0005A OPA192IDBVR 4.5 to 36 V, -40 to 125 degC, 5-Pin SOT-23 (DBV), Green (RoHS & no Sb/Br), Tape and Reel SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
- Page 24 -36V, -200mA, Ultra-Low-Noise, High-PSRR, Low- DRB0008A TPS7A3001DRBR Texas Instruments Dropout (LDO) Linear Regulator, DRB0008A (VSON-8) Oscillator, 25 SG-210STF SMD, 2x2.5mm Epson MHz, SMD 25.0000ML3 ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 25: Board Layouts
Bill of Materials, Schematics, and Layout 7.2 Board Layouts Figure 7-1 shows the PCB layouts for the ADS127L11 EVM. Figure 7-1. PCB Layouts for the ADS127L11 EVM SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 26: Schematics
IOVDD 10uF EVM_ID_PWR EVM_ID_SDA 100nF EVM_ID_SCL REFN RESET 10uF START/SYNC SCLK SDO/DRDY DRDY TSW-109-07-G-D MCLK_IN MCLK_OUT Figure 7-2. ADS127L11EVM ADC Connections and Reference Schematic ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 27 MMSZ4703T1G MMSZ4703T1G AVSS 1µF 10µF TSW-102-07-G-S 100nF AVSS AVSS AVDD1 10.0k 0.033µF 1.00k Figure 7-3. ADS127L11EVM Input Amplifier, VCOM buffer, and External Reference Schematic SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
- Page 28 TSW-103-07-G-S 10pF 100nF 100k SG-210STF 25.0000ML3 /OSC_EN EVM/EXT CLK PHI CLK TSW-103-07-G-S 10pF PHI Clock ADC.MCLK_OUT Figure 7-4. ADS127L11EVM Clock Tree and Power Schematic ADS127L11EVM-PDK Evaluation Module SBAU351 – APRIL 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 29: References
References 8 References • Texas Instruments, ADS127L11 24-Bit, Wide-Bandwidth Analog-to-Digital Converter data sheet SBAU351 – APRIL 2021 ADS127L11EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 30 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 31 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 32 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 33 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 34 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
- Page 35 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products.IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...
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