Texas Instruments ADS126xEVM-PDK User Manual

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This user's guide describes the operation and use of the ADS126x evaluation module (ADS126xEVM).

The

ADS1262

and

for precision industrial applications. The performance demonstration kit (PDK) is intended for prototyping

and evaluating the ADS1262 and ADS1263. The

card, MMB0 motherboard, A-to-B USB cable, and supporting software.

This document includes a detailed description of the hardware and software, bill of materials, and

schematic for the ADS126xEVM.

Throughout this document, the terms ADS126xEVM, demonstration kit, evaluation board, evaluation

module, and EVM are synonymous with the ADS126xEVM-PDK.

The following EVM-compatible devices and related documents are available through the Texas

Instruments website at www.ti.com.

E2E is a trademark of Texas Instruments, Inc.

Windows XP, Windows 7 are trademarks of Microsoft Corporation.

X2Y is a registered trademark of X2Y Attenuators, LLC.

All other trademarks are the property of their respective owners.

SBAU206A – April 2015 – Revised December 2015

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ADS126xEVM-PDK

ADS1263

are low-noise, low-drift 32-bit delta-sigma analog-to-digital converters (ADC)

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Summary of Contents for Texas Instruments ADS126xEVM-PDK

Page 1 This document includes a detailed description of the hardware and software, bill of materials, and schematic for the ADS126xEVM. Throughout this document, the terms ADS126xEVM, demonstration kit, evaluation board, evaluation module, and EVM are synonymous with the ADS126xEVM-PDK. The following EVM-compatible devices and related documents are available through the Texas Instruments website at www.ti.com.
Page 2 ....................... Tab 9: Register Map ..................... Tab 10: Extras / About ...................... Data Monitor Window ....................Status Byte Error Pop-up ........................Schematic ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 3 Factory Default Settings ......................Critical Connections ....................J1, Serial Interface Header ................... ADS126x Analog Input Pin Functions ..................ADS126xEVM Bill of Materials SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 4 ADS126xEVM Overview The ADS126xEVM-PDK is an evaluation module using the MMB0 hardware and ADCPro software platform for evaluation of the ADS1262 and ADS1263 (both referenced to as ADS126x in this document). The standalone ADS126xEVM is useful for prototyping designs and firmware.
Page 5 The JP2, JP3, and JP5 jumpers are not required. Theses jumpers modify the analog input connections for biasing and ratiometric measurements. See Section 2.6 for more details. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 6 AIN6-AIN7 Analog inputs Analog inputs Channels 8-9 J4.2,1 AIN8, AIN9 Thermocouple or analog inputs Channel 10 J3.10 AINCOM Analog or common-reference input ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 7 ADS126xEVM supplies. Figure 5 shows the JP4 jumpers, switch S2, and the power-supply test points. Figure 5. Power-Supply Circuitry (Default Jumper Settings) SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 8 NOTE: Use an external power supply that complies with applicable regional safety standards; for example, UL, CSA, VDE, CCC, PSE, and so forth. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 9 ADS126xEVM. Open jumper (J12) USB connector ± Shorted jumper (J13B) Power Input Figure 7. MMB0 Configuration for a Unipolar-Bench Power Supply SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 10 MMB0 jumper J13A has no effect on the circuit behavior of the ADS126xEVM as long as no other supply is connected to +VA. Do not short jumper J13A when another supply is connected to +VA. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 11 The external clock source must have a frequency between 1 MHz and 8 MHz, and have a peak-to-peak amplitude equal to the DVDD supply voltage. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 12 When probing SPI communications, check the signal integrity near the receiving end (that is, probe DIN at the ADS126x input, not at the SPI controller output). ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 13 DM f-3dB = 1.59 kHz Cold Junction = GND Sensor Bias AINCOM Jumper Figure 10. Analog Input Support Circuitry on the ADS126xEVM SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 14 GPIO voltages are referenced to the analog power supply (AVDD and AVSS); therefore, the GPIOs must use 5-V logic. The GPIOs are useful for control of external devices, as well as reading external logic signals. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 15 RTD, use JP1 to replace the IN4 connection. For a 4-wire RTD, remove the IN6 to IN3 jumper wire, remove the IN7 to COM jumper wire, and connect the additional RTD wire to COM. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 16 In addition to the board space saved by using X2Y, these capacitors have lower ESL and excellent common-mode capacitor matching. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 17 6. After powering up the MMB0 and ADS126xEVM, power up any other external circuitry. 7. Run ADCPro and follow the steps in Section 3.3 to communicate with the ADS126xEVM. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 18 MMB0, refer back to Section 3.1 Section 3.2 for the required drivers and hardware connections. Figure 14. EVM Connection Status ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 19 6. Use the test plugin functions as described in the ADCPro User's Guide, SBAU128, to analyze the ADC conversion data. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 20 ADC inputs. Remember to set a proper common-mode input voltage by applying an external midsupply voltage or by using the VBIAS function on AINCOM, as shown in Figure 1 Input MUX Figure 17. Tab 1 Settings ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 21 The internal reference can be disabled when an external referenced is used; however, the internal reference must be enabled to use the IDACs. The ADC2 Reference Settings are only visible when an ADS1263EVM is connected. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 23 NOTE: The software does not allow for simultaneous GPIO, Test DAC, IDAC, or VBIAS functions to be enabled on the same pin. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 24 NOTE: The software does not allow for simultaneous GPIO, Test DAC, IDAC, or VBIAS functions to be enabled on the same pin. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 25 NOTE: The software does not allow for simultaneous GPIO, Test DAC, IDAC, or VBIAS functions to be enabled on the same pin. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 26 ADC2 is ready. As a result of this behavior, ADC2 data are lost if this requirement is not satisfied. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 27 Offset can be changed from uV to mV as needed. Calibration is not required; however, calibration improves overall ADC accuracy by about an order of magnitude. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 28 File button. Use this register map text file to document a particular setup. Reference this text file during development or support on the E2E™ Precision Data Converter Forum. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 29 MMB0 memory, then transferred to ADCPro using USB, and finally processed in ADCPro before it is displayed. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 30 Switching to the View Data window is useful to see when this error first appeared in the collected data. Figure 28. Status Byte Error Pop-up ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 31 RES, 100k Ohm, 5%, 1/10W, 0603 Panasonic ERJ-3GEYJ104V 3.9 kOhms RES, 3.9K Ohm, 1/10W, 0.05%, 0603 Susumu RG1608N-392-W-T1 These components are not installed. SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 32 24AA256-I/ST Technology CRYSTAL, 7.3728 MHz, 18 pF, T/H ECS Inc. ECS-73-18-10X Installed for the ADS1262EVM. The ADS1263IPW is installed for the ADS1263EVM. ADS126xEVM-PDK SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 33 -5VA DGND Sensor Bias AINCOM AGND Jumper +1.8VD Top and Bottom Side +3.3VD (Bottom Connects to MMB0) +5VD DAUGHTER-POWER Figure 29. Schematic SBAU206A – April 2015 – Revised December 2015 ADS126xEVM-PDK Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 34 Added text to clarify additional bench supply NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Revision History SBAU206A – April 2015 – Revised December 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
Page 35 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
Page 36 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Page 37 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】開発キットの中には技術基準適合証明を受けていないものがあります。技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。日本テキサス・インスツルメンツ株式会社東京都新宿区西新宿６丁目２４番１号西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER 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.
Page 38 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 © 2015, Texas Instruments Incorporated...
Page 39 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
Page 40 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments ADS1262EVM-PDK ADS1263EVM-PDK...

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