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User's Guide
ADS8688EVM-PDK Evaluation Module
Data Acquisition Products
This user's guide describes the operation and use of the ADS8688 evaluation module (EVM). The ADS8688 is a
16-bit, 500ksps, 8 channel multiplexed, single-supply, SAR ADC with bipolar input ranges. Operating on a single
5V the integrated analog front end can support ±10.24V input ranges with a ±20V over-voltage protection. The
performance demonstration kit (PDK) eases EVM evaluation with additional hardware and software for computer
connectivity through a universal serial bus (USB). The ADS8688EVM-PDK includes the ADS8688EVM as a
daughter card, Precision Host Adaptor (PHI) digital controller, and a A-to-B USB cable. This user's guide covers
circuit description, schematic diagram, and bill of materials for the ADS8688EVM daughter card.
SBAU230C – AUGUST 2014 – REVISED MARCH 2021
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ABSTRACT
ADS8688EVM-PDK
Table 1-1. Related Documentation
Device
ADS8688
OPA320
TPS7A4700
Copyright © 2021 Texas Instruments Incorporated
Literature Number
SBAS582
SBOS513
SBVS204
ADS8688EVM-PDK Evaluation Module
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Table of Contents
Related Manuals for Texas Instruments ADS8688EVM-PDK
Summary of Contents for Texas Instruments ADS8688EVM-PDK
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Page 1: Table 1-1. Related Documentation
(PDK) eases EVM evaluation with additional hardware and software for computer connectivity through a universal serial bus (USB). The ADS8688EVM-PDK includes the ADS8688EVM as a daughter card, Precision Host Adaptor (PHI) digital controller, and a A-to-B USB cable. This user's guide covers circuit description, schematic diagram, and bill of materials for the ADS8688EVM daughter card. -
Page 2: Table Of Contents
Table 7-1. Compatible Devices in the Family..........................12 Table 8-1. ADS8688EVM Bill of Materials..........................1 Trademarks All trademarks are the property of their respective owners. ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 3: Ads8688Evm-Pdk Overview
ADS8688EVM-PDK Overview 2 ADS8688EVM-PDK Overview Table 1-1 lists the related documents that are available for download from Texas Instruments at ADS8688EVM Features • Hardware and software required for diagnostic testing as well as accurate performance evaluation of the ADS8688 ADC •... -
Page 4: Evm Analog Interface
The ADS8688EVM is an evaluation module built to the TI Modular EVM system specifications. The EVM by itself has no microprocessor and cannot run software. Thus, the EVM is available as part of the ADS8688EVM-PDK kit that combines the ADS8688EVM as a daughter board with PHI controller using software as a graphical user interface (GUI). -
Page 5: Voltage Reference, Aux Input, And Supply Decoupling
AUX_IN 49.9 AUX_GND DGND ADS8688IDBT 1000pF 49.9 AVDD 100nF OPA320AIDBVR 1.00k Figure 3-2. Voltage Reference, Aux Input, and Supply Decoupling SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 6: Digital Interface
ADS8688 for operation. The switch (S2) is a write protect and does not need to be changed for EVM operation. ID_PWR ID_PWR 100nF 10.0k BR24G32FVT-3AGE2 Figure 4-1. EEPROM for EVM ID ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: Power Supplies
6P4V1 3P2V APT2012LZGCK APT2012LZGCK 1P6V 1µF Green Green 0P8V 0P4V 0P2V 0P1V TPS7A4700RGWR Figure 5-1. Power Supplies, Regulators, and Indicators SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 8: Ads8688 Initial Setup
Accept the license agreements and follow the on-screen instructions shown in Figure 6-1 to complete the installation. Figure 6-1. ADS8688 Software Installation Prompts ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 9: Figure 6-2. Device Driver Installation Wizard Prompts
The ADS8688EVM requires the LabVIEW™ run-time engine and may prompt for the installation of this software, as shown in Figure 6-3, if not already installed. Figure 6-3. LabVIEW Run-Time Engine Installation SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 10: Figure 6-4. Ads8688Evm Gui Folder Post-Installation
ADS8688 Initial Setup www.ti.com Verify that C:\Program Files (x86)\Texas Instruments\ADS8688EVM is as shown in Figure 6-4 after these installations. Figure 6-4. ADS8688EVM GUI Folder Post-Installation ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Evm Operation
Figure 7-1. ADS8688EVM Hardware Setup and LED Indicators Select EVM GUI from start menu, or associated shortcut Figure 7-2. Launch the EVM GUI Software SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 12: Modifying Hardware And Using Software To Evaluate Other Devices In The Family
EVM connected has EEPROM. been updated to. Figure 7-4. Configure EEPROM and Software for the New Device ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 13: Evm Gui Global Settings For Adc Control
Auto mode will scan the selected channels below. Manual allows selection of one channel. Figure 7-5. EVM GUI Global Input Controls SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 14: Time Domain Display
Select the channels to display. Time domain selected here. Selects the channel for the statistical summary. Figure 7-6. Time Domain Display Tool Options ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 15: 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 7-7. Spectral Analysis Tool SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 16: Histogram Display
7-8, the histogram corresponding to a DC input is displayed on clicking the Capture button. Figure 7-8. Histogram Analysis Tool ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 17: Bill Of Materials, Schematics, And Layout
Q200 Grade 0, 0603 R2, R3 6.65k CRCW04026K65FKED Vishay-Dale RES, 6.65 k, 1%, 0.063 W, AEC- 0402 Q200 Grade 0, 0402 SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 18 R01, R11, R21, R31, R41, 49.9k CRCW060349K9FKEA Vishay-Dale RES, 49.9 k, 1%, 0.1 W, AEC- 0603 R51, R61, R71 Q200 Grade 0, 0603 ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 19: Board Layout
The board layouts is not to scale. This figure is intended to show how the board is laid out and is not intended to be used for manufacturing ADS8688EVM PCBs. Botom Figure 8-1. ADS8688EVM PCB SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 20: Schematic
Ain7- Ain3+ Ain7+ Ain3- TSW-104-07-G-D TSW-104-07-G-D Ain4+ Ain0- Ain4- Ain0+ Ain5+ Ain1- Ain5- Ain1+ TSW-104-07-G-D TSW-104-07-G-D Figure 8-2. Input Filter ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 21: Figure 8-3. Adc And Digital Interface
AGND AUX_IN 49.9 AUX_GND DGND ID_PWR 1000pF ADS8688IDBT 49.9 QTH-030-01-L-D-A-K-TR AVDD 100nF OPA320AIDBVR 1.00k Figure 8-3. ADC and Digital Interface SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 22: Figure 8-4. Power And Eeprom
APT2012LZGCK 1P6V 1µF Green Green 0P8V 0P4V 0P2V 0P1V TPS7A4700RGWR ID_PWR ID_PWR 100nF 10.0k BR24G32FVT-3AGE2 Figure 8-4. Power and EEPROM ADS8688EVM-PDK Evaluation Module SBAU230C – AUGUST 2014 – REVISED MARCH 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 23: Revision History
Changed Board Layouts section to show a PCB layer image instead of a top and a bottom image....19 • Changed ADC and Digital Interface figure......................20 SBAU230C – AUGUST 2014 – REVISED MARCH 2021 ADS8688EVM-PDK Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 24 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 25 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 26 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 27 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 28 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 29 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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