Texas Instruments ADS833 EVM Series User Manual

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This user's guide describes the characteristics, operation, and use of the ADS833xEVM. This evaluation

model (EVM) is an evaluation board for the

or eight-channel, successive approximation register (SAR) analog-to-digital converter (ADC). The EVM

allows evaluation of all aspects of the ADS8331 and ADS8332. Complete circuit descriptions, schematic

diagrams, and bills of material are included in this document.

The following related documents are available for download through the Texas Instruments web site at

http://www.ti.com.

C is a trademark of NXP Semiconductors.

All other trademarks are the property of their respective owners.

SBAU176A – August 2010 – Revised May 2011

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ADS833xEVM User's Guide

ADS833xEVM

ADS8331

and the ADS8332, a high-performance, 16-bit, four-

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Summary of Contents for Texas Instruments ADS833 EVM Series

Page 1 ADS8331 and ADS8332. Complete circuit descriptions, schematic diagrams, and bills of material are included in this document. The following related documents are available for download through the Texas Instruments web site at http://www.ti.com.
Page 2: Table Of Contents
Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with the ADS833xEVM. The abbreviations ADS833x or ADS8331/2 refer to the ADS8331 and ADS8332, unless otherwise indicated. SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 3: Analog Interface
IN6 analog input (ADS8332 only) J1.16 NC/IN7 IN7 analog input (ADS8332 only) J1.18 Analog ground connection J1.20 REF+ External reference source input (positive) SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 4: Digital Interface
EVM may have weak pull-up resistors to provide default settings for the pins. See the ADS8331 and ADS8332 product data sheet for complete details on these pins. SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 5: Power Supplies
+5VD to power the ADC VBD supply. The +3.3VD supply is also an option. Voltage Reference The ADS833xEVM comes with an onboard Texas Instruments' REF5040. The reference voltage signal can either be connected directly to the ADS8331/32 or filtered through a OPA350 unity gain buffer before connection to the ADC.
Page 6: Evm Operation
DSP or microcontroller interface board, such as the 5-6K Interface HPA-MCU Interface boards available from Texas Instruments. For a list of compatible interface and/or accessory boards for the EVM or the ADS8331/32, see the relevant product folder on the TI web site.
Page 7: List Of Configured Jumpers
Connect CONVST signal to J2 header JP12 Installed Route reference signal from OPA350 to ADC Pushbutton switch to control Reset signal SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 8: Schematics And Layout
C9, C10, C14, C19, C20, C21, C29, R9, R10, R11, R12, R21, R23, R24, TP4, TP5, TP6, TP8, TP9, JP1, JP2, JP10, JP11, U6 SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 9 Texas REF5040AID Instruments IC Op Amp GP R-R 38MHZ SGL 8SOIC Texas OPA350UA Instruments 0.100 Shunt - black Samtec SNT-100-BK-T SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 10: Ads833Xevm: Top Layer
Schematics and Layout www.ti.com Figure 3. ADS833xEVM: Top Layer Figure 4. ADS833xEVM: Bottom Layer SBAU176A – August 2010 – Revised May 2011 ADS833xEVM User's Guide Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 11 Page .......................... • Updated Table 3 NOTE: Page numbers for previous revisions may differ from page numbers in the current version. SBAU176A – August 2010 – Revised May 2011 Revision History Submit Documentation Feedback Copyright © 2010–2011, Texas Instruments Incorporated...
Page 12 Revision History ECN Number Approved 0.1uF OPA211AID 0.1uF CH7_FLT REF+ 34.8 750pF +IN7/NC CH6_FLT +IN6/NC VCC_D CLKX +IN5/NC SCLK +IN4/NC FS/CS Ch5_FLT +IN3 4.99k 4.99k +IN2 +IN1 EOC/INT/CDI Ch4_FLT +IN0 /CONVST /RESET TOUT Ch3_FLT /RESET REF+ ADS833X DGND REF- VCC_D PUSHBUTTON Ch2_FLT +5VA...
Page 13 Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
Page 14 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.

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