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User's Guide
SBAU107B – November 2004 – Revised February 2008
ADS1271EVM & ADS1271EVM-PDK User's Guide
This user's guide describes the characteristics, operation, and use of the ADS1271EVM, both by itself and
as part of the ADS1271EVM-PDK. This EVM is a 24-bit analog-to-digital converter evaluation module. A
complete circuit description, schematic diagram, and bill of materials are also included.
The following related documents are available through the Texas Instruments web site at www.ti.com .
EVM-Compatible Device Data Sheets
Literature
Device Number
ADS1271 SBAS306
OPA350 SBOS099B
OPA1632 SBOS286
REF1004 SBVS002
REF3125 SBVS046A
SN74AVC1T45 SCES530C
SN74AVC2T45 SCES531D
SN74LVC1G125 SCES223L
SN74LVC2G66 SCES325G
SN74LVC2G157 SCES207I
TPS71550 SLVS338H
Contents
1 EVM Overview ............................................................................................................... 2
2 Analog Interface .............................................................................................................. 2
3 Digital Interface .............................................................................................................. 3
4 Power Supplies .............................................................................................................. 4
5 EVM Operation ............................................................................................................... 6
6 Kit Operation ................................................................................................................. 8
7 EVM Bill of Materials and Schematic .................................................................................... 12
List of Figures
1 ADS1271EVM Switch and Jumper Locations ............................................................................ 6
2 ADS1271EVM-PDK Block Diagram ...................................................................................... 9
3 Default Software Screen .................................................................................................. 10
List of Tables
1 Analog Interface Pinout (J1) ................................................................................................ 3
2 Auxiliary Analog Input 1 Pinout (J4) ....................................................................................... 3
3 Auxiliary Analog Input 2 Pinout (J5) ....................................................................................... 3
4 Digital Interface Pinout (J2) ................................................................................................. 4
5 Power Supply Pinout ........................................................................................................ 4
6 Reference Selection Options - S3 and S5 ................................................................................ 5
7 Buffer Amplifier Options - S1 and S2 ..................................................................................... 6
SBAU107B – November 2004 – Revised February 2008 ADS1271EVM & ADS1271EVM-PDK User's Guide 1
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