Texas Instruments ADS1271EVM, User Manual, Page: 5 / 24

www.ti.com
Quick Reference
Figure 2. Default Software Screen
3 Quick Reference
Table 3 provides a quick summary of the connections required for operation of the EVM as a stand-alone
board.
Table 3. Critical Connections
Pin
Function Header/Pin Description
Name
SCLK J2.5 CLKR SPI Serial Clock
DIN J2.13 (Top) DR SPI Data Input to ADC (MOSI)
SPI DOUT J2.13 (Bottom) DR SPI Data Output from ADC (MISO)
J2.9 Top FSOUT
SPI new conversion indication (see
DRDY/FSYNC
Section 5.6.2 )
J2.9 Bottom FSR
1.8V J3.7 +1.8VD 1.8V supply for ADC DVDD (option)
3.3V J3.9 +3.3VD 3.3V supply for ADC DVDD (option)
5.0V J3.3 +5VA 5.0V supply for ADC AVDD
Positive supply for buffers (+15V)
AVDD (EVM supply) J3.1 +VA
Power (only required when using analog buffers)
Negative supply for buffers (-15V)
AVSS (EVM supply) J3.2 -VA
(only required when using analog buffers)
DGND J3.5 DGND Digital ground from MMB0
AGND J3.6 AGND Analog ground from MMB0
Analog Inputs Analog inputs and external reference J4/5 Various Analog inputs and external reference to
ADC
5 SBAU107C – November 2004 – Revised November 2014 ADS1271EVM and ADS1271EVM-PDK User's Guide
Submit Documentation Feedback
Copyright © 2004–2014, Texas Instruments Incorporated