Texas Instruments ADS1271EVM, User Manual, Page: 3 / 24

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Quick Start
2 Quick Start
This section provides a Quick Start guide to quickly begin evaluating the ADS1271EVM.
2.1 Default Jumper/Switch Configuration
Figure 1 shows the jumpers found on the EVM and locations of left , middle and right for switch settings
in the following discussion.
Figure 1. ADS1271EVM Default Configuration
Table 2 lists the jumpers and switches and the factory default conditions
Table 2. Default Jumper/Switch Configuration
Switch Default Position Switch Description
S1 Up Analog input from aux header (J4) connected to buffer
S2 Up Analog input from aux header (J5) connected to buffer
S3 Left 2.5V reference connection to CH2 reference
S4 Left Buffer connected to CH2 input
S5 Left 2.5V reference connection to CH1 reference
S6 Left Buffer connected to CH1 input
S7 Left Hardware control of Format is floating
J6 AV1 Installed AVDD connection for ADC1
DV1 Installed DVDD connection for ADC1
AV2 Installed AVDD connection for ADC2
DV2 Installed DVDD connection for ADC2
+1.8V Uninstalled Do not connect 1.8V to DVDD (misc ICs and switches)
+3.3V Installed Connect 3.3V to DVDD (misc ICs and switches)
AGND Uninstalled Do not connect AGND to EVM ground
DGND Installed Connect DGND to EVM ground
J7 Installed 1-2 (FMT) SPI Format controlled by software or hardware (S7)
Installed 3-4 (MODE) ADS1271 MODE pin controlled via software
3 SBAU107C – November 2004 – Revised November 2014 ADS1271EVM and ADS1271EVM-PDK User's Guide
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