Sbau200C - June 2012 - Revised April 2020; Performance Demonstration Kit For The Ads131E08; Analog Supply Configurations; Digital Supply Configurations (Dvdd And Dgnd) - Texas Instruments ADS131E08EVM-PDK User Manual

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The front-end board must be properly configured in order to achieve the various power-supply schemes.
The default power-supply setting for the ADS131E08EVM is a bipolar analog supply of ±2.5 V, and there
are onboard options to switch to a unipolar analog supply of +3 V. The digital supply (DVDD) is selectable
to either +3.3 V or +1.8 V.
supply scheme. Table 4
shipped with the analog supply set to ±2.5 V and digital supplies set to 3.3 V.
AVDD and AVSS
JP7
JP1
U6
U8
U7
R61
R62
R59
R60
C48, C54, C59
SBAU200C – June 2012 – Revised April 2020
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Table 3 shows the board and component configurations for each analog power-
shows the board configurations for the digital supply. Note that the EVM is
Table 3. Analog Supply Configurations
Unipolar Analog Supply
3 V
1-2
2-3
TPS73230
Don't care
Don't care
Don't care
Don't care
Don't care
Don't care
Not installed
Table 4. Digital Supply Configurations (DVDD and
DGND)
DVDD 3.3 V
JP11
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ADS131E08EVM Daughter-Card Hardware Overview
5 V ±1.5 V
1-2 2-3
2-3 1-2
TPS73250 Don't care
Don't care TPS73201
Don't care TPS72301
Don't care 21 kΩ
Don't care 78.7 kΩ
Don't care 23.3 kΩ
Don't care 95.3 kΩ
Not installed Not installed
1.8 V
2-3 1-2

Performance Demonstration Kit for the ADS131E08

Bipolar Analog Supply
±2.5 V
2-3
1-2
Don't care
TPS73201
TPS72301
47.5 kΩ
43.2 kΩ
49.9 kΩ
46.4 kΩ
Not installed
11