Terminal Blocks And Test Points; Table 2-1. Analog Input Terminal Blocks (J1 - J5); Table 2-2. Key Voltage Test Points - Texas Instruments ADS131B26Q1EVM-PDK User Manual

Analog Interface

2.1 Terminal Blocks and Test Points

Analog inputs to the EVM can be connected to either terminal block associated with each ADC channel. The
screw terminal blocks (J1 through J5) can interface directly with the leads of an external source.
the supported input options.
An input must not be applied such that the voltage on the input pins of the ADS131B26-Q1 exceeds the absolute
maximum ratings. For more details, see the
Terminal
Block Pin
1 Unipolar voltage input
2 Unipolar voltage input
3 Differential voltage, positive input or
general-purpose digital input/output
J1
4 Differential voltage, negative input or
general-purpose digital input/output
5 Differential current, positive input
6 Differential current, negative input
1 AGND
J2
2 AGND
Differential voltage, negative input or
1
general-purpose digital input/output
2 Differential voltage, positive input or
general-purpose digital input/output
J3
3 Differential current, negative input
4 Differential current, positive input
5 Unipolar voltage input
6 Unipolar voltage input
1 Unipolar voltage input
2 Unipolar voltage input
3 Unipolar voltage input
J4
4 Unipolar voltage input
5 Unipolar voltage input
6 Unipolar voltage input
1 Unipolar voltage input
2 Unipolar voltage input
3 Unipolar voltage input
J5
4 Unipolar voltage input
5 Unipolar voltage input
6 Unipolar voltage input
Test Point
TP1 Probe VNA or GPIO0A
TP2 Probe VPB or GPIO0B
TP3 Ground clip for scope / multimeter
TP4 Ground clip for scope / multimeter
TP5 Probe VNA or GPIO1A
TP6 Probe VNB or GPIO1B
6 ADS131B26Q1EVM-PDK Evaluation Module
Table 2-2 lists key test points.
ADS131B26-Q1 data

Table 2-1. Analog Input Terminal Blocks (J1 - J5)

Function

Table 2-2. Key Voltage Test Points

Function Input Range
–10 V to 10 V (Gain = 4)
–10 V to 10 V (Gain = 4)
Shorted to AGND (default)
Shorted to AGND (default)
Copyright © 2022 Texas Instruments Incorporated
sheet.
Input Range
0 V to 10 V (Gain = 1)
0 V to 1.25 V (Gain = 1)
–10 V to 10 V (Gain = 4)
Shorted to AGND (default)
0 mA to 12.5 mA (Gain = 1)
Shorted to AGND (default)
－
－
Shorted to AGND (default)
–10 V to 10 V (Gain = 4)
Shorted to AGND (default)
0 mA to 12.5 mA (Gain = 1)
0 V to 1.25 V (Gain = 1)
0 V to 10 V (Gain = 1)
0 V to 10 V (Gain = 1)
–10 V to 10 V (Gain = 4)
–10 V to 10 V (Gain = 4)
–8.5 V to 10 V (Gain = 2)
–8.5 V to 10 V (Gain = 2)
–8.5 V to 10 V (Gain = 2)
–8.5 V to 10 V (Gain = 2)
–10 V to 10 V (Gain = 4)
–10 V to 10 V (Gain = 4)
0 V to 10 V (Gain = 1)
VPA/GPIO0A
VPB/GPIO0B
－
AGND, AGNDA, and AGNDB
－
AGND, AGNDA, and AGNDB
VNA/GPIO1A
VNB/GPIO1B
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Table 2-1 lists
ADS131B26-Q1 Input Pins
V1A
V0A
VPA/GPIO0A
VNA/GPIO1A
CPA
CNA
AGND, AGNDA, and AGNDB
AGND, AGNDA, and AGNDB
VNB/GPIO1B
VPB/GPIO0B
CNB
CPB
V0B
V1B
V2B
V3B
V4B
V5B
V6B
V7B
V7A
V6A
V5A
V4A
V3A
V2A
ADS131B26-Q1 Input Pins
SBAU413 – OCTOBER 2022
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