Datasheet
Table Of Contents
- INA231EVM Evaluation Board and Software Tutorial
- 1 Overview
- 2 INA231EVM Hardware Setup
- 3 INA231EVM Hardware
- 4 INA231EVM Software Setup
- 5 INA231EVM Software Overview
- 6 INA231EVM Documentation
- Important Notices
GND
BUS
V
I
High-Side
Shunt
Low-Side
Shunt
Load
Power Supply
(0 V to 28 V)
V
IN+
V
IN-
INA231EVM Hardware
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3.6.5 VIN+ and VIN– Input filter (R1, R2, and C1)
The INA231EVM has an optional input filter to remove high-frequency noise from the inputs VIN+ and
VIN–. The default values for R1 and R2 are 0-Ω. Figure 9 shows the typical setup, which is recommended
for basic INA231 evaluation.
Figure 9. Typical Filter Setup
3.6.6 Shunt Monitor Configuration and Terminal Blocks T3 and T4
The INA231 is generally used in either a high-side or low-side shunt configuration, as shown in Figure 10.
Terminal block T3 represents V
BUS
and ground, while terminal block T4 represents VIN+ and VIN–.
Depending on the user’s needs, either of these configurations may be used without making any changes
to the INA231EVM board or software.
Figure 10. INA231 Shunt Configurations
10
INA231EVM Evaluation Board and Software Tutorial SBOU128–February 2013
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