SBOU309 august 2023 INA220
This section describes the INA220 and supporting components.
U1 is the INA220 current-sensing device. C1 and C2 are bypass capacitors that are placed near the sensor to help mitigate power supply noise and provide current quickly to the device when needed. LED D1 with current limiting resistor R4 are used to indicate when the EVM is powered on.
The device pins can be monitored directly through the test points TP1 – TP11. Note that there are two extra test points on GND for convenience.