Specifically designed for precise acquisition of loop current, amplifying minute voltage differences in the sampling resistor for ADC current detection.

Two types:

1. High-side current detection: Connected in series with the positive terminal of the power supply to detect the total input current;

2. Low-side current detection: Connected in series with the ground loop to detect the load output current;

Functions:

- Amplifies millivolt-level sampling voltage and suppresses common-mode high voltage;

- Low offset and low temperature drift, accurate measurement of both large and small currents;

- Used for power supply constant current control, battery charge/discharge detection, motor overcurrent protection, and LED current closed-loop control.