Differential amp for high common-mode voltage sensing
The AD629ARZ-R7 is a single-channel differential amplifier from Analog Devices, designed to reject high common-mode voltages while amplifying a small differential signal — a common requirement in current-sense and motor-phase monitoring circuits where the sense resistor sits above the supply rail.
Supply range and quiescent budget
The 200 µV typical input offset voltage is trimmed at the factory, so no external nulling potentiometer is needed for most 1% accuracy current-sense applications.