Current Sense Amplifiers Microchip Technology Current Sense Amplifiers are used to accurately measure a dynamic current in a wide variety of applications. These applications include monitoring or charging batteries, creating a current-controlled feedback loop for a power supply or motor, or simply monitoring current levels for safety reasons. These current sense amplifiers provide a high-flexibility, high-precision solution to maximize efficiency and reliability with a zero-drift architecture. This makes designs more robust across a wide range of environmental conditions and applications.