INA254 Zero-Drift Current Sense Amplifier

Texas Instruments INA254 Zero-Drift Current Sense Amplifier is a voltage-output, current sense amplifier with a 400µΩ integrated shunt resistor. The INA254 monitors bidirectional currents over a wide common-mode range from –4V to +80V, independent of the supply voltage. Three fixed gains are available: 20mV/A, 40mV/A, and 75mV/A. Integrating the precision resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy. It also achieves an ultra-low temperature drift performance of ±45ppm/°C (maximum) and an optimized Kelvin layout for the sensing resistor.