SBOS871 May 2019 INA190-Q1
The INA190-Q1 uses a capacitively coupled amplifier on the front end. Therefore, dc common-mode voltages are blocked from downstream circuits, resulting in very high common-mode rejection. Typically, the common-mode rejection of the INA190-Q1 is approximately 150 dB. The ability to reject changes in the dc common-mode voltage allows the INA190-Q1 to monitor both high- and low-voltage rail currents with very little change in the offset voltage.