7.1 Overview

The INA165x-Q1 family combines high-performance audio operational amplifier cores with high-precision resistor networks to provide exceptional audio performance and rejection of noise that may be externally coupled into the audio signal path. The two line-receiver channels of the INA1650-Q1, and the single line receiver channel of the INA1651-Q1, use an instrumentation amplifier topology with a fixed unity gain to provide high input impedance and a high common-mode rejection ratio (CMRR). Unlike other line receiver products that use a simple four-resistor difference amplifier topology, the INA165x-Q1 topology provides excellent CMRR even with mismatched source impedances.