Increasing the Common-Mode Rejection Ratio of Differential Amplifiers Through Precisely Matched Resistor Networks

Increasing the Common-Mode Rejection Ratio of Differential Amplifiers Through Precisely Matched Resistor NetworksIn this article we will examine how to select the best differential amplifier and external resistor circuit for your design by understanding the common-mode rejection ratio.  The external resistor circuit must be selected carefully based on the requirements for accuracy of the differential amplifier circuit so that a high system performance can be achieved.