Differential amplifier with gain substantially independent of temperature

摘要

A differential amplifier is described comprising an input stage for receiving differential and a common mode input signal components; an output stage providing a differential and common mode output signal components; and the differential amplifier being adapted to set a relationship between the magnitude of the common mode output level of the amplifier with respect to the magnitude of the common mode input level to the input stage so that the common mode output level intrinsically follows the common mode input level as a common mode follower without using feedback control of the common mode output voltage derived from a common summation point.