Patent ID: 8643437

Claim:
A multi-input differential amplifier with dynamic transconductance compensation, comprising: an input stage, comprising a plurality of differential input pairs, the plurality of differential input pairs comprising: a first differential input pair, for generating a pair of differential signals according to a first input signal and an output signal; a second differential input pair, for generating the pair of differential signals according to a second input signal and the output signal; a third differential input pair, for generating the pair of differential signals according to a third input signal and the output signal; and a fourth differential input pair, for generating the pair of differential signals according to a fourth input signal and the output signal; an output stage, for generating the output signal in response to the pair of differential signals; and a transconductance compensation circuit, coupled between the first and the second differential input pairs, for dynamically compensating a first transconductance of the first differential input pair and a second transconductance of the second differential input pair.