Patent ID: 6114907
Filing Date: 2000-09-05
Classification: H03F

Abstract:
A differential amplifier having a differential input and a differential output, said differential amplifier comprising:first and second transistors of a first polarity having a common source connection, with the first and second transistors having respective gate electrodes which form the differential input;a tail current source connected to the common source connection;an active load which includes a first transistor of a second polarity, opposite the first polarity, which defines a first series path with the first transistor of the first polarity and a second transistor of the second polarity which defines a second series path with the second transistor of the first polarity, with a first output being defined at the first series path intermediate the first transistors of the first and second polarities and a second output being defined at the series path intermediate the second transistors of the first and second polarities, with gates of the first and second transistors of the second polarity being electrically isolated from one another;a first compensation capacitor coupled between the gate of the first transistor of the second polarity and the second output; anda second compensation capacitor coupled between the gate of the second transistor of the second polarity and the first output.