Patent ID: 6236269
Filing Date: 2001-05-22
Classification: H03F

Abstract:
An apparatus including a complementary metal oxide semiconductor (CMOS) differential amplifier circuit, comprising:first and second power supply terminals;first and second input signal terminals for conveying a differential input signal;an output signal terminal for conveying an output signal formed by a sum of an output source current and an output sink current; anda plurality of complementary CMOS differential amplifier circuits, coupled between said first and second power supply terminals and said output signal terminal and coupled in parallel to said first and second input signal terminals, that following reception of said differential input signal provide said output source and sink currents;wherein said plurality of complementary CMOS differential amplifier circuits forms a plurality of circuit branches, each one of said plurality of circuit branches includes an equal number of CMOS transistors coupled between said first and second power supply terminals, and each one of said output source and sink currents includes both PMOS-origin and NMOS-origin current components generated in response to said differential input signal.