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California Polytechnic State University, San Luis Obispo

Series

1997

CMOS integrated circuits

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Bipolar/Cmos (Weak Inversion) Rail-To-Rail Constant-G M Input Stage, Vladimir I. Prodanov, Michael M. Green Feb 1997

Bipolar/Cmos (Weak Inversion) Rail-To-Rail Constant-G M Input Stage, Vladimir I. Prodanov, Michael M. Green

Electrical Engineering

A rail-to-rail constant-gm input stage suitable for bipolar or weak inversion CMOS implementation is presented. To achwe rail-to rail operation, two complementary differential pairs driven in parallel are used. To guarantee constant net transconductance each differential pair is augmented with a suitable biasing circuit. The biasing circuits are implemented without current mirrors, which results in low sensitivity to process variations and potentially higher bandwidth.

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