Postprint version. Published in Institution of Engineering and Technology Electronics Letters, Volume 33, Issue 5, February 1, 1997, pages 386-387.
NOTE: At the time of publication, the author Vladimir Prodanov was not yet affiliated with Cal Poly.
The definitive version is available at http://dx.doi.org/10.1049/el:19970263.
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.
Electrical and Computer Engineering
This paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology Copyright.