Sidley Austin LLP
Transconductance control circuit of rail-to-rail differential input stages
A transconductance control circuit of a rail-to-rail differential input stage is described. The transconductance control circuit senses the gate-source voltages of PMOS and NMOS differential pairs, converts the sensed voltage to a current, compares the current with a reference current, and controls the currents of the PMOS and NMOS differential pairs to control the transconductance of the RTR differential input stage. Also, various types of biasing techniques and matching techniques are used to reduce the variations of the transconductance.
Fairchild Korea Semiconductor Ltd.
H H
H03F H03F
inventional additional
Dong-Hwan Yun-Kee Jong-Tae
Kim Lee Hwang