Technique to improve linearity of transconductor with bias offset voltages controlling a tail current
I. Yamaguchi, Fujihiko Matsumoto, Yoshifumi Noguchi · Electronics Letters · 2005
Considering mobility degradation, a transfer characteristic of the transconductor using bias offset technique becomes nonlinear. Proposed is a technique to cancel the nonlinearity controlling a tail current. Using the proposed technique, the transconductance error is improved to 1/50 of that of the conventional circuit.