Ie. Opris et Ld. Lewicki, BIAS OPTIMIZATION FOR SWITCHED-CAPACITOR AMPLIFIERS, IEEE transactions on circuits and systems. 2, Analog and digital signal processing, 44(12), 1997, pp. 985-989
Bias optimization is one of the most important design issues in many l
ow power applications. Several biasing schemes for switched capacitor
applications are analyzed in this paper from the settling time point o
f view. A bias circuit is described that provides the best tradeoff be
tween the slew-rate and the unity gain bandwidth of a single dominant-
pole opamp over process and temperature variations. Theoretical analys
is and simulations confirm a quasi-constant settling time with minimal
process dependence.