抄録
A high-precision predictive switched-capacitor (SC) amplifier stage is described. It has a subsidiary signal path to desensitize op-amp imperfections such as low gain. In this paper, the effect of common-mode input voltage to the predictive SC amplifier is analyzed. Simulations using SPICE parameters of a 0.18 μm CMOS process indicate that small gain error and low harmonic distortion can be obtained even in the presence of common-mode input voltage of 200mV and that the circuit has immunity to the common-mode input voltage.
