Patent ID: 8130020

Claim:
An apparatus comprising: a switched-capacitor decimator operative to receive a differential input signal comprising first and second input signals at an input sample rate and to provide first and second output signals at an output sample rate lower than the input sample rate, the switched-capacitor decimator comprising: at least one sampling capacitor, each sampling capacitor having a top plate charged with the first input signal when the sampling capacitor is selected for top charging and a bottom plate charged with the second input signal when the sampling capacitor is selected for bottom charging, wherein only the top plate or the bottom plate is being charged at any given time, and wherein the top and bottom plates of each sampling capacitor providing stored charges to the first and second output signals, respectively, when the sampling capacitor is selected for reading; a plurality of switches operative to couple the at least one sampling capacitor to the first and second input signals for charging and to the first and second output signals for reading; and an input capacitor coupled between the first input signal and to the second input signal.