Patent ID: 7944288

Claim:
A switched capacitor (SC) amplifier circuit comprising: an input for applying an input voltage and an output for providing an output voltage; at least one SC amplifier stage comprising a first input capacitor, a second input capacitor connected to the input, at least one switch, which is designed to couple, under clock control, the first input capacitor to the input, an amplifier, having an amplifier input coupled to the first input capacitor and an amplifier output coupled to the output, and a feedback circuit coupled between the amplifier output and the amplifier input of the amplifier; and at least one compensation circuit coupled between the output and the input, the at least one compensation circuit having a compensation capacitor and a switching arrangement, wherein the switching arrangement is designed to couple, under clock control, the compensation capacitor between the output and the input, wherein a ratio between a capacitance of the compensation capacitor and a capacitance of the first input capacitor is given at least approximately by: C ⁢ ⁢ 31 C ⁢ ⁢ 21 = 1 G - 1 where: C 31 is a capacitance of the compensation capacitor, C 21 is a capacitance of the first input capacitor, and G is a gain of the SC amplifier stage.