Patent ID: 8193856

Claim:
An amplifier for an amplifier circuit having a switched capacitor circuit, comprising: a first capacitor for frequency compensation connected in parallel to an amplifier stage, where a second capacitor for frequency compensation is selectively connected in parallel to the first capacitor for frequency compensation, and is via a compensation switch, wherein the first capacitor for frequency compensation and the second capacitor for frequency compensation or the compensation switch is connected to an input of the amplifier stage, wherein a third capacitor for frequency compensation is connected in parallel to the amplifier stage at an output of an upstream amplifier stage, wherein a fourth capacitor for frequency compensation is switched in parallel to the third capacitor for frequency compensation and is activatable or deactivatable via a second compensation switch, and wherein another reference potential (Vbias) is connected between, on the one hand (i) the input of the amplifier stage, the terminal of the first capacitor for frequency compensation thereon and the terminal of the at least second capacitor or the compensation switch thereon, and, on the other hand (ii) the output of the upstream amplifier stage, the terminal of the third capacitor for frequency compensation thereon and the terminal of the fourth capacitor for frequency compensation or the second compensation switch thereon.