Patent ID: 8436672

Claim:
An apparatus comprising: a control register; a switched-capacitor (SC) block coupled to the control register, the SC block comprising: a switched capacitor having a configurable variable capacitance controlled by the control register; a SC sampling circuit coupled to receive an input signal and to selectively output a sampled signal to an amplifier in response to the control register, wherein the SC sampling circuit comprises a first and a second input port; an input multiplexer configured to selectively couple any of a plurality of input lines to any one or both of the first and second input ports; the amplifier coupled to receive the sampled signal; and a SC feedback circuit coupled to the amplifier, wherein the SC feedback circuit is configured to selectively control feedback of the amplifier in response to the control register, and wherein the SC sampling circuit and the SC feedback circuit are configured to select between multiple analog functions of the SC block.