Patent ID: 8319550
Filing Date: 2012-11-27
Classification: H03F,H03G

Abstract:
1. A method of operating a programmable-gain amplifier which has a plurality of capacitors, an attenuation capacitor, and a differential amplifier, wherein a first terminal of each of the plurality of capacitors is coupled to a minus input of the differential amplifier, the method comprising: receiving a gain select signal which indicates a selected subset of capacitors of the plurality of capacitors and an unselected subset of capacitors of the plurality of capacitors, wherein the selected subset includes at least one capacitor of the plurality of capacitors, and wherein the selected subset and the unselected subset are mutually exclusive; during a sampling phase of the programmable-gain amplifier: during a gain phase of the programmable-gain amplifier: during the gain phase of the programmable-gain amplifier: