Patent ID: 8299576

Claim:
A switched-capacitor circuit comprising: a plurality of capacitors configured on a semiconductor, each capacitor of the plurality of capacitors having a respective top plate and a respective bottom plate, with a respective capacitance developed between the respective top plate and the respective second plate, each capacitor comprising: one or more layers of conductive strips forming the capacitor, wherein for each pair of neighboring conductive strips within each of the one or more layers of conductive strips: a first conductive strip of the pair of neighboring conductive strips is coupled to the respective top plate of the capacitor and not to the respective bottom plate of the capacitor; and a second conductive strip of the pair of neighboring conductive strips is coupled to the respective bottom plate of the capacitor and not to the respective top plate of the capacitor; and a low-impedance conductive layer spanning an area underneath all respective one or more layers of conductive strips; a differential amplifier comprising an input stage having a first input and a second input, wherein the first input is coupled to the respective top plate of each capacitor of a first subset of the plurality of capacitors, and wherein the second input is coupled to the respective top plate of each capacitor of a second subset of the plurality of capacitors; and a first transistor device comprising: a control terminal coupled to the input stage of the differential amplifier; and a first channel terminal coupled to the low-impedance conductive layer.