Patent ID: 7157956
Filing Date: 2007-01-02
Classification: H03F

Abstract:
1. A switched capacitor input circuit comprising: an input buffer having an input terminal for receiving an input voltage, and an output terminal; a switched capacitor sampler circuit having an input terminal coupled to said output terminal of said input buffer and an output terminal, said switched capacitor sampler circuit comprising a capacitor and storing a charge proportional a voltage at said output terminal of said input buffer in said capacitor during a sample period, and transferring said charge from said capacitor to said output terminal thereof during a transfer period subsequent to said sample period, wherein said switched capacitor sampler circuit transfers said charge in a plurality of charge portions corresponding to a like plurality of phases of said transfer period; and an integrator having an input terminal coupled to said output terminal of said switched capacitor sampler circuit, and an output terminal for providing an output voltage signal.