Patent ID: 6566917
Filing Date: 2003-05-20
Classification: G11C,H04N

Abstract:
A sampling circuit havinga first sample hold means having a sample hold switch whose one terminal receives an input signal and a sample hold capacitor whose one terminal is connected to the other terminal of the sample hold switch, an amplification means connected to the other terminal of the sample hold switch, and an output selection switch whose one terminal is connected to an output of the amplification means and the other terminal of which is connected to an output signal line, the sample circuit comprising: a first constant current load connected to an output side of the amplification means, and a first clamping means having a first clamping capacitor whose one terminal is connected to an input signal line and the other terminal of which is connected to one terminal of the sample hold switch and a clamping switch whose one terminal is connected to the other terminal of the clamping capacitor and the other terminal of which is connected to a clamping potential.