Quasi auto-zero circuit for sampling amplifiers

Details Quasi auto-zero circuit for sampling amplifiers Quasi auto-zero circuit for sampling amplifiers

1986-11-12

1988-05-31

Mullins, James B.

Amplifiers

With periodic switching input-output

307362, H03F 100, H03K 522

Patent

active

047484187

ABSTRACT:
A sampling amplifier (22) consisting of a series combination of a signal input terminal (12), a first capacitor (C1), a first amplifier (A1), a second capacitor (C2), a second amplifier (A2), and a signal output terminal (VOUT2) is able to sample at a higher frequency by providing a low impedance path between the signal output terminal (VOUT2) and a junction (VOUT1) between the first amplifier (A1) and the second capacitor (C2) to quasi auto-zero the amplifier between samples.

REFERENCES:
patent: 4547683 (1985-10-01), Bingham
Tsukada, et al., "CMOS 8b 25MHz Flash ADC," Proceedings of the 1985 IEEE International Solid-State Circuits Conferences, pp. 34 and 35.
Kansy, "Response of a Correlated Double Sampling Circuit to 1/f Noise," IEEE Journal of Solid-State Circuits, vol. SC-15, Number 3, Jun. 1980, pp. 373-375.

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