Rail-to-rail charge pump with replica circuitry

Details Rail-to-rail charge pump with replica circuitry Rail-to-rail charge pump with replica circuitry

2006-10-17

2006-10-17

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With particular feedback

C327S067000, C327S157000

Reexamination Certificate

active

07123085

ABSTRACT:
The charge pump circuit includes: a charge pump output branch having a first transistor and a second transistor coupled in series; an output branch replica having a third transistor and a fourth transistor coupled in series; a feedback circuit coupled between the output branch and the output branch replica; a charge pump input circuit coupled to the charge pump output branch, and having first and second input branches; and an input circuit branch replica controlled by the feedback circuit and coupled to the charge pump input circuit.

REFERENCES:
patent: 6172571 (2001-01-01), Moyal et al.
patent: 6727735 (2004-04-01), Park
patent: 6952126 (2005-10-01), Byun et al.

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