Low-consumption low-noise charge-pump circuit

Details Low-consumption low-noise charge-pump circuit Low-consumption low-noise charge-pump circuit

1994-02-25

1995-11-07

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327111, 327405, 327403, 327108, H03K 1766

Patent

active

054650615

ABSTRACT:
A low noise charge-pump circuit with low power consumption and operating in a cyclic mode comprises two current sources connected in parallel, and a current mirror for transforming the current supplied by one of the current sources and coupling it to the output of the other current source. Each of the current sources essentially comprises a transistor controlled from the output (VB) of a reference voltage generator via a respective transistor switch. The reference voltage generator essentially comprises a third transistor similar to the two first-mentioned transistors and in series with a further current source supplying a current Io, and means for making the current through the third transistor equal to the current Io.

REFERENCES:
patent: 3009070 (1961-11-01), Barnes
patent: 4115710 (1978-09-01), Lou
patent: 4847519 (1989-07-01), Wahl et al.

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