Voltage detector using body effect

Details Voltage detector using body effect Voltage detector using body effect

1998-05-06

1999-08-31

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327538, 327541, H03K 301

Patent

active

059458690

ABSTRACT:
A circuit is designed with a first reference circuit (202) for producing a first reference voltage in response to a first voltage. A second reference circuit (204) produces a second reference voltage in response to the first voltage and a second voltage. A sampling circuit (210) stores the first reference voltage and the second reference voltage and produces a first sample voltage and a second sample voltage. A comparator circuit (222) is coupled to receive the first sample voltage and the second sample voltage. The comparator circuit produces a control signal in response to a difference between the first sample voltage and the second sample voltage. A generator circuit includes an oscillator circuit (226) and a pump circuit (230). The generator circuit produces a first supply voltage in response to the control signal.

REFERENCES:
patent: 5264808 (1993-11-01), Tanaka
patent: 5530640 (1996-06-01), Hara et al.
patent: 5602506 (1997-02-01), Kim et al.
patent: 5721510 (1998-02-01), Miyajima
patent: 5744997 (1998-04-01), Kang et al.

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