Charge pump circuit capable of generating positive and negative

Details Charge pump circuit capable of generating positive and negative Charge pump circuit capable of generating positive and negative

1998-10-15

2000-11-14

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327390, 327537, G05F 110

Patent

active

061475475

ABSTRACT:
Output nodes (Noutn, Noutp) outputting a negative potential (VN) and a positive potential (VPS) respectively are supplied with fixed potentials by reset circuits respectively when unused. Switches (SW2, SW3) conduct when generating the negative potential, while switches (SW1, SW4) conduct when generating the positive potential. Reference potentials for the generated potentials are supplied to internal nodes (N10, N20) through the switches (SW1, SW3) respectively. Poly-diode elements are employed for a voltage generation part, whereby a charge pump circuit capable of generating positive and negative voltages can be implemented without remarkably changing a fabrication method.

REFERENCES:
patent: 4807104 (1989-02-01), Floyd et al.
patent: 5262934 (1993-11-01), Price
patent: 5306954 (1994-04-01), Chan et al.
patent: 5606491 (1997-02-01), Ellis
patent: 5748032 (1998-05-01), Baek
patent: 5812018 (1998-09-01), Sudo et al.

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