Internal voltage generator for semiconductor device

Details Internal voltage generator for semiconductor device Internal voltage generator for semiconductor device

2005-03-15

2005-03-15

Vu, Bao Q. (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S543000, C327S538000, C327S540000

Reexamination Certificate

active

06867641

ABSTRACT:
Disclosed is an internal voltage generator which generates a stable internal voltage using two power up sensing means. Clamp means outputs a first voltage. First and second power up sensing means sense the external applied to the semiconductor device and output first and second control signals, respectively. A first switch receives the first voltage and a switch controller receives the first and second control signals from the first and second power up sensing means and controls turn on/off of the first switch. A second switch is turned on/off according to the second control signal from the second power up sensing means and receives a second voltage. An amplifier selectively receives the first and second voltages from the first and second switches and outputs the second voltage.

REFERENCES:
patent: 5491437 (1996-02-01), Rincon et al.
patent: 6288967 (2001-09-01), Fujisawa et al.
patent: 6477090 (2002-11-01), Yamaki et al.
patent: 6643193 (2003-11-01), Yamaki et al.
patent: 6720755 (2004-04-01), Sharpe-Geisler
patent: 6734719 (2004-05-01), Tanzawa et al.
patent: 6774712 (2004-08-01), Rhee et al.

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