Substrate bias voltage generating circuit for use in a...

Details Substrate bias voltage generating circuit for use in a... Substrate bias voltage generating circuit for use in a...

2007-11-20

2007-11-20

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C363S059000

Reexamination Certificate

active

11291194

ABSTRACT:
A substrate voltage generating circuit for use in a semiconductor memory device is provided. The semiconductor memory device includes a charge pump for generating a substrate bias voltage in response to a clock signal; a first inverter type detector for detecting whether the substrate bias voltage reaches a target voltage; a second differential amplifier type detector for detecting whether the substrate bias voltage reaches the target voltage; and a driver for generating the clock signal in response to an output of one of the first and second detectors.

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