Voltage regulator for semiconductor memory

Details Voltage regulator for semiconductor memory Voltage regulator for semiconductor memory

2007-12-10

2009-08-18

Lam, David (Department: 2827)

Static information storage and retrieval

Read/write circuit

Including reference or bias voltage generator

C365S189070, C365S189110, C365S207000

Reexamination Certificate

active

07577043

ABSTRACT:
A voltage regulator in a semiconductor memory has: a comparing unit including first and second bias current sources, for comparing an output voltage with first and second reference voltages under control of a first signal, the second bias current source being ON under control of a second signal; and a driver active element, coupled to the comparing unit, for outputting the output voltage. Before sensing operations, the output voltage is reset to the second reference voltage. During the sensing operations, the output voltage is maintained at the first reference voltage and the second signal is asserted for turning ON the second bias current source for raising speed of the comparing unit. After the sensing operations, the output voltage is reset to the second reference voltage.

REFERENCES:
patent: 5909402 (1999-06-01), Joo
patent: 6195298 (2001-02-01), Furutani et al.

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