Source voltage generating circuit in semiconductor memory

Details Source voltage generating circuit in semiconductor memory Source voltage generating circuit in semiconductor memory

1996-04-22

1998-06-23

Zarabian, A.

Static information storage and retrieval

Powering

Data preservation

365222, 365223, G11C 700

Patent

active

057711984

ABSTRACT:
An internal power supply circuit for a semiconductor memory device comprising a differential amplifier having a reference voltage as an input and utilizing an external power supply voltage. An amplifier output provides an internal power supply voltage. The amplifier is connected to a current source which comprises a plurality of transistors connected in series between one side of said amplifier and ground. A current control transistor having a channel larger than the channels of the transistors connected in series is switchable between a first state in which the current control transistor is substantially on and a second state in which said current control transistor is substantially off.

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patent: 5568440 (1996-10-01), Tsukude et al.
patent: 5587958 (1996-12-01), Kaneko et al.
patent: 5594699 (1997-01-01), Nomura et al.

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