Source voltage generating circuit in semiconductor memory
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United States of America Patent
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Jun 23, 1998
Grant Date -
N/A
app pub date -
Apr 22, 1996
filing date -
Apr 26, 1995
priority date (Note) -
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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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