Reference voltage generating circuit
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United States of America Patent
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May 7, 1996
Grant Date -
N/A
app pub date -
Sep 1, 1993
filing date -
Sep 2, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A constant current is produced by a first MOSFET of depletion type whose source and gate are interconnected and then is passed through a current mirror circuit made up of MOSFETs of the opposite conduction type with respect to the first MOSFET and to a second MOSFET which has the same conduction type as the first MOSFET and whose gate and drain are interconnected. The voltage between the gate and the source of the second MOSFET is taken as an output constant voltage, which is temperature-compensated by the current ratio of the current mirror circuit.
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