CMOS band gap reference circuit
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United States of America Patent
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-
Jul 20, 1993
Grant Date -
N/A
app pub date -
Sep 30, 1991
filing date -
Apr 5, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A band gap reference circuit configuration includes first and second bipolar transistors having base-to-emitter voltages. An emitter resistor is connected to the first bipolar transistor. An operational amplifier is connected to the bipolar transistors for processing a difference generated between the base-to-emitter voltages of the first and second bipolar transistors to generate a largely temperature-independent reference voltage. The bipolar transistors are parasitic transistors, and the operational amplifier is constructed in MOS technology.
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