REFERENCE VOLTAGE CIRCUIT
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Sep 26, 2024
filing date -
Sep 26, 2024
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Abstract
A reference voltage circuit includes a differential amplifier circuit capable of stably operating at a constant voltage even if a collector voltage of an NPN transistor changes with temperature and is received. A voltage adjustment circuit is included between commonly connected sources and commonly connected back gates of a first PMOS transistor and a second PMOS transistor serving as input ports of a differential amplifier circuit. A voltage generated by the voltage adjustment circuit is configured to adjust a source-back gate voltage of the first PMOS transistor and the second PMOS transistor in accordance with a voltage change in which the collector voltage of the NPN transistor received at one of the input ports of the differential amplifier circuit.
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