Current source and current supply system with hysteresis
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United States of America Patent
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Feb 13, 2018
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N/A
app pub date -
Jul 2, 2015
filing date -
Jul 2, 2015
priority date (Note) -
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Abstract
A current source with hysteresis for an output circuit includes a tail current transistor, a resistor and a differential pair. The tail current transistor is used for supplying a current to the output circuit. The resistor is coupled to a drain terminal of the tail current transistor. The differential pair, coupled to the resistor, is used for controlling a magnitude of the current supplied to the output circuit. The differential pair includes a first transistor, of which a bulk terminal is coupled to a terminal of the resistor; and a second transistor, of which a bulk terminal is coupled to another terminal of the resistor.
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