Method and reference circuit for bias current switching for implementing an integrated temperature sensor

Method and reference circuit for bias current switching for implementing an integrated temperature sensor

A method and a reference circuit for bias current switching are provided for implementing an integrated temperature sensor. A first bias current is generated and constantly applied to a thermal sensing diode. A second bias current is provided to the thermal sensing diode by selectively switching a m...

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Hauptverfasser: STROM JAMES DAVID, VAN PHAN NGHIA, ROSNO PATRICK LEE
Format: Patent
Sprache:eng
Schlagworte:
CONTROLLING
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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creator STROM JAMES DAVID
VAN PHAN NGHIA
ROSNO PATRICK LEE
description A method and a reference circuit for bias current switching are provided for implementing an integrated temperature sensor. A first bias current is generated and constantly applied to a thermal sensing diode. A second bias current is provided to the thermal sensing diode by selectively switching a multiplied current from a current multiplier to the thermal sensing diode or to a load diode. The reference circuit includes a reference current source coupled to current mirror. The current mirror provides a first bias current to a thermal sensing diode. The current mirror is coupled to a current multiplier that provides a multiplied current. A second bias current to the thermal sensing diode includes the first bias current and the multiplied current from the current multiplier. The second bias current to the thermal sensing diode is provided by selectively switching the multiplied current between the thermal sensing diode and a dummy load diode.
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A first bias current is generated and constantly applied to a thermal sensing diode. A second bias current is provided to the thermal sensing diode by selectively switching a multiplied current from a current multiplier to the thermal sensing diode or to a load diode. The reference circuit includes a reference current source coupled to current mirror. The current mirror provides a first bias current to a thermal sensing diode. The current mirror is coupled to a current multiplier that provides a multiplied current. A second bias current to the thermal sensing diode includes the first bias current and the multiplied current from the current multiplier. 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subjects CONTROLLING
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
title Method and reference circuit for bias current switching for implementing an integrated temperature sensor
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