Semiconductor device, temperature sensor, and electronic apparatus comprising it
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United States of America Patent
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Feb 13, 2007
Grant Date -
May 19, 2005
app pub date -
Mar 10, 2003
filing date -
Mar 11, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A temperature sensor including two transistors having different emitter current densities and performing temperature detection based on the fact that the difference in voltage between base and emitter changes with temperature. The temperature sensor is provided with a feedback circuit for controlling respective collector voltages and emitter currents such that the collector voltages of both transistors vary according to similar temperature characteristics.
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