Temperature sensor circuit
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United States of America Patent
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-
May 6, 2008
Grant Date -
May 19, 2005
app pub date -
Oct 14, 2004
filing date -
Oct 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To provide a temperature sensor circuit capable of obtaining a highly precise output voltage as a desired output voltage. The temperature sensor circuit includes: at least a constant current source; and a base-to-emitter voltage multiplication circuit constructed by a bipolar transistor and resistors, in which a base current error compensation circuit is provided so as to eliminate an error of the base current of the bipolar transistor caused to flow through the resistor. Further, the temperature sensor circuit of the present invention has such a structure that a resistance value of the resistor that determines an output voltage may be controlled.
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