Temperature compensating circuit, temperature compensating logarithm conversion circuit and light receiver
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United States of America Patent
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-
Aug 5, 2003
Grant Date -
Feb 13, 2003
app pub date -
Jun 27, 2002
filing date -
Jun 24, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A temperature compensating circuit includes a first circuit network 1 between an inverting input terminal of an operational amplifier 13 and an output terminal of the operational amplifier 13, and a second circuit network 2 between the inverting input terminal of the operational amplifier 13 and a reference potential. At least one of the first circuit network and the second circuit network is made of an arrangement containing a plurality of series-connected thermistor/resistor pairs in which the thermistors are connected parallel to the resistors, and the temperature compensating circuit compensates a temperature-dependent signal which is inputted into a positive phase input terminal of the operational amplifier 13, and outputs the temperature-compensated signal.
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