TEMPERATURE CHARACTERISTICS CORRECTING CIRCUIT APPARATUS FOR SENSOR AND SENSOR TEMPERATURE CHARACTERISTICS CORRECTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a temperature characteristics correcting circuit apparatus for a sensor capable of highly accurately correcting the temperature characteristic of the sensor. ;SOLUTION: The state of connection of a plurality of resistive elements 31-38 for variably setting the amplification factor of a voltage amplifier by a plurality of analogue switches 42(1)-42(5) is changed at a TCS adjusting circuit 25 to perform adjustment so as to lower the temperature coefficient of sensitivity of a bridge circuit 22 as much as possible. The state of connection of a plurality of resistive elements 28 for variably setting the amplification factor of the voltage amplifier by a plurality of analogue switches 29 is changed at a sensitivity adjusting circuit 24 to adjust the sensitivity of a pressure sensor 21.;COPYRIGHT: (C)2003,JPO