| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow temperature compensation with desired accuracy, even when the offset and the gain of an electrical sensor output signal has non-linear temperature dependences and second latent higher temperature dependences. <P>SOLUTION: A sensor temperature compensation circuit has a sensor and a non-linear temperature compensation circuit that compensates for non-linear temperature dependences on the offset and/or the gain generated by the sensor. For instance, a summer adds two offset compensation signals, the ratio between which is a function of the temperature, to at least partially compensate for the offset temperature dependences. The summed signal may then be used to provide the non-linear temperature compensation to the offset. Alternatively or additionally, the summer adds two gain compensation signals, a ratio between which is a function of temperature, to at least partially compensate for the gain temperature dependences. The summed signal may then be used to provide non-linear temperature compensation to the gain. <P>COPYRIGHT: (C)2008,JPO&INPIT |
