| 摘要 |
PROBLEM TO BE SOLVED: To provide a correction circuit in which increase in size is suppressed, and a manufacturing method of the same.SOLUTION: A correction circuit corrects temperature characteristics of a first signal output from a first temperature sensor (10) for measuring temperature of a heating element (11). The correction circuit includes: a second temperature sensor (20) for outputting a second signal having more ideal temperature characteristics than those of the first signal; an ideal signal generation unit (100) for generating an ideal first signal which is expected to be output under an environmental temperature, based on the second signal under the environmental temperature, and temperature characteristics (α-δ) of the first signal and the second signal preset at a manufacturing stage; a difference unit (110) for calculating a differential value between an output signal of the ideal signal generation unit and the first signal under the environmental temperature and when the heating element is in a non-drive state; a holding unit (120) for holding the differential value calculated at the difference unit; and an addition unit (130) for adding the differential value held at the holding unit to the first signal. |
