| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor physical quantity sensor device that can add a new additional function without adding a new terminal.SOLUTION: The present invention relates to a semiconductor physical quantity sensor device 3 that adjusts an output characteristic of a pressure sensor on the basis of trimming data stored in an EPROM 34 by a writing operation. A comparator 311 is configured to compare a magnitude between an input voltage to be applied to an E terminal 43 and a preliminarily set reference voltage to output a writing control signal of the EPROM 34. When the comparator 311 outputs a Low signal of the EPROM 34, a first gate circuit 312 between the E terminal 43 and a temperature sensor 32, is configured to connect the E terminal 43 and the temperature sensor 32, and further, a second gate circuit 313 between the E terminal 43 and pull-down resistance 314 is configured to disconnect a connection between the E terminal 43 and the pull-down resistance 314. In this case, let an operation voltage of the temperature sensor 32 be less than a reference voltage, and the E terminal 43 is used as an output terminal of the temperature sensor 32. |
