Patent ID: 9128127
Filing Date: 2015-09-08
Classification: G01R,H03K

Abstract:
1. A sensor device for generating a logic output in accordance with intensity of a physical quantity applied to a sensor element, the sensor device comprising: a switch circuit, which is connected to a first terminal pair and a second terminal pair of the sensor element, for controlling switching between a terminal pair supplied with power and a terminal pair for outputting a detection voltage corresponding to the intensity of the physical quantity, a differential amplifier comprising: a first input terminal and a second input terminal, which are connected to the first output terminal and the second output terminal of the switch circuit, respectively; and a first output terminal and a second output terminal for outputting a result of differentially amplifying the detection voltage; an amplifier comprising a first input terminal, a second input terminal, a third input terminal, a fourth input terminal, and an output terminal, a detection voltage setting circuit for outputting different voltages to the third input terminal and the fourth input terminal of the amplifier.