Sensor device including diode elements connected in series in opposite directions to each other

Abstract

In conventional sensor devices, it has been difficult to achieve both EMC resistance and ESD resistance, which are required at the output terminals of an automobile sensor device. A sensor device 1 of the present embodiment comprises: a power supply terminal 2 that supplies power; a ground terminal 3; a sensor element 4, the electrical characteristics of which change in accordance with a physical quantity; a signal processing integrated circuit 5 that processes an output signal output from the sensor element 4; and an output terminal that outputs the output signal processed by the signal processing integrated circuit 5. In addition, the signal processing integrated circuit 5 comprises: a signal processing circuit 6 that processes the output signal output from the sensor element 4; a resistance element 8 that is connected between the output terminal 11 and the signal processing circuit 6, and that is disposed on an insulating film; diode elements 9, 10 that are connected between the output terminal 11 and the ground terminal 3, and that are serially connected with each other in opposite directions; and a capacitance element 7 that is connected between the ground terminal 3 and the signal processing circuit 6 side of the resistance element 8.

Dependencies are inferred from the claim text.