| 摘要 |
PROBLEM TO BE SOLVED: To provide a detection circuit capable of reducing a variation in output voltage caused by a variation in element characteristics, a sensor device, and an electronic apparatus.SOLUTION: A detection circuit comprises: a pyroelectric element 10; a first P-type transistor TP1 that is provided between an output node NQ and a low potential power source node of the detection circuit, and in which a detection signal from the pyroelectric element 10 is input to a gate; and a second P-type transistor TP2 that is provided between a high potential power source node and the output node NQ, and in which the gate is set to a reference voltage VR. When a voltage of the high potential power source node is Vcc, and a voltage of the low potential power source node is GND, the reference voltage is set to Vcc/2. |
