A sensor signal processing circuit is connected to a sensor including first and second conductors arranged in different directions. The sensor signal processing circuit includes: a signal supply circuit configured to supply a first signal to the first conductor; a first signal detecting circuit connected to the second conductor; and a control circuit configured to perform control of detecting a proximity of an indicator to the sensor based on a change in a capacitance between the second conductor and a ground, and detecting a position indicated by the indicator based on a change in a capacitance at an intersection point of the first and second conductors by controlling the signal supply circuit and the first signal detecting circuit based on a comparison between a predetermined value and a detection result based on the change in the capacitance between the second conductor and the ground.
