An integrated circuit device includes a plurality of fins on an upper surface of a semiconductor substrate and extending in a first direction, a device isolation insulating film placed between the fins, a gate electrode extending in a second direction crossing the first direction on the insulating film; and an insulating film insulating the fin from the gate electrode. Perturbing arterial pressure from its steady state. It does this using each of its antennae, so producing multiple respective received signals. In this state, the samplehold transistor 221 is turned OFF, and the samplehold capacitance 223 is read.