Abstract: A receiver capable of reducing the number of pads of a semiconductor device used for connection with a tuning circuit. The receiver includes a semiconductor device 100 containing various circuits and a tuning circuit 130 connected as a separate part to this semiconductor device 100. The semiconductor device 100 has a pad 112 formed on a semiconductor substrate 110, a processing circuit 114 connected via a capacitor 120 to the pad 112, and aD/A converter 122 connected via a resistor 124 to the pad 112. A tuning voltage generated by the D/A converter 122 is applied via the pad 112 to the tuning circuit 130. Moreover, an output signal of the tuning circuit 130 is supplied to the pad 112 and fed via the capacitor 120 to the processing circuit 114.