Patent ID: 8126501

Claim:
A semiconductor device for use in a radio communication device, comprising: a semiconductor chip including a voltage controlled oscillator and a low noise amplifier; a chip mounting portion over which the semiconductor chip is mounted; a plurality of leads disposed around the chip mounting portion, the plurality leads including a first lead and a second lead; and a resin sealing body covering the semiconductor chip, parts of the leads, and a part of the chip mounting portion, a first electrode for providing ground potential to the low noise amplifier is disposed on the semiconductor chip; a second electrode for providing ground potential to the voltage controlled oscillator is disposed on the semiconductor chip; the first electrode is electrically connected with the first lead via a first conductive wire; the first electrode is not electrically connected with the chip mounting portion via the first conductive wire; the second electrode is electrically connected with at least either the second lead or the chip mounting portion via a second conductive wire; the first electrode and the second electrode are electrically isolated from each other in the semiconductor device; and the first conductive wire and the second conductive wire are electrically isolated from each other in the semiconductor device.