Abstract: A semiconductor device for a tuner generates a local oscillation signal inside or selects a local oscillation signal introduced from the outside, and controls the power consumption of the circuit used for generating the local oscillation signal. The diversity receiver constituted using the semiconductor device has semiconductor device 1 selected to generate a local oscillation signal inside and semiconductor device 2 selected to introduce a local oscillation signal from the outside. The local oscillation signal of the semiconductor device 2 is driven by the local oscillation signal of the semiconductor device 1. Consequently, any unnecessary power consumption of the circuit generating the local oscillation signal of semiconductor device 2 can be reduced. In addition, since they are the same type of semiconductor device, the uniformity of the operating characteristics of the diversity receiver can be improved.

Abstract: A semiconductor device for a tuner generates a local oscillation signal inside or selects a local oscillation signal introduced from the outside, and controls the power consumption of the circuit used for generating the local oscillation signal. The diversity receiver constituted using the semiconductor device has semiconductor device 1 selected to generate a local oscillation signal inside and semiconductor device 2 selected to introduce a local oscillation signal from the outside. The local oscillation signal of the semiconductor device 2 is driven by the local oscillation signal of the semiconductor device 1. Consequently, any unnecessary power consumption of the circuit generating the local oscillation signal of semiconductor device 2 can be reduced. In addition, since they are the same type of semiconductor device, the uniformity of the operating characteristics of the diversity receiver can be improved.