| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver in which component costs can be reduced and a component for temperature compensation can be formed on a semiconductor substrate, and to provide a digital-analog converter and a tuning circuit. SOLUTION: The FM receiver 100 is constituted so as to include an antenna 1, high-frequency receiving circuit 2, local oscillator 3, two DACs 4, 6, control unit 8, mixer circuit 9, intermediate frequency amplifier circuit 10, detection circuit 11, low-frequency amplifier circuit 12, and a speaker 13. The DACs 4, 6 have a predetermined temperature coefficient, and their output voltages vary depending on a change in ambient temperature. When the characteristic of a VCO 31 changes together with the change in ambient temperature and a control voltage applied to this VCO 31 changes, output voltages of the DACs 4, 6 also change. COPYRIGHT: (C)2004,JPO
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