| 摘要 |
A frequency oscillation circuit of tuner is provided to allow a frequency oscillation unit to generate an output voltage and bits as minimum in size by oscillating an external input voltage at a voltage controlled oscillator. A frequency oscillation circuit of tuner includes a VCO(Voltage Controlled Oscillator), a frequency oscillation unit(210), and an amplification unit(220). The VCO generates an oscillation frequency for a user-selected channel in a mixer of a tuner. The frequency oscillation unit oscillates an external input voltage to the VCO to output the oscillation frequency having an output level, wherein an output voltage and a bit size are minimized. The amplification unit clamps an AC voltage to output a tuning voltage. |
