| 摘要 |
<p>A semiconductor integrated circuit including an amplifier circuit inserted in a stage preceding an image ADC, wherein the frequency band or amplification factor of the amplifier circuit can be changed without additionally providing any passive elements, such as resistors, capacitors and the like, and wherein when the frequency band is narrowed, the power consumption of the amplifier circuit is reduced. This semiconductor integrated circuit includes a plurality of amplifiers (A1-AN) with their input and output terminals connected in parallel, and also includes selector circuits (SW1-SWN) for activating selected ones of the amplifiers in accordance with control signals.</p> |
