| 摘要 |
<p>An AGC circuit is capable of prevention of occurrence of distortion of an input signal of an A/D converter and enables use of full scale of the A/D converter even in demodulation of a signal of a modulation system, in which a frequency axis is commonly occupied by a plurality of receivers, such as CDMA. The AGC circuit includes an amplifier to amplify an input signal and a controller to compare an amplitude of the input signal and a first reference value and control a gain of the amplifier depending upon a result of the comparison. The AGC circuit further includes first reference value controller to detect a maximum value of the amplitude of the input signal amplified by the amplifier and controlling the first reference value depending upon the maximum value.</p> |
