Patent ID: 9722545
Date: 2017-08-01
CPC Classifications: H03F,H03G

Claim:
1. An emphasis circuit for outputting a signal having frequency response characteristics that provide a gain depending on a frequency as a main signal output in response to differential input signals formed of an in-phase input signal and a reverse phase input signal, the emphasis circuit comprising: wherein each of the baseband amplifier section and the peaking amplifier section comprises a drive current setting section configured to adjust a drive current value for operating the each of the baseband amplifier section and the peaking amplifier section, and wherein the drive current setting section of the each of the baseband amplifier section and the peaking amplifier section is adjusted so that a sum of the first drive current value for operating the baseband amplifier section and the second drive current value for operating the peaking amplifier section is constant, to thereby obtain an emphasis amount with which high frequency band deterioration is suppressed.