Patent ID: 9514788
Filing Date: 2016-12-06
CPC Classification: G05F,G11C,H03F

Claim Text:
1. A differential amplifier circuit comprising: first and second main Input units suitable for receiving a first input signal and a second input signal, respectively; a first current mirroring unit suitable for being coupled to a first terminal of the first main input unit and mirroring a current of the first input signal inputted to the first main input unit; a second current mirroring unit suitable for being coupled to a first terminal of the second main input unit and mirroring a current of the second input signal inputted to the second main input unit; an output unit suitable for generating an output voltage based on results of the mirroring of the first current mirroring unit and the second current mirroring unit; a first current control unit suitable for reducing a current mirrored by the first current mirroring unit by supplying the first terminal of the first main input unit with a first compensation current generated by re-mirroring the second input signal and reducing a current mirrored by the second current mirroring unit by supplying the first terminal of the second main input unit with a second compensation current generated by re-mirroring the first input signal; and a second current control unit suitable for controlling a tail current of the first main input unit in response to the second input signal and controlling a tail current of the second main input unit in response to the first input signal.