Importance

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Abstract

Disclosed is a differential amplifier including: first and second transistors each having a first gate, a second gate, a source, and a drain open to a drain side, the first gate and the second gate being controlled independently, a differential input being supplied to between the first gates of the first and second transistors, and the sources of the first and second transistors being connected in common to a first reference potential; first and second load circuits each connected to each of drain sides of the first and second transistors; a detection circuit detecting a common-mode voltage between ones of drain sides of the first and second transistors; and a comparison and amplification circuit amplifying the common-mode voltage in comparison with a second reference potential and supplying an output signal thereof to both of the second gates of the first and second transistors.

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First Claim