Patent ID: 8248162
Filing Date: 2012-08-21
Classification: H03F

Abstract:
1. A differential amplifier that outputs a difference signal representing a difference between signals respectively inputted to first and second input terminals via a first output terminal, and that outputs an inverted difference signal that corresponds to said difference signal inverted in phase via a second output terminal, comprising: a first switching element that makes a short-circuit between said first input terminal and said second output terminal when turned on, a second switching element that makes a short-circuit between said second input terminal and said first output terminal when turned on, a third switching element that makes a short-circuit between said first output terminal and said second output terminal when turned on, and a control part that performs an output short-circuiting step of setting the third switching element to an ON state for a predetermined period while setting said first and second switching elements to an OFF state, and subsequently performs an initializing step of simultaneously switching said third switching element to the OFF state from the ON state and both of said first and second switching elements to the ON state from the OFF state.