Patent ID: 7898328
Filing Date: 2011-03-01
Classification: H03F

Abstract:
1. A differential amplifier, comprising: a first signal path extending from a power supply line to a ground line; a first MOS transistor for causing a signal flowing through the first signal path to flow between a source and a drain thereof and receiving a first input signal at a gate thereof, the first input signal being amplified by the differential amplifier; a second MOS transistor for operating to decrease the signal flowing through the first signal path and passing through a source and a drain thereof when the first MOS transistor operates to increase an amount of the signal flowing through the first signal path and passing through the source and the drain of the first MOS transistor; and a third MOS transistor for operating to increase the signal flowing through the first signal path and passing through a source and a drain thereof when the first MOS transistor operates to increase the amount of the signal flowing through the first signal path and passing through the source and the drain of the first MOS transistor.