| 摘要 |
PROBLEM TO BE SOLVED: To improve AC operating characteristics of a differential amplifier circuit in a semiconductor integrated circuit device which operates at low power supply voltage.SOLUTION: A semiconductor integrated circuit device comprises: a first MOS transistor and a second MOS transistor which compose a differential pair; a third MOS transistor and a fourth MOS transistor which are connected to drains of the first and second MOS transistors, respectively, to compose a load transistor pair; and a fifth MOS transistor which supplies constant current to a connection point of a source of the first MOS transistor and a source of the second MOS transistor. The fifth MOS transistor has a gate width wider than a gate width of each of the first through fourth MOS transistors and has a gate length longer than a gate length of each of the first through fourth MOS transistors.SELECTED DRAWING: Figure 2 |
