SEMICONDUCTOR CIRCUIT USING VERTICAL TRANSISTOR

摘要

A semiconductor circuit is provided to improve the degree of integration and to improve characteristics of the semiconductor circuit itself by using an improved vertical transistor structure. A semiconductor circuit includes an amplifying transistor pair, a load portion, and a current source. The amplifying transistor pair includes two transistors. The amplifying transistor pair is used for amplifying a differential input signal and outputting the amplified differential input signal. The load portion is located at a portion between a first power source and the amplifying transistor pair. The current source is located between the amplifying transistor pair and a second power source. The current source is used as a current path between the first and the second power sources. Each transistor of the amplifying transistor pair includes a drain(341) of an upper portion and a source(343) of a lower portion.