JPS6385923U

JPS6385923U -

Info

Publication number: JPS6385923U
Application number: JP18149486U
Authority: JP
Priority date: 1986-11-26
Filing date: 1986-11-26
Publication date: 1988-06-04

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す構成図、第２
図はその説明のための図、第３図は従来例の構成
図、第４図及び第５図はその説明のための図であ
る。１及び４はオフセツトキヤンセル用のトランジ
スタ、２，５及び２１は定電流源、３，６及び９
はスイツチング素子を構成するトランジスタ、１
０は入力端子、１１は出力端子である。 Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a diagram for explaining the same, FIG. 3 is a configuration diagram of a conventional example, and FIGS. 4 and 5 are diagrams for explaining the same. 1 and 4 are transistors for offset cancelling, 2, 5 and 21 are constant current sources, 3, 6 and 9
is a transistor constituting a switching element, 1
0 is an input terminal, and 11 is an output terminal.

Claims

[Claims for Utility Model Registration] A first constant current source, a diode, a second constant current source with the same current value as the first constant current source, and a first constant current source connected between the first and second power supply terminals. A series circuit of the connection switch is connected, a series circuit of the collector-emitter of the transistor, a third constant current source, and a second connection switch is connected between the first and second power supply terminals, and a series circuit of the first and second connection switches is connected. A connection point between the constant current source and the diode is connected to the base of the transistor, and the connection point is connected to the second power supply terminal via a third connection switch, and the connection point between the constant current source and the second constant current source is connected to the base of the transistor. An input terminal is led out from the connection point of the source, and an output terminal is led out from the connection point of the transistor and the third constant current source, and the first and second connection switches and the third connection switch are A switch circuit characterized by being on/off controlled by gate pulses whose phases are reversed.