JPH0272017U - - Google Patents
Info
- Publication number
- JPH0272017U JPH0272017U JP15082088U JP15082088U JPH0272017U JP H0272017 U JPH0272017 U JP H0272017U JP 15082088 U JP15082088 U JP 15082088U JP 15082088 U JP15082088 U JP 15082088U JP H0272017 U JPH0272017 U JP H0272017U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- output
- input
- drive transistor
- input signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Amplifiers (AREA)
Description
第１図は、本考案の一実施例を示す回路図及び
第２図は従来の増幅器を示す回路図である。
２……差動増幅回路、３，４，８，９……駆動
トランジスタ、６，７……出力トランジスタ、１
０，１１……電流ミラー回路、１６，１７，１８
，１９……ミラートランジスタ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional amplifier. 2 ... Differential amplifier circuit, 3, 4, 8, 9... Drive transistor, 6, 7... Output transistor, 1
0 , 11 ... Current mirror circuit, 16, 17, 18
, 19...mirror transistor.
Claims (1)
の関係で駆動する第１及び第２出力トランジスタ
と、 第１入力信号に応じて前記第１出力トランジス
タを駆動する第１駆動トランジスタと、 前記第１入力信号と逆相の第２入力信号に応じ
て前記第２出力トランジスタを駆動する第２駆動
トランジスタと、 前記第２入力信号に応じて前記第１駆動トラン
ジスタの出力電流を吸引する第１電流ミラー回路
と、 前記第１入力信号に応じて前記第２駆動トラン
ジスタの出力電流を吸引する第２電流ミラー回路
とを備え、 前記第１電流ミラー回路を、コレクタに入力電
流が供給される入力側トランジスタとベースが前
記入力トランジスタのベースと共通接続された出
力側トランジスタとによつて構成するとともに、
前記入力側及び出力側トランジスタのエミツタを
共通に前記出力端子に接続したことを特徴とする
増幅器。 (2) 前記第１及び第２入力信号は、差動増幅回
路から得られる互いに逆相の信号であることを特
徴とする請求項第１項記載の増幅器。 (3) 前記第１及び第２電流ミラー回路は、ベー
スとエミツタが前記第２駆動トランジスタと共通
接続された第３駆動トランジスタ及びベースとエ
ミツタが前記第１駆動トランジスタと共通接続さ
れた第４駆動トランジスタのコレクタ電流をそれ
ぞれ入力電流とすることを特徴とする請求項第１
項記載の増幅器。[Claims for Utility Model Registration] (1) First and second output transistors that drive a load connected to an output terminal in a push-pull relationship; and a first output transistor that drives the first output transistor in response to a first input signal. a second drive transistor that drives the second output transistor in response to a second input signal having a phase opposite to that of the first input signal; and a second drive transistor that drives the second output transistor in response to the second input signal; a first current mirror circuit that sucks a current; and a second current mirror circuit that sucks an output current of the second drive transistor according to the first input signal, and the first current mirror circuit is input to a collector. An input transistor to which current is supplied and an output transistor whose base is commonly connected to the base of the input transistor,
An amplifier characterized in that emitters of the input side and output side transistors are commonly connected to the output terminal. (2) The amplifier according to claim 1, wherein the first and second input signals are signals obtained from a differential amplifier circuit and have opposite phases to each other. (3) The first and second current mirror circuits include a third drive transistor whose base and emitter are commonly connected to the second drive transistor, and a fourth drive transistor whose base and emitter are commonly connected to the first drive transistor. Claim 1, characterized in that the collector currents of the transistors are respectively input currents.
Amplifier as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15082088U JPH079449Y2 (en) | 1988-11-18 | 1988-11-18 | amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15082088U JPH079449Y2 (en) | 1988-11-18 | 1988-11-18 | amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0272017U true JPH0272017U (en) | 1990-06-01 |
| JPH079449Y2 JPH079449Y2 (en) | 1995-03-06 |
Family
ID=31424303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15082088U Expired - Lifetime JPH079449Y2 (en) | 1988-11-18 | 1988-11-18 | amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079449Y2 (en) |
-
1988
- 1988-11-18 JP JP15082088U patent/JPH079449Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079449Y2 (en) | 1995-03-06 |
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