JPH0177022U - - Google Patents
Info
- Publication number
- JPH0177022U JPH0177022U JP1987171569U JP17156987U JPH0177022U JP H0177022 U JPH0177022 U JP H0177022U JP 1987171569 U JP1987171569 U JP 1987171569U JP 17156987 U JP17156987 U JP 17156987U JP H0177022 U JPH0177022 U JP H0177022U
- Authority
- JP
- Japan
- Prior art keywords
- input
- stages
- current
- current source
- constant current
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案に係る多入力増幅器の一実施例
を示す構成図、第２図は従来の多入力増幅器の構
成を示す構成図である。
１，２……入力段、５……出力段、１０，１１
……定電流源、１２……電流供給手段、Ｑ１〜Ｑ
４……トランジスタ、Ｒ１〜Ｒ３……抵抗、Ｄ１
，Ｄ２……クランプダイオード。
FIG. 1 is a block diagram showing an embodiment of a multi-input amplifier according to the present invention, and FIG. 2 is a block diagram showing the structure of a conventional multi-input amplifier. 1, 2...Input stage, 5...Output stage, 10, 11
... Constant current source, 12 ... Current supply means, Q 1 ~Q
4 ...transistor, R1 to R3 ...resistance, D1
, D 2 ... Clamp diode.
Claims (1)
段の駆動電流を制御することにより前記入力段を
選択する多入力増幅器において、 少なくとも２つの入力段と、これらの入力段の
各々に接続されこれらの入力段に駆動電流を供給
する定電流源と、この定電流源と前記入力段との
接続点に前記定電流源に流れる電流より大きい電
流を選択的に供給する電流供給手段とを有するこ
とを特徴とする多入力増幅器。[Claims for Utility Model Registration] A multi-input amplifier that has at least two input stages and selects the input stage by controlling the drive current of these input stages, the at least two input stages and these input stages. a constant current source connected to each of the stages and supplying drive current to these input stages, and selectively supplying a current larger than the current flowing through the constant current source to a connection point between the constant current source and the input stage. A multi-input amplifier comprising current supply means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171569U JPH0177022U (en) | 1987-11-10 | 1987-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171569U JPH0177022U (en) | 1987-11-10 | 1987-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177022U true JPH0177022U (en) | 1989-05-24 |
Family
ID=31463515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171569U Pending JPH0177022U (en) | 1987-11-10 | 1987-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177022U (en) |
-
1987
- 1987-11-10 JP JP1987171569U patent/JPH0177022U/ja active Pending