JPS5447467A - Differential amplifier circuit - Google Patents
Differential amplifier circuitInfo
- Publication number
- JPS5447467A JPS5447467A JP11270977A JP11270977A JPS5447467A JP S5447467 A JPS5447467 A JP S5447467A JP 11270977 A JP11270977 A JP 11270977A JP 11270977 A JP11270977 A JP 11270977A JP S5447467 A JPS5447467 A JP S5447467A
- Authority
- JP
- Japan
- Prior art keywords
- emitter
- offset
- base
- constitution
- amplifier circuit
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
PURPOSE:To eliminate the offset voltage as well as to facilitate an easy formation of integration by adding the emitter follwer to the base side of each trasistor of differential pairs. CONSTITUTION:The output terminal of the emitter follower is connected to each base of differential transistor Q1 and Q2, and at the same time emitter resistance Re1 and Re2 of Q1 and Q2 are used as the fixed resistances. Then the offset adjusting variable resistance is connected between the emitters of transistor Q3 and Q4, and the needle of VR is connected to power source -VEE. In such constitution, the current of the emitter follower is controlled through adjustment of VR, and accordingly the base potentioal of Q1 and Q2 can be varied. Thus, the offset between output voltage Vi1 and Vi2 can be solved easily.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11270977A JPS5447467A (en) | 1977-09-21 | 1977-09-21 | Differential amplifier circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11270977A JPS5447467A (en) | 1977-09-21 | 1977-09-21 | Differential amplifier circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5447467A true JPS5447467A (en) | 1979-04-14 |
Family
ID=14593527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11270977A Pending JPS5447467A (en) | 1977-09-21 | 1977-09-21 | Differential amplifier circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5447467A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456887A (en) * | 1980-09-25 | 1984-06-26 | Pioneer Electronic Corporation | Differential amplifier |
US5159285A (en) * | 1990-07-17 | 1992-10-27 | Nec Corporation | Differential amplifying circuit having emitter follower circuit |
-
1977
- 1977-09-21 JP JP11270977A patent/JPS5447467A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456887A (en) * | 1980-09-25 | 1984-06-26 | Pioneer Electronic Corporation | Differential amplifier |
US5159285A (en) * | 1990-07-17 | 1992-10-27 | Nec Corporation | Differential amplifying circuit having emitter follower circuit |
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