JPS5753115A - Differential amplifying circuit - Google Patents
Differential amplifying circuitInfo
- Publication number
- JPS5753115A JPS5753115A JP55128189A JP12818980A JPS5753115A JP S5753115 A JPS5753115 A JP S5753115A JP 55128189 A JP55128189 A JP 55128189A JP 12818980 A JP12818980 A JP 12818980A JP S5753115 A JPS5753115 A JP S5753115A
- Authority
- JP
- Japan
- Prior art keywords
- current
- output
- circuit
- diode
- constant
- 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)
Abstract
PURPOSE: To realize a circuit which is strong against fluctiation of a powe source voltage and has less distortion, by providing a diode in one collector of a pair of differential transistors to constitute a current Miller circuit and by obtaining the output from this current Miller circuit.
CONSTITUTION: An output current in a constant ratio to collector currents of transistors TRs Q1 and Q2 of a differential pair is generated as the output of a current Miller circuit consisting of resistances R1 and R2, a diode D1, and a TR Q4. A TR Q7 which supplies a constant current to this differential pair circuit is provided to eliminate the influence due to fluctuation of the power source voltage, and current Miller circuit consisting of resistances R3 and R4, a diode D2, and a TR Q5 is provided to set the current to the output TR Q4 to a value which not only is in a constant ratio to the current of the constant current source Q7 but also makes the output current maximum for a load.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55128189A JPS5753115A (en) | 1980-09-16 | 1980-09-16 | Differential amplifying circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55128189A JPS5753115A (en) | 1980-09-16 | 1980-09-16 | Differential amplifying circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5753115A true JPS5753115A (en) | 1982-03-30 |
JPS6351407B2 JPS6351407B2 (en) | 1988-10-13 |
Family
ID=14978639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55128189A Granted JPS5753115A (en) | 1980-09-16 | 1980-09-16 | Differential amplifying circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5753115A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018155A (en) * | 1973-06-20 | 1975-02-26 |
-
1980
- 1980-09-16 JP JP55128189A patent/JPS5753115A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018155A (en) * | 1973-06-20 | 1975-02-26 |
Also Published As
Publication number | Publication date |
---|---|
JPS6351407B2 (en) | 1988-10-13 |
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