JPS57123708A - Fet differential amplifying circuit - Google Patents
Fet differential amplifying circuitInfo
- Publication number
- JPS57123708A JPS57123708A JP56009332A JP933281A JPS57123708A JP S57123708 A JPS57123708 A JP S57123708A JP 56009332 A JP56009332 A JP 56009332A JP 933281 A JP933281 A JP 933281A JP S57123708 A JPS57123708 A JP S57123708A
- Authority
- JP
- Japan
- Prior art keywords
- circuits
- output
- negative feedback
- level shifting
- phase inverting
- 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 obtain a differential amplifier which performs high-speed operation and has wide voltage range, by connecting the outputs of two level shifting circuits to the inputs of two phase inverting amplifier, and providing negative feedback from the output of the 1st phase inverting amplifier to the level shifting circuits.
CONSTITUTION: Input voltages VI1 and VI2 are applied to the gates of depletion type FETs F11 and F12 in voltage generating circuits 1 and 2 which consist of cascaded depletion type FETs F11 and F12, and F21 and F22 and function as level shifting circuits. Voltages shifted in level at the drains of the FF12 and F22 are applied to phase inverting and amplifying circuits 11 and 12 each having the same characteristics and a high gain. The negative feedback of the output of the circuit 11 to the gate of the F12 and the quasi-negative feedback to the gate of the F22 are performed, and differential outputs which correspond to two inputs are obtained from the output terminals O1 and O2 of the circuits 11 and 12. In accorance with the voltage VI1, the F12 is brought under negative feedback control by the output of the circuit 11, and the drain output of F11 becomes stable while nearly equal to the threshold voltages of the circuits 11 and 12.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56009332A JPS57123708A (en) | 1981-01-23 | 1981-01-23 | Fet differential amplifying circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56009332A JPS57123708A (en) | 1981-01-23 | 1981-01-23 | Fet differential amplifying circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57123708A true JPS57123708A (en) | 1982-08-02 |
JPS6117166B2 JPS6117166B2 (en) | 1986-05-06 |
Family
ID=11717510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56009332A Granted JPS57123708A (en) | 1981-01-23 | 1981-01-23 | Fet differential amplifying circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57123708A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61112412A (en) * | 1984-11-07 | 1986-05-30 | Hitachi Ltd | Semiconductor integrated circuit |
EP0879500A1 (en) * | 1995-05-03 | 1998-11-25 | Motorola, Inc. | Low-voltage differential amplifier |
-
1981
- 1981-01-23 JP JP56009332A patent/JPS57123708A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61112412A (en) * | 1984-11-07 | 1986-05-30 | Hitachi Ltd | Semiconductor integrated circuit |
EP0879500A1 (en) * | 1995-05-03 | 1998-11-25 | Motorola, Inc. | Low-voltage differential amplifier |
EP0879500A4 (en) * | 1995-05-03 | 2002-04-24 | Cts Corp | Low-voltage differential amplifier |
Also Published As
Publication number | Publication date |
---|---|
JPS6117166B2 (en) | 1986-05-06 |
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