JPS6461106A - Operational amplifier circuit device - Google Patents
Operational amplifier circuit deviceInfo
- Publication number
- JPS6461106A JPS6461106A JP21636187A JP21636187A JPS6461106A JP S6461106 A JPS6461106 A JP S6461106A JP 21636187 A JP21636187 A JP 21636187A JP 21636187 A JP21636187 A JP 21636187A JP S6461106 A JPS6461106 A JP S6461106A
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- oscillation
- amplifier circuit
- semiconductor
- capacitance
- 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
Abstract
PURPOSE:To approach the capacitance of a capacitive element for phase compen sation to a required minimum capacitance by connecting plural capacitive elements in parallel together with a semiconductor switch and closing the switches in order till the oscillation is stopped in detecting the oscillation of an operational amplifier circuit. CONSTITUTION:Semiconductor switch groups 5, 6 are all opened in the initial state of a monolithic semiconductor integrated circuit 1 at application of power. Oscillation is caused to operational amplifier circuits 2A, 3A, then oscillation detection circuits 2f, 3f detect the oscillation and give a detection signal to a switch control circuit 7 to control semiconductor switches 51, 61. If the oscilla tion is not stopped, the number of connected capacitive elements 41-4n is in creased sequentially by the changeover of semiconductor switches 51-5n and 61-6n. Thus, a phase compensation capacitance of the required minimum value or a value close thereto is given to the operational amplifier circuit 2A. Then the switch control circuit 7 acts on the operational amplifier 3A similarly to stop the oscillation of the operational amplifier circuit 3A.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62216361A JPH07120902B2 (en) | 1987-09-01 | 1987-09-01 | Operational amplifier circuit device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62216361A JPH07120902B2 (en) | 1987-09-01 | 1987-09-01 | Operational amplifier circuit device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6461106A true JPS6461106A (en) | 1989-03-08 |
JPH07120902B2 JPH07120902B2 (en) | 1995-12-20 |
Family
ID=16687361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62216361A Expired - Lifetime JPH07120902B2 (en) | 1987-09-01 | 1987-09-01 | Operational amplifier circuit device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07120902B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR960038596A (en) * | 1995-04-26 | 1996-11-21 | 수나오 타카토리 | Multiplication circuit |
JP2016152613A (en) * | 2015-02-19 | 2016-08-22 | シャープ株式会社 | Amplifier, radiation detector including the same, and radiation imaging panel |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS508513U (en) * | 1973-05-22 | 1975-01-29 | ||
JPS5877913U (en) * | 1981-11-19 | 1983-05-26 | 日本コロムビア株式会社 | negative feedback amplifier |
-
1987
- 1987-09-01 JP JP62216361A patent/JPH07120902B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS508513U (en) * | 1973-05-22 | 1975-01-29 | ||
JPS5877913U (en) * | 1981-11-19 | 1983-05-26 | 日本コロムビア株式会社 | negative feedback amplifier |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR960038596A (en) * | 1995-04-26 | 1996-11-21 | 수나오 타카토리 | Multiplication circuit |
JP2016152613A (en) * | 2015-02-19 | 2016-08-22 | シャープ株式会社 | Amplifier, radiation detector including the same, and radiation imaging panel |
Also Published As
Publication number | Publication date |
---|---|
JPH07120902B2 (en) | 1995-12-20 |
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