JPS64807A - Current mirror circuit - Google Patents
Current mirror circuitInfo
- Publication number
- JPS64807A JPS64807A JP62154488A JP15448887A JPS64807A JP S64807 A JPS64807 A JP S64807A JP 62154488 A JP62154488 A JP 62154488A JP 15448887 A JP15448887 A JP 15448887A JP S64807 A JPS64807 A JP S64807A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- input
- terminal
- current
- input terminal
- 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 operate an input signal with a high precision by detecting the difference between the voltage of an input terminal and a preliminarily set reference voltage and performing the control in accordance with the difference output so that the voltage of the input terminal is constant.
CONSTITUTION: A negative feedback circuit 200 adjusts the current of a transistor TR 220 so that the voltage of a current mirror operation circuit input terminal 115 is equal to that of a reference input 211 of an amplifier 210. As the result, not only the voltage of the terminal 115 but also voltages of input terminals 111∼114 where forward voltages are approximately equal are controlled to the same reference value. Consequently, if a voltage V5 which is an approximate average value of operation input voltage V1∼V4 of operation inputs 111∼114 is impressed to the terminal 115, an arithmetic circuit 100 and an output current I0 are not dependent upon the variation of temperature or the like, and the output current I0 is given by I0=f(V1, V2, V3, V4) determined with inputs V1∼V4.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154488A JPH01807A (en) | 1987-06-23 | current mirror circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154488A JPH01807A (en) | 1987-06-23 | current mirror circuit |
Publications (3)
Publication Number | Publication Date |
---|---|
JPS64807A true JPS64807A (en) | 1989-01-05 |
JPH01807A JPH01807A (en) | 1989-01-05 |
JPH0547124B2 JPH0547124B2 (en) | 1993-07-15 |
Family
ID=
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6261410A (en) * | 1985-09-11 | 1987-03-18 | Toshiba Corp | Current mirror circuit |
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6261410A (en) * | 1985-09-11 | 1987-03-18 | Toshiba Corp | Current mirror circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0547124B2 (en) | 1993-07-15 |
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