JPS57204610A - Current source circuit - Google Patents
Current source circuitInfo
- Publication number
- JPS57204610A JPS57204610A JP56090233A JP9023381A JPS57204610A JP S57204610 A JPS57204610 A JP S57204610A JP 56090233 A JP56090233 A JP 56090233A JP 9023381 A JP9023381 A JP 9023381A JP S57204610 A JPS57204610 A JP S57204610A
- Authority
- JP
- Japan
- Prior art keywords
- current
- iin
- transistors
- output
- transistor
- 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
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To increase the accuracy of the input/output current ratio, by supplying the base current of a transistor from a power supply added for bias use and a transistor.
CONSTITUTION: If the current amplification factor β of all transistors is equal to the emitter area, the output current IO flowing out of each fan-out is equal amon all transistors to the current IIN flowing through an input signal current 13. That is IO=IIN/[1+(n-1)/β2}≃ IIN{1-(n+1)/β2]. Accordingly the error between IIN and IO is compressed down to (n+1)/2. Furthermore the bases of the output transistors 15, 17∼(2n-1)+14 are connected to a voltage source and function as the base earths. As a result, the output impedance is set at an extremely high level when it is viewed at the side of the collector.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56090233A JPS57204610A (en) | 1981-06-12 | 1981-06-12 | Current source circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56090233A JPS57204610A (en) | 1981-06-12 | 1981-06-12 | Current source circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57204610A true JPS57204610A (en) | 1982-12-15 |
Family
ID=13992768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56090233A Pending JPS57204610A (en) | 1981-06-12 | 1981-06-12 | Current source circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57204610A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59211307A (en) * | 1983-05-16 | 1984-11-30 | Nec Corp | Current mirror circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144859A (en) * | 1974-08-16 | 1976-04-16 | Rca Corp |
-
1981
- 1981-06-12 JP JP56090233A patent/JPS57204610A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144859A (en) * | 1974-08-16 | 1976-04-16 | Rca Corp |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59211307A (en) * | 1983-05-16 | 1984-11-30 | Nec Corp | Current mirror circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57206113A (en) | Amplifier for limiter | |
JPS57173220A (en) | Comparator circuit | |
JPS5742208A (en) | Amplifying circuit for direct coupling circuit | |
JPS56147212A (en) | Integrated circuit for generation of reference voltage | |
JPS5718109A (en) | Sound volume controlling circuit | |
JPS5737908A (en) | Output amplifying circuit | |
ES8202210A1 (en) | Voltage and temperature stabilized constant current source circuit | |
JPS57204610A (en) | Current source circuit | |
JPS5592006A (en) | Amplifier | |
JPS5643808A (en) | Signal converting circuit | |
JPS5597619A (en) | Reference signal generating circuit | |
JPS57103414A (en) | Current source circuit | |
JPS5783912A (en) | Current amplifying circuit | |
JPS5792909A (en) | Power amplifying circuit | |
JPS56168243A (en) | Constant-voltage circuit | |
JPS5760709A (en) | Bias system for amplifying circuit | |
JPS647719A (en) | Transmitting power control circuit | |
AU545713B2 (en) | Interface arrangement | |
GB1465036A (en) | Amplifier circuit | |
EP0180337A3 (en) | Buffer circuit | |
JPS5685849A (en) | Semiconductor integrated circuit | |
JPS57184323A (en) | Current source circuit | |
JPS5539056A (en) | Main voltage detecting circuit | |
JPS5795709A (en) | Divided voltage supply circuit for monolithic ic | |
JPS57203114A (en) | Power supply circuit |