JPS62165413A - Current mirror circuit - Google Patents

Current mirror circuit

Info

Publication number
JPS62165413A
JPS62165413A JP645086A JP645086A JPS62165413A JP S62165413 A JPS62165413 A JP S62165413A JP 645086 A JP645086 A JP 645086A JP 645086 A JP645086 A JP 645086A JP S62165413 A JPS62165413 A JP S62165413A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
current mirror
current
tr
base
circuit
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
Application number
JP645086A
Other versions
JP2594911B2 (en )
Inventor
Kazuo Kato
Takashi Sase
Hideo Sato
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To attain low voltage operation and to attain the highly accurate operation of a circuit by detecting the operating voltages of a pair of transistors (TR) constituting a current mirror by a differential amplifier and executing the negative feedback control of the base bias voltage of the succeeding current mirror.
CONSTITUTION: The base of a TR 202 in a current mirror circuit 20 is forward biased by a TR 201 diode-connected to the 202 based on current flowing from a constant current source 40 in a signal circuit and current is supplied to a TR 102 in a current mirror circuit 10. At that time, the differential amplifier 305 executes the negative feedback control of the common base voltage of the current mirror 10 through a resistor 306 and a diode 101 so that the voltage of an input point 212 becomes equal to that of a node 211. Thereby, the voltages of the nodes 211, 212 are equally set up by the differential amplifier 305 in the steady state and the base current of the current mirror 10 is properly supplied.
COPYRIGHT: (C)1987,JPO&Japio
JP645086A 1986-01-17 1986-01-17 Current mirror circuit Expired - Fee Related JP2594911B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP645086A JP2594911B2 (en) 1986-01-17 1986-01-17 Current mirror circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP645086A JP2594911B2 (en) 1986-01-17 1986-01-17 Current mirror circuit

Publications (2)

Publication Number Publication Date
JPS62165413A true true JPS62165413A (en) 1987-07-22
JP2594911B2 JP2594911B2 (en) 1997-03-26

Family

ID=11638758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP645086A Expired - Fee Related JP2594911B2 (en) 1986-01-17 1986-01-17 Current mirror circuit

Country Status (1)

Country Link
JP (1) JP2594911B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03143221A (en) * 1989-10-26 1991-06-18 Fuji Electric Co Ltd Overcurrent detector
JP2005062837A (en) * 2003-07-28 2005-03-10 Rohm Co Ltd Organic el drive circuit and organic el display device using the same
JP2006133570A (en) * 2004-11-08 2006-05-25 Matsushita Electric Ind Co Ltd Device for driving current
JP2013066097A (en) * 2011-09-20 2013-04-11 New Japan Radio Co Ltd Sampling circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416020A (en) * 1977-07-06 1979-02-06 Mazda Motor Corp Exhaust gas purifier for engine
JPS54136261A (en) * 1978-04-14 1979-10-23 Nec Corp Current inversion circuit
JPS56162517A (en) * 1980-05-20 1981-12-14 Nec Corp Current miller circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416020A (en) * 1977-07-06 1979-02-06 Mazda Motor Corp Exhaust gas purifier for engine
JPS54136261A (en) * 1978-04-14 1979-10-23 Nec Corp Current inversion circuit
JPS56162517A (en) * 1980-05-20 1981-12-14 Nec Corp Current miller circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03143221A (en) * 1989-10-26 1991-06-18 Fuji Electric Co Ltd Overcurrent detector
JP2005062837A (en) * 2003-07-28 2005-03-10 Rohm Co Ltd Organic el drive circuit and organic el display device using the same
JP2006133570A (en) * 2004-11-08 2006-05-25 Matsushita Electric Ind Co Ltd Device for driving current
JP2013066097A (en) * 2011-09-20 2013-04-11 New Japan Radio Co Ltd Sampling circuit

Also Published As

Publication number Publication date Type
JP2594911B2 (en) 1997-03-26 grant

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees