EP1213636A3 - Current mirror circuit - Google Patents

Current mirror circuit Download PDF

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Publication number
EP1213636A3
EP1213636A3 EP01127473A EP01127473A EP1213636A3 EP 1213636 A3 EP1213636 A3 EP 1213636A3 EP 01127473 A EP01127473 A EP 01127473A EP 01127473 A EP01127473 A EP 01127473A EP 1213636 A3 EP1213636 A3 EP 1213636A3
Authority
EP
European Patent Office
Prior art keywords
current
output
mirror circuit
branch
current mirror
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.)
Withdrawn
Application number
EP01127473A
Other languages
German (de)
French (fr)
Other versions
EP1213636A2 (en
Inventor
Johannes Gerber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Deutschland GmbH
Original Assignee
Texas Instruments Deutschland GmbH
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
Application filed by Texas Instruments Deutschland GmbH filed Critical Texas Instruments Deutschland GmbH
Publication of EP1213636A2 publication Critical patent/EP1213636A2/en
Publication of EP1213636A3 publication Critical patent/EP1213636A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/267—Current mirrors using both bipolar and field-effect technology

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

A current mirror circuit serves to produce an output current flowing in an output branch corresponding to a reference current flowing in an input branch located between a supply voltage terminal and ground. Located in the input branch is a first bipolar transistor (10) through the collector/emitter circuit of which the reference current furnished by a current source (14) connected to the collector flows. Through the collector/emitter circuit of a second bipolar transistor (12) located in the output branch the output current flows. The bases of the two transistors (10, 12) are connected to each other. A further current mirror circuit (16, 18, 20) is provided having an input branch located between the supply voltage terminal and ground and an output branch located between the supply voltage terminal and the connected bases of the two bipolar transistors (10, 12) for generating a base current (Ib) for these transistors. A current source (20) controlled by the collector voltage of the first bipolar transistor (10) is located in the input branch of this further current mirror circuit (16, 18, 20), the output current (2Ib) of said current source (20) being mirrored in the output branch of said further current mirror circuit (16, 18, 20).
EP01127473A 2000-12-07 2001-11-28 Current mirror circuit Withdrawn EP1213636A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10060842 2000-12-07
DE2000160842 DE10060842C2 (en) 2000-12-07 2000-12-07 Current mirror circuit

Publications (2)

Publication Number Publication Date
EP1213636A2 EP1213636A2 (en) 2002-06-12
EP1213636A3 true EP1213636A3 (en) 2004-08-04

Family

ID=7666157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127473A Withdrawn EP1213636A3 (en) 2000-12-07 2001-11-28 Current mirror circuit

Country Status (2)

Country Link
EP (1) EP1213636A3 (en)
DE (1) DE10060842C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1387234A1 (en) * 2002-07-29 2004-02-04 Motorola Energy Systems Inc. Current copy circuit arrangement
US7170337B2 (en) 2004-04-20 2007-01-30 Sige Semiconductor (U.S.), Corp. Low voltage wide ratio current mirror
DE102005019157A1 (en) 2005-04-25 2006-10-26 Robert Bosch Gmbh Metal oxide semiconductor field effect transistor arrangement for use in integrated circuit, has source and gate connections of transistors that are connected with each other and that contact connections of chip, respectively
US9496880B1 (en) * 2015-08-14 2016-11-15 Qualcomm Incorporated Fully differential charge pump with switched-capacitor common-mode feedback
CN108491021A (en) * 2018-04-04 2018-09-04 浙江天狼半导体有限责任公司 A kind of current mirroring circuit that tool temperature is anti-

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024422A1 (en) * 1980-06-28 1982-01-21 Philips Patentverwaltung Gmbh, 2000 Hamburg Monolithic integrated image current circuit - has five transistors to produce image ratio of up to 0.999
EP0443239A1 (en) * 1990-02-20 1991-08-28 Precision Monolithics Inc. Current mirror with base current compensation
US5675243A (en) * 1995-05-31 1997-10-07 Motorola, Inc. Voltage source device for low-voltage operation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06138967A (en) * 1992-10-26 1994-05-20 Matsushita Electric Ind Co Ltd Current mirror circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024422A1 (en) * 1980-06-28 1982-01-21 Philips Patentverwaltung Gmbh, 2000 Hamburg Monolithic integrated image current circuit - has five transistors to produce image ratio of up to 0.999
EP0443239A1 (en) * 1990-02-20 1991-08-28 Precision Monolithics Inc. Current mirror with base current compensation
US5675243A (en) * 1995-05-31 1997-10-07 Motorola, Inc. Voltage source device for low-voltage operation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0184, no. 41 (P - 1788) 17 August 1994 (1994-08-17) *

Also Published As

Publication number Publication date
EP1213636A2 (en) 2002-06-12
DE10060842A1 (en) 2002-07-11
DE10060842C2 (en) 2002-11-28

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