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WO2004049557A3 - High-speed class-ab transconductance stage - Google Patents

High-speed class-ab transconductance stage Download PDF

Info

Publication number
WO2004049557A3
WO2004049557A3 PCT/IB2003/005299 IB0305299W WO2004049557A3 WO 2004049557 A3 WO2004049557 A3 WO 2004049557A3 IB 0305299 W IB0305299 W IB 0305299W WO 2004049557 A3 WO2004049557 A3 WO 2004049557A3
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
transistor
transconductance stage
speed class
ground
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.)
Ceased
Application number
PCT/IB2003/005299
Other languages
French (fr)
Other versions
WO2004049557A2 (en
Inventor
Mike H Splithof
Paulus P F M Bruin
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to AU2003280113A priority Critical patent/AU2003280113A1/en
Publication of WO2004049557A2 publication Critical patent/WO2004049557A2/en
Publication of WO2004049557A3 publication Critical patent/WO2004049557A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/083—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements in transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/22—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • H03F3/45085—Long tailed pairs
    • H03F3/45094—Folded cascode stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/261—Amplifier which being suitable for instrumentation applications
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45114—Indexing scheme relating to differential amplifiers the differential amplifier contains another differential amplifier in its feedback circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45431—Indexing scheme relating to differential amplifiers the CMCL output control signal being a current signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45521—Indexing scheme relating to differential amplifiers the FBC comprising op amp stages, e.g. cascaded stages of the dif amp and being coupled between the LC and the IC

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

A transconductance stage comprises a first transistor wherein a base terminal of the first transistor is a first input terminal; a collector terminal of the first transistor is a first output terminal; a first operational amplifier is connected by its output to an emitter terminal of the first transistor and to its own inverting input terminal; an input voltage source is connected by one terminal to the base terminal of the first transistor and by another terminal to ground; and a reference voltage source is connected by one terminal to a non-inverting input terminal of the first operational amplifier and by another terminal to ground.
PCT/IB2003/005299 2002-11-28 2003-11-20 High-speed class-ab transconductance stage Ceased WO2004049557A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003280113A AU2003280113A1 (en) 2002-11-28 2003-11-20 High-speed class-ab transconductance stage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02079977 2002-11-28
EP02079977.1 2002-11-28

Publications (2)

Publication Number Publication Date
WO2004049557A2 WO2004049557A2 (en) 2004-06-10
WO2004049557A3 true WO2004049557A3 (en) 2004-08-26

Family

ID=32338123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/005299 Ceased WO2004049557A2 (en) 2002-11-28 2003-11-20 High-speed class-ab transconductance stage

Country Status (2)

Country Link
AU (1) AU2003280113A1 (en)
WO (1) WO2004049557A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11025213B2 (en) 2019-06-11 2021-06-01 Texas Instruments Incorporated Output pole-compensated operational amplifier

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091295A (en) * 1975-10-08 1978-05-23 Tokyo Shibaura Electric Co., Ltd. Transistor circuit
US4622459A (en) * 1984-08-06 1986-11-11 Professional Technologies Corp. Tonometer with optical sensing and variable attenuator
JPS6218103A (en) * 1985-07-17 1987-01-27 Toshiba Corp Limiter circuit
US4798973A (en) * 1987-05-13 1989-01-17 Texas Instruments Incorporated High frequency charge pump/integrator circuit
US5319263A (en) * 1992-05-29 1994-06-07 Eastman Kodak Company Power saving impedance transformation circuit for CCD image sensors
JPH11299218A (en) * 1998-04-17 1999-10-29 Mitsubishi Electric Corp Insulated gate semiconductor device with overcurrent detection function
US6414549B1 (en) * 1996-12-30 2002-07-02 Anthony T. Barbetta Wide bandwidth, current sharing, MOSFET audio power amplifier with multiple feedback loops

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091295A (en) * 1975-10-08 1978-05-23 Tokyo Shibaura Electric Co., Ltd. Transistor circuit
US4622459A (en) * 1984-08-06 1986-11-11 Professional Technologies Corp. Tonometer with optical sensing and variable attenuator
JPS6218103A (en) * 1985-07-17 1987-01-27 Toshiba Corp Limiter circuit
US4798973A (en) * 1987-05-13 1989-01-17 Texas Instruments Incorporated High frequency charge pump/integrator circuit
US5319263A (en) * 1992-05-29 1994-06-07 Eastman Kodak Company Power saving impedance transformation circuit for CCD image sensors
US6414549B1 (en) * 1996-12-30 2002-07-02 Anthony T. Barbetta Wide bandwidth, current sharing, MOSFET audio power amplifier with multiple feedback loops
JPH11299218A (en) * 1998-04-17 1999-10-29 Mitsubishi Electric Corp Insulated gate semiconductor device with overcurrent detection function

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 187 (E - 516) 16 June 1987 (1987-06-16) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31) *

Also Published As

Publication number Publication date
WO2004049557A2 (en) 2004-06-10
AU2003280113A1 (en) 2004-06-18

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