FR3115426B1 - Amplificateur opérationnel - Google Patents

Amplificateur opérationnel Download PDF

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Publication number
FR3115426B1
FR3115426B1 FR2008822A FR2008822A FR3115426B1 FR 3115426 B1 FR3115426 B1 FR 3115426B1 FR 2008822 A FR2008822 A FR 2008822A FR 2008822 A FR2008822 A FR 2008822A FR 3115426 B1 FR3115426 B1 FR 3115426B1
Authority
FR
France
Prior art keywords
operational amplifier
transistor
node
transistors
pair
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.)
Active
Application number
FR2008822A
Other languages
English (en)
Other versions
FR3115426A1 (fr
Inventor
Philippe Pignolo
Vincent Rabary
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.)
STMicroelectronics Grenoble 2 SAS
Original Assignee
STMicroelectronics Grenoble 2 SAS
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 STMicroelectronics Grenoble 2 SAS filed Critical STMicroelectronics Grenoble 2 SAS
Priority to FR2008822A priority Critical patent/FR3115426B1/fr
Priority to US17/404,457 priority patent/US11611321B2/en
Priority to CN202111007148.4A priority patent/CN114124003A/zh
Priority to CN202122066042.3U priority patent/CN216086592U/zh
Publication of FR3115426A1 publication Critical patent/FR3115426A1/fr
Application granted granted Critical
Publication of FR3115426B1 publication Critical patent/FR3115426B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
    • H03F3/45273—Mirror types
    • 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
    • H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • 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
    • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/301—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in MOSFET amplifiers
    • 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
    • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
    • H03F3/4521—Complementary long tailed pairs having parallel inputs and being supplied in parallel
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/555—A voltage generating circuit being realised for biasing different circuit elements
    • 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
    • H03F2203/45146—At least one op amp being added at the input of a dif amp
    • 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
    • H03F2203/45344—At least one of the AAC sub-circuits being a current mirror

Abstract

Amplificateur opérationnel La présente description concerne un dispositif électronique (10) comprenant : - une paire de premiers transistors (116a, 116b), chaque premier transistor étant relié à un premier nœud (118) par une borne de conduction ; - une paire de deuxièmes transistors (124a, 124b), chaque deuxième transistor étant relié à un deuxième nœud (126) par une borne de conduction ; et un troisième transistor (130) reliant les premier (118) et deuxième nœuds (126, 134), la borne de commande du troisième transistor étant reliée à la sortie d'un amplificateur opérationnel (144), l'amplificateur opérationnel étant relié, en entrée, au premier nœud et à un nœud (140) d'application d'une tension de référence. Figure pour l'abrégé : Fig. 2
FR2008822A 2020-08-31 2020-08-31 Amplificateur opérationnel Active FR3115426B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR2008822A FR3115426B1 (fr) 2020-08-31 2020-08-31 Amplificateur opérationnel
US17/404,457 US11611321B2 (en) 2020-08-31 2021-08-17 Operational amplifier
CN202111007148.4A CN114124003A (zh) 2020-08-31 2021-08-30 运算放大器
CN202122066042.3U CN216086592U (zh) 2020-08-31 2021-08-30 电子设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2008822A FR3115426B1 (fr) 2020-08-31 2020-08-31 Amplificateur opérationnel
FR2008822 2020-08-31

Publications (2)

Publication Number Publication Date
FR3115426A1 FR3115426A1 (fr) 2022-04-22
FR3115426B1 true FR3115426B1 (fr) 2023-10-27

Family

ID=74205926

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2008822A Active FR3115426B1 (fr) 2020-08-31 2020-08-31 Amplificateur opérationnel

Country Status (3)

Country Link
US (1) US11611321B2 (fr)
CN (2) CN216086592U (fr)
FR (1) FR3115426B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6194962B1 (en) * 1999-04-13 2001-02-27 Analog Devices, Inc. Adaptive operational amplifier offset voltage trimming system
JP2002076800A (ja) * 2000-08-30 2002-03-15 Nec Corp 電圧減算・加算回路及びそれを実現するｍｏｓ差動増幅回路
US6696894B1 (en) * 2002-06-12 2004-02-24 Analog Devices, Inc. Operational amplifier with independent input offset trim for high and low common mode input voltages
JP5268574B2 (ja) * 2008-11-06 2013-08-21 株式会社東芝 半導体集積回路装置
FR3082016B1 (fr) * 2018-06-01 2023-03-31 St Microelectronics Rousset Procede de generation d'un courant de polarisation d'une paire differentielle de transistors et circuit integre correspondant

Also Published As

Publication number Publication date
US20220069790A1 (en) 2022-03-03
US11611321B2 (en) 2023-03-21
FR3115426A1 (fr) 2022-04-22
CN216086592U (zh) 2022-03-18
CN114124003A (zh) 2022-03-01

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