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IL135320A0 - Differential output stage for electronic equipment - Google Patents

Differential output stage for electronic equipment

Info

Publication number
IL135320A0
IL135320A0 IL13532000A IL13532000A IL135320A0 IL 135320 A0 IL135320 A0 IL 135320A0 IL 13532000 A IL13532000 A IL 13532000A IL 13532000 A IL13532000 A IL 13532000A IL 135320 A0 IL135320 A0 IL 135320A0
Authority
IL
Israel
Prior art keywords
route
voltage
current
output
feedback voltage
Prior art date
Application number
IL13532000A
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of IL135320A0 publication Critical patent/IL135320A0/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • 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
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3211—Modifications of amplifiers to reduce non-linear distortion in differential amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3081—Duplicated single-ended push-pull arrangements, i.e. bridge circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/135—Indexing scheme relating to amplifiers there being a feedback over one or more internal stages in the global amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/387—A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/411—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising two power stages
    • 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
    • H03F2203/45134—Indexing scheme relating to differential amplifiers the whole differential amplifier together with other coupled stages being fully differential realised

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Electromagnetism (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Selective Calling Equipment (AREA)
  • Transmitters (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The differential stage comprises two routes each connecting an input (Ea, Eb) to an output (Sa, Sb), each route comprising a first device (1a, 1b) for adding a feedback voltage from the other route to the input voltage of the considered route. There is a second device in the form of subtractor (2a, 2b) for providing the feedback voltage to the other route. Capacitors (C2a, C2b) provide a feedback voltage from the other route, so that the feedback voltage is a function only of the AC component of the outp voltage of the first device (1a, 1b). The first device also adds a DC voltage (VCA VCB) to the output voltage of that route. Each route includes a transistor (Ta, Tb) for adding a supplementary DC current to a current delivered by the first device that route at the output. There is also a low-pass filter (3a, 3b) and a stage amplifier (4a, 4b) for controlling the supplement current as a function of the DC component of the current delivered by the first device (1a, 1b). This annuls the DC component of that current. The output terminals (Sa, Sb) are connected by line (L) with resistances for matching and protection (Rsa, Rsb) to terminal (T) represented by a resistance (Rcc) and a capacitance (Cal) in series with an AC resistance (Ral).
IL13532000A 1999-04-08 2000-03-28 Differential output stage for electronic equipment IL135320A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9904387A FR2792124B1 (en) 1999-04-08 1999-04-08 DIFFERENTIAL STAGE OF ELECTRONIC EQUIPMENT OUTPUT, WHICH ALLOWS TO POWER A TERMINAL

Publications (1)

Publication Number Publication Date
IL135320A0 true IL135320A0 (en) 2001-05-20

Family

ID=9544159

Family Applications (1)

Application Number Title Priority Date Filing Date
IL13532000A IL135320A0 (en) 1999-04-08 2000-03-28 Differential output stage for electronic equipment

Country Status (9)

Country Link
EP (1) EP1043832B1 (en)
KR (1) KR20010014698A (en)
AT (1) ATE385067T1 (en)
AU (1) AU2521100A (en)
CA (1) CA2300631A1 (en)
DE (1) DE60037847T2 (en)
FR (1) FR2792124B1 (en)
IL (1) IL135320A0 (en)
SG (1) SG80093A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161693A (en) * 1977-03-09 1979-07-17 Airpax Electronics, Inc. Clamped input common mode rejection amplifier
FR2660509B1 (en) * 1990-03-29 1993-11-19 Alcatel Cit DIFFERENTIAL STAGE OF ELECTRONIC EQUIPMENT OUTPUT.
US5345190A (en) * 1993-08-02 1994-09-06 Motorola, Inc. Modular low voltage filter with common mode feedback

Also Published As

Publication number Publication date
CA2300631A1 (en) 2000-10-08
FR2792124B1 (en) 2001-06-15
DE60037847D1 (en) 2008-03-13
FR2792124A1 (en) 2000-10-13
KR20010014698A (en) 2001-02-26
SG80093A1 (en) 2001-04-17
EP1043832A1 (en) 2000-10-11
EP1043832B1 (en) 2008-01-23
DE60037847T2 (en) 2009-01-22
AU2521100A (en) 2000-10-12
ATE385067T1 (en) 2008-02-15

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