FR2283484A1 - Transistor current source - independent of temperature and supply voltage for logic circuit integration - Google Patents

Transistor current source - independent of temperature and supply voltage for logic circuit integration

Info

Publication number
FR2283484A1
FR2283484A1 FR7526252A FR7526252A FR2283484A1 FR 2283484 A1 FR2283484 A1 FR 2283484A1 FR 7526252 A FR7526252 A FR 7526252A FR 7526252 A FR7526252 A FR 7526252A FR 2283484 A1 FR2283484 A1 FR 2283484A1
Authority
FR
France
Prior art keywords
transistor
supply voltage
temperature
independent
circuit integration
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Withdrawn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
FR7526252A
Other languages
French (fr)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2283484A1 publication Critical patent/FR2283484A1/en
Withdrawn legal-status Critical Current

Links

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
    • G05F3/22—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • G05F3/222—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage
    • G05F3/227—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage producing a current or voltage as a predetermined function of the supply voltage
    • 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
    • G05F3/22—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Logic Circuits (AREA)
  • Amplifiers (AREA)

Abstract

In this constant current circuit, the normal amplifier emitter resistance is replaced by a transistor (T11) or multiple transistors in parallel (T1). The base of this transistor is connected to an emitter follower (T2) which is, in turn, coupled to the collector of a sensing transistor whose base is at the junction of two resistance (R5, R6) acting as a potential divider across the supply (Uo, Uv). The combined resistance of these two equals the ratio of the collector and base resistors of the sensing transistor and the emitter follower current is lower than that in the emitter replacement transistor. This provides a circuit that, in circuit integration, gives a source current independent of temperature and supply voltage.
FR7526252A 1974-08-30 1975-08-26 Transistor current source - independent of temperature and supply voltage for logic circuit integration Withdrawn FR2283484A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742441745 DE2441745A1 (en) 1974-08-30 1974-08-30 TEMPERATURE AND SUPPLY VOLTAGE INDEPENDENT POWER SOURCE

Publications (1)

Publication Number Publication Date
FR2283484A1 true FR2283484A1 (en) 1976-03-26

Family

ID=5924554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7526252A Withdrawn FR2283484A1 (en) 1974-08-30 1975-08-26 Transistor current source - independent of temperature and supply voltage for logic circuit integration

Country Status (6)

Country Link
BE (1) BE832913A (en)
CH (1) CH585932A5 (en)
DE (1) DE2441745A1 (en)
FR (1) FR2283484A1 (en)
IT (1) IT1042053B (en)
NL (1) NL7509890A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129936A1 (en) * 1983-06-22 1985-01-02 Koninklijke Philips Electronics N.V. Current source circuit arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825058A1 (en) * 1988-07-23 1990-01-25 Telefunken Electronic Gmbh Control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129936A1 (en) * 1983-06-22 1985-01-02 Koninklijke Philips Electronics N.V. Current source circuit arrangement

Also Published As

Publication number Publication date
IT1042053B (en) 1980-01-30
NL7509890A (en) 1976-03-02
BE832913A (en) 1976-03-01
CH585932A5 (en) 1977-03-15
DE2441745A1 (en) 1976-03-18

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Legal Events

Date Code Title Description
ST Notification of lapse