EP1712973A3 - Circuit generating a reference current - Google Patents

Circuit generating a reference current Download PDF

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Publication number
EP1712973A3
EP1712973A3 EP06112470A EP06112470A EP1712973A3 EP 1712973 A3 EP1712973 A3 EP 1712973A3 EP 06112470 A EP06112470 A EP 06112470A EP 06112470 A EP06112470 A EP 06112470A EP 1712973 A3 EP1712973 A3 EP 1712973A3
Authority
EP
European Patent Office
Prior art keywords
reference current
circuit generating
series
circuit
branch consisting
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Withdrawn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
EP06112470A
Other languages
German (de)
French (fr)
Other versions
EP1712973A2 (en
Inventor
Jean-Luc Moro
Serge Ramet
Marc Sabut
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 SA
Original Assignee
STMicroelectronics SA
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 SA filed Critical STMicroelectronics SA
Publication of EP1712973A2 publication Critical patent/EP1712973A2/en
Publication of EP1712973A3 publication Critical patent/EP1712973A3/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Withdrawn legal-status Critical Current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
    • G05F3/262—Current mirrors using field-effect transistors only

Abstract

L'invention concerne un circuit de génération (40) d'un courant de référence (Ir), comportant, entre deux bornes (2, 3) d'application d'une tension d'alimentation : au moins une première branche constituée d'au moins un premier (MP41) et d'au moins un deuxième transistors (MN41) en série ; au moins une deuxième branche constituée d'au moins un troisième (MP42) et d'au moins un quatrième (MN42) transistors en série avec un circuit (43) à capacité commutée (Cs).

Figure imgaf001
The invention relates to a generating circuit (40) for a reference current (Ir), comprising, between two terminals (2, 3) for applying a supply voltage: at least a first branch consisting of at least one first (MP41) and at least one second transistor (MN41) in series; at least a second branch consisting of at least one third (MP42) and at least one fourth (MN42) transistors in series with a circuit (43) with switched capacity (Cs).
Figure imgaf001
EP06112470A 2005-04-12 2006-04-11 Circuit generating a reference current Withdrawn EP1712973A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0550932 2005-04-12

Publications (2)

Publication Number Publication Date
EP1712973A2 EP1712973A2 (en) 2006-10-18
EP1712973A3 true EP1712973A3 (en) 2007-03-07

Family

ID=35385766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06112470A Withdrawn EP1712973A3 (en) 2005-04-12 2006-04-11 Circuit generating a reference current

Country Status (2)

Country Link
US (1) US20060226892A1 (en)
EP (1) EP1712973A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005311591A (en) * 2004-04-20 2005-11-04 Matsushita Electric Ind Co Ltd Current driver
EP2169824A1 (en) * 2008-09-25 2010-03-31 Moscad Design & Automation Sàrl A switched capacitor error amplifier circuit for generating a precision current reference or for use in a precision oscillator
US8390371B2 (en) * 2010-07-30 2013-03-05 Tialinx, Inc. Tunable transconductance-capacitance filter with coefficients independent of variations in process corner, temperature, and input supply voltage
FR2975246A1 (en) * 2011-05-09 2012-11-16 St Microelectronics Grenoble 2 Sawtooth signal generator for switched-mode power supply, has resistor including switched capacitor circuit that is switched by two complementary clock signals, where period of each clock signal is equal to duration of charging period
EP2887176B1 (en) * 2013-12-20 2022-09-14 The Swatch Group Research and Development Ltd. Electronic circuit with self-calibrated PTAT current reference, and method for operating same
CN104536504B (en) * 2014-12-12 2016-04-06 长沙景嘉微电子股份有限公司 A kind of self-starting reference circuit
CN106055009A (en) * 2016-06-17 2016-10-26 中国科学院微电子研究所 High-precision band-gap reference circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408174A (en) * 1993-06-25 1995-04-18 At&T Corp. Switched capacitor current reference
FR2729762A1 (en) * 1995-01-23 1996-07-26 Sgs Thomson Microelectronics COMPENSATED VOLTAGE DETECTION CIRCUIT IN TECHNOLOGY AND TEMPERATURE
US5694032A (en) * 1996-03-19 1997-12-02 International Business Machines Corporation Band gap current reference circuit
US5969513A (en) * 1998-03-24 1999-10-19 Volterra Semiconductor Corporation Switched capacitor current source for use in switching regulators
US20020180512A1 (en) * 2001-06-01 2002-12-05 Kostas Papathanasiou System and method for tuning a VLSI circuit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354250A (en) * 1980-08-11 1982-10-12 Gte Automatic Electric Laboratories, Inc. Switched-capacitor source resistor simulation circuit
US4374357A (en) * 1981-07-27 1983-02-15 Motorola, Inc. Switched capacitor precision current source
US4429285A (en) * 1981-07-31 1984-01-31 Rca Corporation Frequency-controlled variable-gain amplifiers
US5621355A (en) * 1995-09-29 1997-04-15 Harris Corporation Sampled data-biasing of continuous time integrated circuit
US6191637B1 (en) * 1999-03-05 2001-02-20 National Semiconductor Corporation Switched capacitor bias circuit for generating a reference signal proportional to absolute temperature, capacitance and clock frequency
US6201435B1 (en) * 1999-08-26 2001-03-13 Taiwan Semiconductor Manufacturing Company Low-power start-up circuit for a reference voltage generator
US6323800B1 (en) * 2000-02-17 2001-11-27 Advanced Micro Devices, Inc. Pipeline analog to digital (a/d) converter with lengthened hold operation of a first stage
US6407623B1 (en) * 2001-01-31 2002-06-18 Qualcomm Incorporated Bias circuit for maintaining a constant value of transconductance divided by load capacitance
FR2825806B1 (en) * 2001-06-08 2003-09-12 St Microelectronics Sa POLARIZATION CIRCUIT WITH VOLTAGE AND TEMPERATURE STABLE OPERATING POINT
US7006813B2 (en) * 2001-08-15 2006-02-28 Texas Instruments Incorporated Efficient charge transfer using a switched capacitor resistor
US7019576B1 (en) * 2003-03-24 2006-03-28 Cypress Semiconductor Corporation Delay circuit that scales with clock cycle time
US6784725B1 (en) * 2003-04-18 2004-08-31 Freescale Semiconductor, Inc. Switched capacitor current reference circuit
US7084698B2 (en) * 2004-10-14 2006-08-01 Freescale Semiconductor, Inc. Band-gap reference circuit
US7372242B2 (en) * 2004-12-23 2008-05-13 Silicon Laboratories, Inc. System and method for generating a reference voltage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408174A (en) * 1993-06-25 1995-04-18 At&T Corp. Switched capacitor current reference
FR2729762A1 (en) * 1995-01-23 1996-07-26 Sgs Thomson Microelectronics COMPENSATED VOLTAGE DETECTION CIRCUIT IN TECHNOLOGY AND TEMPERATURE
US5694032A (en) * 1996-03-19 1997-12-02 International Business Machines Corporation Band gap current reference circuit
US5969513A (en) * 1998-03-24 1999-10-19 Volterra Semiconductor Corporation Switched capacitor current source for use in switching regulators
US20020180512A1 (en) * 2001-06-01 2002-12-05 Kostas Papathanasiou System and method for tuning a VLSI circuit

Also Published As

Publication number Publication date
EP1712973A2 (en) 2006-10-18
US20060226892A1 (en) 2006-10-12

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