GB2256551B - Switched capacitor integrator with chopper stabilisation performed at the sampling rate - Google Patents

Switched capacitor integrator with chopper stabilisation performed at the sampling rate

Info

Publication number
GB2256551B
GB2256551B GB9206964A GB9206964A GB2256551B GB 2256551 B GB2256551 B GB 2256551B GB 9206964 A GB9206964 A GB 9206964A GB 9206964 A GB9206964 A GB 9206964A GB 2256551 B GB2256551 B GB 2256551B
Authority
GB
United Kingdom
Prior art keywords
integrator
sampling rate
switched capacitor
sampled
capacitor integrator
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.)
Expired - Lifetime
Application number
GB9206964A
Other versions
GB2256551A (en
GB9206964D0 (en
Inventor
Donald Allan Kerth
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.)
Crystal Semiconductor Corp
Original Assignee
Crystal Semiconductor Corp
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 Crystal Semiconductor Corp filed Critical Crystal Semiconductor Corp
Priority to GB9514965A priority Critical patent/GB2289811B/en
Publication of GB9206964D0 publication Critical patent/GB9206964D0/en
Publication of GB2256551A publication Critical patent/GB2256551A/en
Application granted granted Critical
Publication of GB2256551B publication Critical patent/GB2256551B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters
    • H03H19/002—N-path filters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements
    • G06G7/186—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements using an operational amplifier comprising a capacitor or a resistor in the feedback loop
    • G06G7/1865—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements using an operational amplifier comprising a capacitor or a resistor in the feedback loop with initial condition setting
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
    • H03M3/326—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors
    • H03M3/338—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors by permutation in the time domain, e.g. dynamic element matching
    • H03M3/34—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by averaging out the errors by permutation in the time domain, e.g. dynamic element matching by chopping
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A switched-capacitor integrator (10) with chopper stabilization performed at the sampling rate virtually eliminates the flicker noise and any low frequency interference generated by the amplifier (12). The integrator samples the input and then passes the sampled input to the feedback capacitor (14) during each chopping phase of the amplifier to thereby provide a double-sampled integrator. The output of the integrator is sampled at the end of each cycle of the chopping signal. <IMAGE>
GB9206964A 1991-06-06 1992-03-31 Switched capacitor integrator with chopper stabilisation performed at the sampling rate Expired - Lifetime GB2256551B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9514965A GB2289811B (en) 1991-06-06 1992-03-31 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71128791A 1991-06-06 1991-06-06

Publications (3)

Publication Number Publication Date
GB9206964D0 GB9206964D0 (en) 1992-05-13
GB2256551A GB2256551A (en) 1992-12-09
GB2256551B true GB2256551B (en) 1996-01-24

Family

ID=24857464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9206964A Expired - Lifetime GB2256551B (en) 1991-06-06 1992-03-31 Switched capacitor integrator with chopper stabilisation performed at the sampling rate

Country Status (3)

Country Link
JP (1) JP2892549B2 (en)
DE (1) DE4218533C2 (en)
GB (1) GB2256551B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278247A (en) * 1993-05-17 1994-11-23 Nat Science Council Chopper-stabilized sigma-delta converter
JPH0758641A (en) * 1993-06-30 1995-03-03 Natl Sci Council Chopper-stabilized sigma delta type analogue digital converter
JP2519171B2 (en) 1993-12-02 1996-07-31 ナショナル・サイエンス・カウンシル Switched capacitor type digital filter
ES2146634T3 (en) * 1994-03-29 2000-08-16 Cit Alcatel ANALOG / DIGITAL CONVERSION DEVICE FOR LOW AMPLITUDE AND LOW FREQUENCY DIFFERENTIAL SIGNALS.
US5563597A (en) * 1994-06-06 1996-10-08 Analog Devices, Inc. Switched-capacitor one-bit digital-to-analog converter with low sensitivity to op-amp offset voltage
KR0141938B1 (en) * 1994-12-03 1998-07-15 문정환 Delta sigma digital and analog converter
DE19619208A1 (en) * 1996-05-11 1997-11-13 Klugbauer Heilmeier Josef Sigma-delta class D amplifier for CD player
US6433711B1 (en) * 1999-12-14 2002-08-13 Texas Instruments Incorporated System and method for offset error compensation in comparators
DE10031522B9 (en) 2000-06-28 2007-07-12 Infineon Technologies Ag Frequency-compensated amplifier arrangement and method for operating a frequency-compensated amplifier arrangement
DE10032530C2 (en) * 2000-07-05 2002-10-24 Infineon Technologies Ag Amplifier circuit with offset compensation
EP1274171A1 (en) 2001-07-05 2003-01-08 Telefonaktiebolaget L M Ericsson (Publ) Differential line receiver
KR100431747B1 (en) * 2001-11-29 2004-05-17 주식회사 하이닉스반도체 Switched-Capacitor Integrator for erasing switching noise
US6670902B1 (en) * 2002-06-04 2003-12-30 Cirrus Logic, Inc. Delta-sigma modulators with improved noise performance
JP2006033304A (en) * 2004-07-15 2006-02-02 Daio Denki Kk Switched capacitor circuit and pipe line a/d converter
US7518443B2 (en) * 2004-09-10 2009-04-14 Quantum Applied Science & Research, Inc. Amplifier circuit and method for reducing voltage and current noise
JP2006279377A (en) 2005-03-29 2006-10-12 Handotai Rikougaku Kenkyu Center:Kk Chopper amplifier circuit
JP2007214613A (en) * 2006-02-07 2007-08-23 Seiko Instruments Inc Amplifier circuit
KR100947824B1 (en) * 2006-03-29 2010-03-18 주식회사 메디슨 Digital beamforming apparatus adopting a sigma-delta analog-to-digital converter in an ultrasound system
US8106809B2 (en) * 2009-05-12 2012-01-31 Qualcomm Incorporated Sigma-delta converters and methods for analog-to-digital conversion
KR101087246B1 (en) * 2009-09-10 2011-11-29 연세대학교 산학협력단 Switched capacitor circuit
CN101820257B (en) * 2010-04-30 2012-05-30 深圳市芯海科技有限公司 Switched capacitor circuit and analog-to-digital converter
JP5825624B2 (en) * 2011-07-08 2015-12-02 セイコーエプソン株式会社 Switched capacitor integration circuit, filter circuit, physical quantity measuring device, and electronic equipment
JP6632425B2 (en) * 2016-02-26 2020-01-22 旭化成エレクトロニクス株式会社 Incremental delta-sigma modulator, modulation method, and incremental delta-sigma AD converter
JP6796953B2 (en) * 2016-06-02 2020-12-09 エイブリック株式会社 Amplifier circuit and multipath nested mirror amplifier circuit
DE102016219610A1 (en) * 2016-10-10 2018-04-12 Robert Bosch Gmbh Low noise signal filter
US10733391B1 (en) 2019-03-08 2020-08-04 Analog Devices International Unlimited Company Switching scheme for low offset switched-capacitor integrators

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400637A (en) * 1980-04-30 1983-08-23 Siemens Aktiengesellschaft Integrator with sampling stage
US4939516A (en) * 1988-06-13 1990-07-03 Crystal Semiconductor Chopper stabilized delta-sigma analog-to-digital converter
US4972436A (en) * 1988-10-14 1990-11-20 Hayes Microcomputer Products, Inc. High performance sigma delta based analog modem front end
US4994804A (en) * 1988-03-15 1991-02-19 Kabushiki Kaisha Toshiba Double integration delta-sigma modulation analog to digital converter
US5039989A (en) * 1989-10-27 1991-08-13 Crystal Semiconductor Corporation Delta-sigma analog-to-digital converter with chopper stabilization at the sampling frequency

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574250A (en) * 1981-10-13 1986-03-04 Intel Corporation Switched capacitor filter utilizing a differential input and output circuit and method
JPS58130608A (en) * 1982-01-29 1983-08-04 Hitachi Ltd Chopper amplifying circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400637A (en) * 1980-04-30 1983-08-23 Siemens Aktiengesellschaft Integrator with sampling stage
US4994804A (en) * 1988-03-15 1991-02-19 Kabushiki Kaisha Toshiba Double integration delta-sigma modulation analog to digital converter
US4939516A (en) * 1988-06-13 1990-07-03 Crystal Semiconductor Chopper stabilized delta-sigma analog-to-digital converter
US4939516B1 (en) * 1988-06-13 1993-10-26 Crystal Semiconductor Corporation Chopper stabilized delta-sigma analog-to-digital converter
US4972436A (en) * 1988-10-14 1990-11-20 Hayes Microcomputer Products, Inc. High performance sigma delta based analog modem front end
US5039989A (en) * 1989-10-27 1991-08-13 Crystal Semiconductor Corporation Delta-sigma analog-to-digital converter with chopper stabilization at the sampling frequency

Also Published As

Publication number Publication date
DE4218533A1 (en) 1992-12-10
JP2892549B2 (en) 1999-05-17
JPH05175787A (en) 1993-07-13
GB2256551A (en) 1992-12-09
GB9206964D0 (en) 1992-05-13
DE4218533C2 (en) 1994-08-18

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20120330