IT1315978B1 - Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo. - Google Patents

Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo.

Info

Publication number
IT1315978B1
IT1315978B1 IT2000RM000425A ITRM20000425A IT1315978B1 IT 1315978 B1 IT1315978 B1 IT 1315978B1 IT 2000RM000425 A IT2000RM000425 A IT 2000RM000425A IT RM20000425 A ITRM20000425 A IT RM20000425A IT 1315978 B1 IT1315978 B1 IT 1315978B1
Authority
IT
Italy
Prior art keywords
sigma
stability
delta modulator
ecircuited
restore
Prior art date
Application number
IT2000RM000425A
Other languages
English (en)
Inventor
Paolo Cusinato
Andrea Baschirotto
Fabio Pasolini
Original Assignee
St Microelectronics Srl
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 St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT2000RM000425A priority Critical patent/IT1315978B1/it
Publication of ITRM20000425A0 publication Critical patent/ITRM20000425A0/it
Priority to US09/919,509 priority patent/US6489907B2/en
Publication of ITRM20000425A1 publication Critical patent/ITRM20000425A1/it
Application granted granted Critical
Publication of IT1315978B1 publication Critical patent/IT1315978B1/it

Links

Classifications

    • 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
    • H03M3/358—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability
    • H03M3/36—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability by temporarily adapting the operation upon detection of instability conditions
    • H03M3/362—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability by temporarily adapting the operation upon detection of instability conditions in feedback mode, e.g. by reducing the order of the modulator
    • H03M3/364—Continuously compensating for, or preventing, undesired influence of physical parameters of non-linear distortion, e.g. instability by temporarily adapting the operation upon detection of instability conditions in feedback mode, e.g. by reducing the order of the modulator by resetting one or more loop filter stages
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/44—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with provisions for rendering the modulator inherently stable
    • H03M3/446—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with provisions for rendering the modulator inherently stable by a particular choice of poles or zeroes in the z-plane, e.g. by positioning zeroes outside the unit circle, i.e. causing the modulator to operate in a chaotic regime
    • H03M3/448—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with provisions for rendering the modulator inherently stable by a particular choice of poles or zeroes in the z-plane, e.g. by positioning zeroes outside the unit circle, i.e. causing the modulator to operate in a chaotic regime by removing part of the zeroes, e.g. using local feedback loops
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/45—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedforward inputs, i.e. with forward paths from the modulator input to more than one filter stage
    • 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
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/454—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage
IT2000RM000425A 2000-07-31 2000-07-31 Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo. IT1315978B1 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT2000RM000425A IT1315978B1 (it) 2000-07-31 2000-07-31 Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo.
US09/919,509 US6489907B2 (en) 2000-07-31 2001-07-30 Method of re-establishing the stability of a sigma-delta modulator and a circuit for implementing the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2000RM000425A IT1315978B1 (it) 2000-07-31 2000-07-31 Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo.

Publications (3)

Publication Number Publication Date
ITRM20000425A0 ITRM20000425A0 (it) 2000-07-31
ITRM20000425A1 ITRM20000425A1 (it) 2002-01-31
IT1315978B1 true IT1315978B1 (it) 2003-03-26

Family

ID=11454859

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2000RM000425A IT1315978B1 (it) 2000-07-31 2000-07-31 Metodo per ripristinare la stabilita' di un modulatore sigma-delta ecircuito per mettere in pratica tale metodo.

Country Status (2)

Country Link
US (1) US6489907B2 (it)
IT (1) IT1315978B1 (it)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60018573T2 (de) * 2000-10-25 2006-01-19 Stmicroelectronics S.R.L., Agrate Brianza Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis
US7123177B2 (en) * 2000-11-17 2006-10-17 Broadcom Corporation System and method for stabilizing high order sigma delta modulators
US6765520B1 (en) * 2003-04-21 2004-07-20 Texas Instruments Incorporated Method and circuit for jamming digital filter while resetting delta sigma modulator
US6768436B1 (en) * 2003-04-21 2004-07-27 Texas Instruments Incorporated Method and circuit resetting delta sigma modulator
US6992606B2 (en) * 2003-07-09 2006-01-31 Texas Instruments Incorporated Method and circuit for multi-standard sigma-delta modulator
JP2007533180A (ja) * 2004-04-09 2007-11-15 オーディオアシクス エー／エス シグマ・デルタ変調器
US7283075B2 (en) * 2004-08-12 2007-10-16 Silicon Laboratories, Inc. Delta-sigma modulator with selectable noise transfer function
US7358881B2 (en) * 2005-07-22 2008-04-15 Cirrus Logic, Inc. Quantizer overload prevention for feed-back type delta-sigma modulators
US7215270B1 (en) * 2006-04-10 2007-05-08 Intrinsix Corp. Sigma-delta modulator having selectable OSR with optimal resonator coefficient
FR2907988B1 (fr) * 2006-10-31 2009-01-23 Thales Sa Modulateur sigma-delta
JP2008263258A (ja) * 2007-04-10 2008-10-30 Matsushita Electric Ind Co Ltd デルタシグマ変調回路とそれを用いたデルタシグマａｄ変換装置
EP2327164A2 (en) * 2008-08-15 2011-06-01 Nxp B.V. Sigma delta modulator
FR2938083B1 (fr) * 2008-10-31 2013-03-29 Thales Sa Procede d'amelioration de la resolution et de correction des distorsions pour modulateur sigma-delta et modulateur sigma-delta mettant en oeuvre le procede
FR2956538B1 (fr) * 2010-02-15 2012-03-16 St Microelectronics Sa Convertisseur analogique/numerique a temps continu
CN102340314A (zh) * 2010-07-28 2012-02-01 中兴通讯股份有限公司 一种∑-δ调制器
US8405535B1 (en) * 2011-08-08 2013-03-26 Altera Corporation Integrated circuit with configurable analog to digital converter
US8884796B2 (en) * 2011-10-20 2014-11-11 Kathrein-Werke Kg Delta-sigma modulator with feedback signal modification
US9385837B2 (en) 2013-01-18 2016-07-05 Avago Technologies General Ip (Singapore) Pte. Ltd. Cascaded viterbi bitstream generator
US9628106B1 (en) * 2014-01-24 2017-04-18 Avnera Corporation Analog to digital converters with oversampling
CN109891752B (zh) 2016-10-25 2021-02-09 华为技术有限公司 接收机
US10033400B1 (en) 2017-10-18 2018-07-24 Schweitzer Engineering Laboratories, Inc. Analog-to-digital converter verification using quantization noise properties
US9985646B1 (en) 2017-10-18 2018-05-29 Schweitzer Engineering Laboratories, Inc. Analog-to-digital converter verification using quantization noise properties

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012244A (en) * 1989-10-27 1991-04-30 Crystal Semiconductor Corporation Delta-sigma modulator with oscillation detect and reset circuit
JP3048452B2 (ja) * 1990-11-30 2000-06-05 株式会社東芝 Ａｄ変換器
FI88765C (fi) * 1991-04-09 1993-06-28 Nokia Mobile Phones Ltd Foerfarande och arrangemang foer stabilering av en hoegre grads sigma-delta-modulator
FI96649C (fi) * 1994-06-07 1996-07-25 Fincitec Oy Ylinäytteistetty korkeamman asteluvun modulaattori
US5742246A (en) * 1996-03-22 1998-04-21 National Science Council Stabilizing mechanism for sigma-delta modulator
US5757301A (en) * 1997-05-01 1998-05-26 National Science Council Instability recovery method for sigma-delta modulators
US6061009A (en) * 1998-03-30 2000-05-09 Silicon Laboratories, Inc. Apparatus and method for resetting delta-sigma modulator state variables using feedback impedance
US6157331A (en) * 1998-10-01 2000-12-05 Tritech Microelectronics, Ltd. Sigma delta modulator with automatic saturation detection and recovery

Also Published As

Publication number Publication date
US20020030618A1 (en) 2002-03-14
ITRM20000425A0 (it) 2000-07-31
ITRM20000425A1 (it) 2002-01-31
US6489907B2 (en) 2002-12-03

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