GB0724380D0 - Automatic gain control for delta-sigma modulator - Google Patents

Automatic gain control for delta-sigma modulator

Info

Publication number
GB0724380D0
GB0724380D0 GB0724380A GB0724380A GB0724380D0 GB 0724380 D0 GB0724380 D0 GB 0724380D0 GB 0724380 A GB0724380 A GB 0724380A GB 0724380 A GB0724380 A GB 0724380A GB 0724380 D0 GB0724380 D0 GB 0724380D0
Authority
GB
United Kingdom
Prior art keywords
delta
gain control
automatic gain
sigma modulator
modulator
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Withdrawn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
GB0724380A
Other versions
GB2457010A (en
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.)
Ubidyne Inc
Original Assignee
Ubidyne Inc
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 Ubidyne Inc filed Critical Ubidyne Inc
Priority to GB0724380A priority Critical patent/GB2457010A/en
Publication of GB0724380D0 publication Critical patent/GB0724380D0/en
Priority to PCT/EP2008/066459 priority patent/WO2009074470A1/en
Publication of GB2457010A publication Critical patent/GB2457010A/en
Withdrawn legal-status Critical Current

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
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/478—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication
    • H03M3/48—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication characterised by the type of range control, e.g. limiting
    • H03M3/482—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication characterised by the type of range control, e.g. limiting by adapting the quantisation step size
    • H03M3/484—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication characterised by the type of range control, e.g. limiting by adapting the quantisation step size by adapting the gain of the feedback signal, e.g. by adapting the reference values of the digital/analogue converter in the feedback path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • 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
    • H03M3/402—Arrangements specific to bandpass modulators
    • H03M3/404—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used
    • H03M3/408—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used by the use of an LC circuit
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB0724380A 2007-12-13 2007-12-13 Automatic gain control for delta sigma modulators Withdrawn GB2457010A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0724380A GB2457010A (en) 2007-12-13 2007-12-13 Automatic gain control for delta sigma modulators
PCT/EP2008/066459 WO2009074470A1 (en) 2007-12-13 2008-11-28 Automatic gain control for delta-sigma modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0724380A GB2457010A (en) 2007-12-13 2007-12-13 Automatic gain control for delta sigma modulators

Publications (2)

Publication Number Publication Date
GB0724380D0 true GB0724380D0 (en) 2008-01-30
GB2457010A GB2457010A (en) 2009-08-05

Family

ID=39048089

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0724380A Withdrawn GB2457010A (en) 2007-12-13 2007-12-13 Automatic gain control for delta sigma modulators

Country Status (2)

Country Link
GB (1) GB2457010A (en)
WO (1) WO2009074470A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9912144B2 (en) * 2014-09-04 2018-03-06 Analog Devices Global Embedded overload protection in delta-sigma analog-to-digital converters
US9590590B2 (en) 2014-11-10 2017-03-07 Analog Devices Global Delta-sigma modulator having transconductor network for dynamically tuning loop filter coefficients
FR3030941B1 (en) * 2014-12-22 2018-10-05 Thales SIGMA-DELTA LOADING LOOP AND MODULATOR COMPRISING SUCH A LOADING LOOP.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4434439A (en) * 1982-02-22 1984-02-28 Rca Corporation Digital television AGC arrangement
US5729230A (en) * 1996-01-17 1998-03-17 Hughes Aircraft Company Delta-Sigma Δ-Σ modulator having a dynamically tunable continuous time Gm-C architecture
US6278750B1 (en) * 1997-08-30 2001-08-21 Winbond Electronics Corp. Fully integrated architecture for improved sigma-delta modulator with automatic gain controller
WO2002063773A2 (en) * 2001-02-08 2002-08-15 Analog Devices, Inc. Multi-bit sigma-delta analog to digital converter with a variablefull scale
JP4122325B2 (en) * 2004-10-01 2008-07-23 松下電器産業株式会社 Delta-sigma modulation circuit with gain control function
US7307564B1 (en) * 2004-10-25 2007-12-11 Hrl Laboratories, Llc Continuous-time delta-sigma modulators using distributed resonators
DE602005015472D1 (en) * 2005-12-22 2009-08-27 Ericsson Telefon Ab L M Adjustment of the input signal level of a sigma-delta converter
US7215270B1 (en) * 2006-04-10 2007-05-08 Intrinsix Corp. Sigma-delta modulator having selectable OSR with optimal resonator coefficient
JP4641282B2 (en) * 2006-06-01 2011-03-02 シャープ株式会社 ΔΣ modulation circuit and oscillation prevention method thereof

Also Published As

Publication number Publication date
WO2009074470A1 (en) 2009-06-18
GB2457010A (en) 2009-08-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)