WO2001005037A3 - Sigma-delta modulator - Google Patents

Sigma-delta modulator Download PDF

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Publication number
WO2001005037A3
WO2001005037A3 PCT/DK2000/000382 DK0000382W WO0105037A3 WO 2001005037 A3 WO2001005037 A3 WO 2001005037A3 DK 0000382 W DK0000382 W DK 0000382W WO 0105037 A3 WO0105037 A3 WO 0105037A3
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WO
Grant status
Application
Patent type
Prior art keywords
sigma
delta
delta modulator
invention introduces
basically
Prior art date
Application number
PCT/DK2000/000382
Other languages
French (fr)
Other versions
WO2001005037A2 (en )
Inventor
Torben Amtoft
Original Assignee
Torben Amtoft
Telital R & D Denmark As
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

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Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00Conversion of analogue values to or from differential modulation
    • H03M3/30Delta-sigma modulation
    • H03M3/458Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/478Means 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
    • H03M3/48Means 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
    • H03M3/482Means 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
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00Conversion of analogue values to or from differential modulation
    • H03M3/30Delta-sigma modulation
    • H03M3/458Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/478Means 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
    • H03M3/488Means 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 using automatic control
    • H03M3/49Means 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 using automatic control in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values

Abstract

The invention relates to an adaptive differential sigma-delta modulator, wherein delta is adapted to the input and/or output signal. Basically, the invention introduces a new approach within the field of sigma-delta converters, as the invention introduces a non-fixed Δ value and consequently a variable quantisation noise.
PCT/DK2000/000382 1999-07-09 2000-07-10 Sigma-delta modulator WO2001005037A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DKPA199901004 1999-07-09
DK199901004A DK199901004A (en) 1999-07-09 1999-07-09 Sigma-delta modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20000945653 EP1212837A2 (en) 1999-07-09 2000-07-10 Sigma-delta modulator
AU5965700A AU5965700A (en) 1999-07-09 2000-07-10 Sigma-delta modulator

Publications (2)

Publication Number Publication Date
WO2001005037A2 true WO2001005037A2 (en) 2001-01-18
WO2001005037A3 true true WO2001005037A3 (en) 2001-09-27

Family

ID=8099934

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2000/000382 WO2001005037A3 (en) 1999-07-09 2000-07-10 Sigma-delta modulator

Country Status (4)

Country Link
EP (1) EP1212837A2 (en)
CN (1) CN1360759A (en)
DK (1) DK199901004A (en)
WO (1) WO2001005037A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4539446B2 (en) 2004-06-24 2010-09-08 ソニー株式会社 Delta-sigma modulator and a delta-sigma modulation method
CN101499282B (en) 2008-02-03 2012-03-07 深圳艾科创新微电子有限公司 Voice A/D conversion method and device
CN101267413B (en) 2008-03-18 2011-04-27 北京天碁科技有限公司 RF transmission method and system and vibration wave generator, sigma-delta modulator and mobile terminal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311181A (en) * 1990-01-31 1994-05-10 Analog Devices, Inc. Sigma delta modulator
EP0645893A1 (en) * 1993-09-24 1995-03-29 Advanced Micro Devices Inc. Analog-to-digital converters with dither signal
US5471209A (en) * 1994-03-03 1995-11-28 Echelon Corporation Sigma-delta converter having a digital logic gate core
US5844514A (en) * 1994-11-01 1998-12-01 Forsvarets Forskningsanstalt Analog-to-digital converter and sensor device comprising such a converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311181A (en) * 1990-01-31 1994-05-10 Analog Devices, Inc. Sigma delta modulator
EP0645893A1 (en) * 1993-09-24 1995-03-29 Advanced Micro Devices Inc. Analog-to-digital converters with dither signal
US5471209A (en) * 1994-03-03 1995-11-28 Echelon Corporation Sigma-delta converter having a digital logic gate core
US5844514A (en) * 1994-11-01 1998-12-01 Forsvarets Forskningsanstalt Analog-to-digital converter and sensor device comprising such a converter

Also Published As

Publication number Publication date Type
WO2001005037A2 (en) 2001-01-18 application
CN1360759A (en) 2002-07-24 application
DK100499A (en) application
EP1212837A2 (en) 2002-06-12 application
DK199901004A (en) 2001-01-10 application

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