WO2001005037A3 - Sigma-delta modulator - Google Patents

Sigma-delta modulator

Info

Publication number
WO2001005037A3
WO2001005037A3 PCT/DK2000/000382 DK0000382W WO2001005037A3 WO 2001005037 A3 WO2001005037 A3 WO 2001005037A3 DK 0000382 W DK0000382 W DK 0000382W WO 2001005037 A3 WO2001005037 A3 WO 2001005037A3
Authority
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

Links

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 (1)

Application Number Priority Date Filing Date Title
EP20000945653 EP1212837A2 (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

Similar Documents

Publication Publication Date Title
US5313205A (en) Method for varying the interpolation ratio of a digital oversampling digital-to-analog converter system and apparatus therefor
US7130346B2 (en) Method and apparatus having a digital PWM signal generator with integral noise shaping
US6018262A (en) CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter
US5835044A (en) 1-Bit A/D converting device with reduced noise component
US4982427A (en) Integrated circuit for telephone set with signal envelope detector
JPH07254823A (en) Delta sigma modulation amplifier
US5550544C1 (en) Signal converter noise shaper ad converter and da converter
JP2000049613A (en) Digital switching amplifier
US7495593B2 (en) Sigma-delta modulator capable of compensating a time delay
Katz SSPA linearization
JPH10233634A (en) Driving method for digital switching amplifier
US20140159930A1 (en) Sigma-delta modulators with high speed feed-forward architecture
US20040036531A1 (en) Amplification circuitry
US7345608B2 (en) Delta-Sigma DAC
JPS62287717A (en) Digital/analog conversion circuit
JP2002100992A (en) Δσ type ad converter
US6738002B2 (en) SD-ADC with digital dither signal processing
JPS6339216A (en) Delta/sigma type a/d converter
JPH04328921A (en) Parallel spread spectrum modulator-demodulator
US8324969B2 (en) Delta-sigma modulator approach to increased amplifier gain resolution
WO2008081887A1 (en) Δσ modulation digital-analog converter, digital signal processing method, and av device
US7030797B2 (en) Broadband sigma-delta modulator
JPH0563457A (en) Delta/sigma modulation amplifier
JPS61177819A (en) Oversampling type digital/analog converter
US20140301572A1 (en) Systems and methods for compressing a digital signal in a digital microphone system

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ CZ DE DE DK DK DM DZ EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ CZ DE DE DK DK DM DZ EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 2000945653

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 008101108

Country of ref document: CN

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 2000945653

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 10030603

Country of ref document: US

WWW Wipo information: withdrawn in national office

Ref document number: 2000945653

Country of ref document: EP

NENP Non-entry into the national phase in:

Ref country code: JP