SE509408C2 - Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator - Google Patents
Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulatorInfo
- Publication number
- SE509408C2 SE509408C2 SE9701986A SE9701986A SE509408C2 SE 509408 C2 SE509408 C2 SE 509408C2 SE 9701986 A SE9701986 A SE 9701986A SE 9701986 A SE9701986 A SE 9701986A SE 509408 C2 SE509408 C2 SE 509408C2
- Authority
- SE
- Sweden
- Prior art keywords
- signal
- sigma
- discrete
- integrated
- period length
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000000737 periodic effect Effects 0.000 title claims abstract description 18
- 238000005070 sampling Methods 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 9
- 238000013139 quantization Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 10
- 238000007792 addition Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- PQVHMOLNSYFXIJ-UHFFFAOYSA-N 4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]pyrazole-3-carboxylic acid Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(N1CC2=C(CC1)NN=N2)=O)C(=O)O PQVHMOLNSYFXIJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/02—Delta modulation, i.e. one-bit differential modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
- H03M7/3008—Compensating for, or preventing of, undesired influence of physical parameters by averaging out the errors, e.g. using dither
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
- H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M7/3028—Structural details of digital 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
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
- H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
- H03M7/304—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs 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)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9701986A SE509408C2 (sv) | 1997-05-27 | 1997-05-27 | Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator |
JP50058799A JP4027434B2 (ja) | 1997-05-27 | 1998-05-26 | シグマ・デルタ変調器内の周期雑音を低減するための装置並びに方法 |
US09/084,650 US6175321B1 (en) | 1997-05-27 | 1998-05-26 | Apparatus and method for the reduction of periodic noise in a sigma-delta modulator |
EP98926008A EP1080534B1 (en) | 1997-05-27 | 1998-05-26 | Apparatus and method for the reduction of periodic noise in a sigma-delta modulator |
AU77938/98A AU751275B2 (en) | 1997-05-27 | 1998-05-26 | Apparatus and method for the reduction of periodic noise in a sigma-delta modulator |
BR9809163-8A BR9809163A (pt) | 1997-05-27 | 1998-05-26 | Processo e aparelho para modulação sigma-delta, e, processo e aparelho para conversão digital/ analógica |
CN98805577A CN1260913A (zh) | 1997-05-27 | 1998-05-26 | 降低在σ-δ调制器中周期性噪声的设备与方法 |
CO98029413A CO4790202A1 (es) | 1997-05-27 | 1998-05-26 | Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta |
KR19997011091A KR20010013111A (ko) | 1997-05-27 | 1998-05-26 | 시그마-델타 변조기에서 주기적 잡음을 감소하는 장치 및방법 |
PCT/SE1998/000990 WO1998054840A2 (en) | 1997-05-27 | 1998-05-26 | Apparatus and method for the reduction of periodic noise in a sigma-delta modulator |
EEP199900536A EE03500B1 (et) | 1997-05-27 | 1998-05-26 | Seade ja meetod perioodilise müra vähendamiseks sigma-delta modulaatoris |
ARP980102466A AR012873A1 (es) | 1997-05-27 | 1998-05-27 | Un metodo para la reduccion del ruido periodico en un modulador sigma-delta y un aparato para llevar a la practica dicho metodo. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9701986A SE509408C2 (sv) | 1997-05-27 | 1997-05-27 | Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9701986D0 SE9701986D0 (sv) | 1997-05-27 |
SE9701986L SE9701986L (sv) | 1998-11-28 |
SE509408C2 true SE509408C2 (sv) | 1999-01-25 |
Family
ID=20407109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9701986A SE509408C2 (sv) | 1997-05-27 | 1997-05-27 | Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator |
Country Status (12)
Country | Link |
---|---|
US (1) | US6175321B1 (pt) |
EP (1) | EP1080534B1 (pt) |
JP (1) | JP4027434B2 (pt) |
KR (1) | KR20010013111A (pt) |
CN (1) | CN1260913A (pt) |
AR (1) | AR012873A1 (pt) |
AU (1) | AU751275B2 (pt) |
BR (1) | BR9809163A (pt) |
CO (1) | CO4790202A1 (pt) |
EE (1) | EE03500B1 (pt) |
SE (1) | SE509408C2 (pt) |
WO (1) | WO1998054840A2 (pt) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU1619601A (en) | 1999-11-19 | 2001-05-30 | New Focus, Inc. | Method and apparatus for an electro optic converter |
US6456223B1 (en) * | 1999-12-28 | 2002-09-24 | Texas Instruments Incorporated | Pipelined analog to digital converter using digital mismatch noise cancellation |
US6897772B1 (en) * | 2000-11-14 | 2005-05-24 | Honeywell International, Inc. | Multi-function control system |
JP4649777B2 (ja) * | 2001-02-09 | 2011-03-16 | ソニー株式会社 | デルタシグマ変調装置及び方法、並びにデジタル信号処理装置及び方法 |
US6823033B2 (en) | 2002-03-12 | 2004-11-23 | Qualcomm Inc. | ΣΔdelta modulator controlled phase locked loop with a noise shaped dither |
TWI235000B (en) * | 2002-09-24 | 2005-06-21 | Mstar Semiconductor Inc | Apparatus and method for masking interference noise contained in signal source |
US20040141559A1 (en) * | 2002-10-24 | 2004-07-22 | Tewfik Ahmed H. | Generating UWB-OFDM signal using sigma-delta modulator |
TWI279988B (en) * | 2002-12-24 | 2007-04-21 | Fujitsu Ltd | Spread spectrum clock generation circuit, jitter generation circuit and semiconductor device |
US7561635B2 (en) * | 2003-08-05 | 2009-07-14 | Stmicroelectronics Nv | Variable coder apparatus for resonant power conversion and method |
WO2006002844A1 (en) * | 2004-07-01 | 2006-01-12 | Ericsson Technology Licensing Ab | Apparatus comprising a sigma-delta modulator and method of generating a quantized signal in a sigma-delta modulator |
EP1612946B1 (en) * | 2004-07-01 | 2007-03-21 | Ericsson Technology Licensing AB | Apparatus comprising a sigma-delta modulator and method of generating a quantized signal in a sigma-delta modulator |
US6980145B1 (en) * | 2004-07-30 | 2005-12-27 | Broadcom Corporation | System and method for noise cancellation in a signal processing circuit |
US7362250B2 (en) * | 2005-01-31 | 2008-04-22 | Texas Instruments Incorporated | Dynamic dither for sigma-delta converters |
GB0514677D0 (en) | 2005-07-18 | 2005-08-24 | Queen Mary & Westfield College | Sigma delta modulators |
WO2007038280A1 (en) * | 2005-09-23 | 2007-04-05 | University Of Rochester | Blue-noise-modulated sigma-delta analog-to-digital converter |
US7215267B1 (en) * | 2005-12-19 | 2007-05-08 | Cirrus Logic, Inc. | Analog-to-digital converter with dither control |
US7821436B2 (en) * | 2006-06-08 | 2010-10-26 | Cosmic Circuits Private Limited | System and method for reducing power dissipation in an analog to digital converter |
JP2009088924A (ja) | 2007-09-28 | 2009-04-23 | Fujitsu Ltd | 信号変調方法、信号変調装置、電子装置および信号変調プログラム |
JP4856659B2 (ja) * | 2008-01-30 | 2012-01-18 | ルネサスエレクトロニクス株式会社 | 半導体集積回路装置 |
KR101182407B1 (ko) | 2008-12-22 | 2012-09-13 | 한국전자통신연구원 | 펄스 생성기 및 연속시간 시그마-델타 변조기 |
US8866655B2 (en) * | 2012-08-10 | 2014-10-21 | Infineon Technologies Ag | Modulator with variable quantizer |
EP3694109B1 (en) * | 2014-02-25 | 2023-05-03 | ams AG | Microphone arrangement |
US11121718B1 (en) * | 2020-08-12 | 2021-09-14 | Analog Devices International Unlimited Company | Multi-stage sigma-delta analog-to-digital converter with dither |
CN114095030A (zh) * | 2021-10-14 | 2022-02-25 | 中国兵器工业集团第二一四研究所苏州研发中心 | 一种全差分带弦音消除的sigma-delta ADC |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3999129A (en) * | 1975-04-16 | 1976-12-21 | Rolm Corporation | Method and apparatus for error reduction in digital information transmission systems |
JPS62140518A (ja) * | 1985-12-13 | 1987-06-24 | Advantest Corp | Ad変換装置 |
EP0308982B1 (en) | 1987-09-25 | 1995-09-06 | Nec Corporation | Analog-to-digital converter having an excellent signal-to-noise ratio for small signals |
JP2647136B2 (ja) * | 1988-05-13 | 1997-08-27 | 株式会社東芝 | アナログ−デジタル変換回路 |
JP3012887B2 (ja) * | 1989-03-13 | 2000-02-28 | 日本テキサス・インスツルメンツ株式会社 | 信号変換装置 |
US5055843A (en) * | 1990-01-31 | 1991-10-08 | Analog Devices, Inc. | Sigma delta modulator with distributed prefiltering and feedback |
US5144308A (en) * | 1991-05-21 | 1992-09-01 | At&T Bell Laboratories | Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither |
-
1997
- 1997-05-27 SE SE9701986A patent/SE509408C2/sv not_active IP Right Cessation
-
1998
- 1998-05-26 EP EP98926008A patent/EP1080534B1/en not_active Expired - Lifetime
- 1998-05-26 CO CO98029413A patent/CO4790202A1/es unknown
- 1998-05-26 US US09/084,650 patent/US6175321B1/en not_active Expired - Lifetime
- 1998-05-26 KR KR19997011091A patent/KR20010013111A/ko not_active Ceased
- 1998-05-26 JP JP50058799A patent/JP4027434B2/ja not_active Expired - Lifetime
- 1998-05-26 AU AU77938/98A patent/AU751275B2/en not_active Ceased
- 1998-05-26 BR BR9809163-8A patent/BR9809163A/pt not_active IP Right Cessation
- 1998-05-26 CN CN98805577A patent/CN1260913A/zh active Pending
- 1998-05-26 WO PCT/SE1998/000990 patent/WO1998054840A2/en active IP Right Grant
- 1998-05-26 EE EEP199900536A patent/EE03500B1/xx not_active IP Right Cessation
- 1998-05-27 AR ARP980102466A patent/AR012873A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
EE03500B1 (et) | 2001-08-15 |
EE9900536A (et) | 2000-06-15 |
US6175321B1 (en) | 2001-01-16 |
SE9701986D0 (sv) | 1997-05-27 |
AU751275B2 (en) | 2002-08-08 |
JP2002502565A (ja) | 2002-01-22 |
SE9701986L (sv) | 1998-11-28 |
AU7793898A (en) | 1998-12-30 |
CO4790202A1 (es) | 1999-05-31 |
EP1080534A2 (en) | 2001-03-07 |
WO1998054840A2 (en) | 1998-12-03 |
BR9809163A (pt) | 2000-08-01 |
WO1998054840A3 (en) | 1999-03-11 |
KR20010013111A (ko) | 2001-02-26 |
AR012873A1 (es) | 2000-11-22 |
EP1080534B1 (en) | 2006-02-22 |
JP4027434B2 (ja) | 2007-12-26 |
CN1260913A (zh) | 2000-07-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |