KR100377037B1 - 잡음제거회로 - Google Patents
잡음제거회로 Download PDFInfo
- Publication number
- KR100377037B1 KR100377037B1 KR1019960003231A KR19960003231A KR100377037B1 KR 100377037 B1 KR100377037 B1 KR 100377037B1 KR 1019960003231 A KR1019960003231 A KR 1019960003231A KR 19960003231 A KR19960003231 A KR 19960003231A KR 100377037 B1 KR100377037 B1 KR 100377037B1
- Authority
- KR
- South Korea
- Prior art keywords
- filter
- error
- error signal
- output
- circuit
- Prior art date
Links
- 230000008030 elimination Effects 0.000 title 1
- 238000003379 elimination reaction Methods 0.000 title 1
- 238000013139 quantization Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 description 12
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/22—Analogue/digital converters pattern-reading type
-
- 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
- H03M7/3022—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type
-
- 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
- H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
- H03M3/502—Details of the final digital/analogue conversion following the digital delta-sigma modulation
- H03M3/504—Details of the final digital/analogue conversion following the digital delta-sigma modulation the final digital/analogue converter being constituted by a finite impulse response [FIR] filter, i.e. FIRDAC
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
- Noise Elimination (AREA)
Abstract
Description
Claims (8)
- 시그마-델타 변조기와 데이터 출력을 갖는 D/A 변환기를 함께 사용하기 위한 잡음 제거 회로에 있어서,시그마-델타 변조기의 에러 신호를 측정하는 에러 측정 수단으로서, 상기 에러 신호는 변조기의 양자화 에러를 나타내는, 상기 에러 측정 수단과,에러 신호를 수신하도록 결합되고 필터 에러 신호를 제공하는 필터링 수단과,D/A 변환기의 데이터 출력에 결합되고 보상된 출력을 제공하는 필터 보상 수단과,필터 에러 신호를 수신하도록 결합되고 상기 필터 에리 신호에 따라 스케일된 필터 에러 신호를 제공하는 스케일링 수단과,스케일된 필터 에러 신호를 수신하도록 결합되고 에러 데이터의 단일 비트스트림을 제공하는 변조 수단, 및에러 데이터의 단일 비트 스트림과 D/A 변환기에서 보상된 출력을 가산하고 정정된 출력을 제공하는 가산 수단을 포함하며,상기 에러 신호는 여과되고 스케일 및 변조되고 상기 데이터 출력은 보상되어 실질적으로 감소된 양자화 에러를 갖는 정정된 출력을 얻는 것을 특징으로 하는, 잡음 제거 회로.
- 제 1 항에 있어서, 상기 에러 측정 수단은 필터, 제 1 지연 장치 및 감산 장치를 구비하는, 잡음 제거 회로.
- 제 1 항 또는 제 2 항에 있어서, 상기 보상 수단은 상기 필터 수단과 관련된 지연을 보상하는, 잡음 제거 회로.
- 제 1 항 또는 제 2 항에 있어서, 상기 보상 수단은 제 2 지연 장치인, 잡음 제거 회로.
- 제 1 항 또는 제 2 항에 있어서, 상기 필터 수단은 콤 필터인, 잡음 제거 회로.
- 제 1 항 또는 제 2 항에 있어서, 상기 가산 수단은 시프트 래지스터들과 스위치 캐패시터들을 포함하는, 잡음 제거 회로.
- 캐스케이드 구성에서, 제 1 항 또는 제 2 항의 다수의 잡음 제거 회로들을 구비하는, 잡음 제거 장치.
- 제 4 항에 있어서, 각 회로의 보상 수단은 또한 캐스케이드내의 회로의 상대적 위치를 보상하는, 잡음 제거 회로.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9502586A GB2298096B (en) | 1995-02-10 | 1995-02-10 | Noise cancelling circuit and arrangement |
GB9502586 | 1995-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960032908A KR960032908A (ko) | 1996-09-17 |
KR100377037B1 true KR100377037B1 (ko) | 2003-06-09 |
Family
ID=10769367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960003231A KR100377037B1 (ko) | 1995-02-10 | 1996-02-10 | 잡음제거회로 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5724038A (ko) |
EP (1) | EP0726656B1 (ko) |
JP (1) | JPH08274665A (ko) |
KR (1) | KR100377037B1 (ko) |
DE (1) | DE69609999T2 (ko) |
GB (1) | GB2298096B (ko) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100219155B1 (ko) * | 1996-09-11 | 1999-09-01 | 윤종용 | 디지탈/아날로그 변환장치 |
WO1998048515A1 (en) * | 1997-04-18 | 1998-10-29 | Steensgaard Madsen Jesper | Oversampled digital-to-analog converter based on nonlinear separation and linear recombination |
DE19851637A1 (de) * | 1998-11-10 | 2000-05-11 | Bosch Gmbh Robert | Sigma-Delta-Modulator und Verfahren zur Unterdrückung eines Quantisierungsfehlers in einem Sigma-Delta-Modulator |
DE19854124C1 (de) * | 1998-11-24 | 2000-08-24 | Bosch Gmbh Robert | Sigma-Delta D/A-Wandler |
WO2000039932A2 (en) * | 1998-12-14 | 2000-07-06 | Steensgaard Madsen Jesper | Serial d/a converter |
US6473011B1 (en) | 1999-08-19 | 2002-10-29 | Jesper Steensgaard-Madsen | Serial D/A converter compensating for capacitor mismatch errors |
DE69910591T2 (de) * | 1999-11-19 | 2004-06-24 | Ami Semiconductor Belgium Bvba | Wandlerschnittstellenanordnung mit einem Sigma-Delta-Modulator mit Nullpunktabgleich und Verstärkungseinstellung |
US6535154B1 (en) * | 2001-11-05 | 2003-03-18 | Texas Instruments Incorporated | Enhanced noise-shaped quasi-dynamic-element-matching technique |
DE10162566A1 (de) * | 2001-12-19 | 2003-08-21 | Siemens Ag | Sigma-Delta-Wandler mit Rauschunterdrückung |
US7230996B2 (en) | 2002-06-13 | 2007-06-12 | Matsushita Electric Industrial Co., Ltd. | Transmitting circuit device and wireless communications device |
US6741197B1 (en) * | 2003-01-13 | 2004-05-25 | Cirrus Logic, Inc. | Digital-to-analog converter (DAC) output stage |
US7345606B2 (en) * | 2004-01-28 | 2008-03-18 | Nxp B.V. | DA-converter system and a method for converting a multi-bit digital signal to an analog signal |
EP1583245A3 (en) * | 2004-03-10 | 2006-09-13 | Matsushita Electric Industrial Co., Ltd. | Data converter device and data conversion method, and transmitter circuit, communications device and electronic device using the same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2543095B2 (ja) * | 1987-09-14 | 1996-10-16 | 松下電器産業株式会社 | オ―バ―サンプリング型d/a変換器 |
US5235334A (en) * | 1992-03-30 | 1993-08-10 | Motorola, Inc. | Digital-to-analog converter with a linear interpolator |
US5369403A (en) * | 1992-09-01 | 1994-11-29 | The State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University | Dual quantization oversampling digital-to-analog converter |
US5323157A (en) * | 1993-01-15 | 1994-06-21 | Motorola, Inc. | Sigma-delta digital-to-analog converter with reduced noise |
US5414424A (en) * | 1993-08-26 | 1995-05-09 | Advanced Micro Devices, Inc. | Fourth-order cascaded sigma-delta modulator |
US5585802A (en) * | 1994-11-02 | 1996-12-17 | Advanced Micro Devices, Inc. | Multi-stage digital to analog conversion circuit and method |
-
1995
- 1995-02-10 GB GB9502586A patent/GB2298096B/en not_active Expired - Fee Related
-
1996
- 1996-02-05 EP EP96101616A patent/EP0726656B1/en not_active Expired - Lifetime
- 1996-02-05 DE DE69609999T patent/DE69609999T2/de not_active Expired - Fee Related
- 1996-02-07 JP JP8046563A patent/JPH08274665A/ja active Pending
- 1996-02-10 KR KR1019960003231A patent/KR100377037B1/ko not_active IP Right Cessation
- 1996-02-12 US US08/599,742 patent/US5724038A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2298096B (en) | 1998-09-02 |
US5724038A (en) | 1998-03-03 |
GB9502586D0 (en) | 1995-03-29 |
DE69609999T2 (de) | 2001-03-01 |
JPH08274665A (ja) | 1996-10-18 |
DE69609999D1 (de) | 2000-10-05 |
EP0726656B1 (en) | 2000-08-30 |
GB2298096A (en) | 1996-08-21 |
KR960032908A (ko) | 1996-09-17 |
EP0726656A1 (en) | 1996-08-14 |
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Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19960210 |
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