JP2002176325A - ディジタル増幅器 - Google Patents
ディジタル増幅器Info
- Publication number
- JP2002176325A JP2002176325A JP2001291741A JP2001291741A JP2002176325A JP 2002176325 A JP2002176325 A JP 2002176325A JP 2001291741 A JP2001291741 A JP 2001291741A JP 2001291741 A JP2001291741 A JP 2001291741A JP 2002176325 A JP2002176325 A JP 2002176325A
- Authority
- JP
- Japan
- Prior art keywords
- noise
- clock
- bridge
- delay
- digital amplifier
- 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.)
- Abandoned
Links
- 238000007493 shaping process Methods 0.000 abstract description 4
- 108091006146 Channels Proteins 0.000 description 31
- 238000010586 diagram Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 11
- 102100040862 Dual specificity protein kinase CLK1 Human genes 0.000 description 10
- 230000008901 benefit Effects 0.000 description 10
- 238000013459 approach Methods 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 9
- 230000001934 delay Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 6
- 101000637699 Homo sapiens Ryanodine receptor 1 Proteins 0.000 description 5
- 102100032122 Ryanodine receptor 1 Human genes 0.000 description 5
- 239000000872 buffer Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 101000740755 Homo sapiens Voltage-dependent calcium channel subunit alpha-2/delta-1 Proteins 0.000 description 4
- 102100037059 Voltage-dependent calcium channel subunit alpha-2/delta-1 Human genes 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013507 mapping Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013139 quantization Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 101000749294 Homo sapiens Dual specificity protein kinase CLK1 Proteins 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 101001028400 Homo sapiens Keratin, type I cytoskeletal 40 Proteins 0.000 description 1
- 101000885321 Homo sapiens Serine/threonine-protein kinase DCLK1 Proteins 0.000 description 1
- 102100037157 Keratin, type I cytoskeletal 40 Human genes 0.000 description 1
- 102100039758 Serine/threonine-protein kinase DCLK1 Human genes 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge 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
- H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M7/3026—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 multiple 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
- H03M7/3042—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 being of the error feedback type, i.e. having loop filter stages in the feedback path only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Amplifiers (AREA)
- Analogue/Digital Conversion (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23485100P | 2000-09-22 | 2000-09-22 | |
| US234851 | 2000-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002176325A true JP2002176325A (ja) | 2002-06-21 |
| JP2002176325A5 JP2002176325A5 (enExample) | 2008-11-06 |
Family
ID=22883077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001291741A Abandoned JP2002176325A (ja) | 2000-09-22 | 2001-09-25 | ディジタル増幅器 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20020060605A1 (enExample) |
| EP (1) | EP1193867B1 (enExample) |
| JP (1) | JP2002176325A (enExample) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006050588A (ja) * | 2004-07-02 | 2006-02-16 | Yamaha Corp | パルス幅変調増幅器 |
| JP2010045726A (ja) * | 2008-08-18 | 2010-02-25 | Sharp Corp | 信号増幅装置及び信号処理方法 |
| JP2013187861A (ja) * | 2012-03-09 | 2013-09-19 | Rohm Co Ltd | オーディオ出力回路およびそれを用いた電子機器、オーディオ用集積回路 |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10231183A1 (de) * | 2002-07-10 | 2004-01-29 | Infineon Technologies Ag | Verstärkerschaltung |
| DE60304213T2 (de) * | 2002-08-14 | 2007-03-29 | Dspfactory S.A. | Klasse-d verstärker |
| US20040223545A1 (en) * | 2003-03-04 | 2004-11-11 | Lee Ying Lau | Multi-level pulse width modulation in digital system |
| US20040189502A1 (en) * | 2003-03-04 | 2004-09-30 | Lee Ying Lau | Multi-level pulse width modulation in digital system |
| DE10337782B4 (de) * | 2003-07-14 | 2007-03-01 | Micronas Gmbh | Methode und Schaltung zur effektiven Konvertierung von PCM-in PWM-Daten |
| KR100657860B1 (ko) | 2004-05-17 | 2006-12-14 | 삼성전자주식회사 | 증폭기 및 증폭기의 과전류 검출 방법 |
| US7492217B2 (en) * | 2004-11-12 | 2009-02-17 | Texas Instruments Incorporated | On-the-fly introduction of inter-channel delay in a pulse-width-modulation amplifier |
| DE102006017520B4 (de) * | 2006-04-13 | 2012-06-21 | Siemens Ag | Verfahren zum Erzeugen eines Modulatoreingangssignals, digitaler Vormodulator und Modulatorsystem |
| US7692487B2 (en) * | 2007-01-31 | 2010-04-06 | Larry Kirn | Low RF interference switching amplifier and method |
| TWI449437B (zh) * | 2010-12-06 | 2014-08-11 | Richtek Technology Corp | 聲音輸出裝置的驅動電路 |
| US8325052B2 (en) * | 2010-12-07 | 2012-12-04 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Over-current protection apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0308982B1 (en) * | 1987-09-25 | 1995-09-06 | Nec Corporation | Analog-to-digital converter having an excellent signal-to-noise ratio for small signals |
| JPH02134010A (ja) * | 1988-11-15 | 1990-05-23 | Sony Corp | 信号処理装置 |
| DE69322762T2 (de) * | 1993-02-26 | 1999-06-02 | Schlumberger Industries S.A., Montrouge | AD-Wandler mit moduliertem Zittersignal |
| DE69431622T2 (de) * | 1993-12-23 | 2003-06-26 | Koninklijke Philips Electronics N.V., Eindhoven | Verfahren und gerät zum kodieren von mit mehreren bits kodiertem digitalem ton durch subtraktion eines adaptiven zittersignals, einfügen von versteckten kanalbits und filtrierung, sowie kodiergerät zur verwendung bei diesem verfahren |
| US5617058A (en) * | 1995-11-13 | 1997-04-01 | Apogee Technology, Inc. | Digital signal processing for linearization of small input signals to a tri-state power switch |
| CA2249460C (en) * | 1996-03-28 | 2006-11-28 | Lars Risbo | Conversion of a pcm signal into a upwm signal |
| US5999114A (en) * | 1997-07-03 | 1999-12-07 | Lucent Technologies Inc. | Dithered digital gain scalar/summer |
| US6014055A (en) * | 1998-02-06 | 2000-01-11 | Intersil Corporation | Class D amplifier with reduced clock requirement and related methods |
-
2001
- 2001-08-31 US US09/945,027 patent/US20020060605A1/en not_active Abandoned
- 2001-09-20 EP EP01000492.7A patent/EP1193867B1/en not_active Expired - Lifetime
- 2001-09-25 JP JP2001291741A patent/JP2002176325A/ja not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006050588A (ja) * | 2004-07-02 | 2006-02-16 | Yamaha Corp | パルス幅変調増幅器 |
| JP2010045726A (ja) * | 2008-08-18 | 2010-02-25 | Sharp Corp | 信号増幅装置及び信号処理方法 |
| JP2013187861A (ja) * | 2012-03-09 | 2013-09-19 | Rohm Co Ltd | オーディオ出力回路およびそれを用いた電子機器、オーディオ用集積回路 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020060605A1 (en) | 2002-05-23 |
| EP1193867A3 (en) | 2005-08-17 |
| EP1193867B1 (en) | 2018-11-14 |
| EP1193867A2 (en) | 2002-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080917 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080917 |
|
| A762 | Written abandonment of application |
Free format text: JAPANESE INTERMEDIATE CODE: A762 Effective date: 20090907 |