JP6451757B2 - Ad変換装置 - Google Patents
Ad変換装置 Download PDFInfo
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- JP6451757B2 JP6451757B2 JP2017032908A JP2017032908A JP6451757B2 JP 6451757 B2 JP6451757 B2 JP 6451757B2 JP 2017032908 A JP2017032908 A JP 2017032908A JP 2017032908 A JP2017032908 A JP 2017032908A JP 6451757 B2 JP6451757 B2 JP 6451757B2
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- JP
- Japan
- Prior art keywords
- converter
- noise
- signal
- comparison
- converters
- 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.)
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- 238000000034 method Methods 0.000 claims description 25
- 230000003111 delayed effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 description 25
- 102100040862 Dual specificity protein kinase CLK1 Human genes 0.000 description 15
- 101000749294 Homo sapiens Dual specificity protein kinase CLK1 Proteins 0.000 description 15
- 230000001360 synchronised effect Effects 0.000 description 9
- 102100040844 Dual specificity protein kinase CLK2 Human genes 0.000 description 5
- 101000749291 Homo sapiens Dual specificity protein kinase CLK2 Proteins 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 102100040856 Dual specificity protein kinase CLK3 Human genes 0.000 description 4
- 101000749304 Homo sapiens Dual specificity protein kinase CLK3 Proteins 0.000 description 4
- 101100368144 Mus musculus Synb gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
Images
Classifications
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- 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
- H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
- H03M1/16—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit with scale factor modification, i.e. by changing the amplification between the steps
- H03M1/162—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit with scale factor modification, i.e. by changing the amplification between the steps the steps being performed sequentially in a single stage, i.e. recirculation type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
- H03M1/0624—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by synchronisation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
- H03M1/0675—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy
- H03M1/0697—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy in time, e.g. using additional comparison cycles
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
-
- 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
- H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
- H03M1/1245—Details of sampling arrangements or methods
- H03M1/1255—Synchronisation of the sampling frequency or phase to the input frequency or phase
-
- 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
- H03M1/34—Analogue value compared with reference values
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Description
さらに、本発明のAD変換装置において、前記AD変換器は、基準クロックの1周期ごとに前記比較電圧生成処理と前記比較処理とを繰り返し、動作開始時に、前記ノイズ通知信号によってノイズ発生が通知されている場合、動作の開始を前記基準クロックの1周期分遅延させても良い。
この構成により、AD変換器10a、10bを独立して動作させても、ノイズ通知信号SYNに基づいてAD変換器10a、10bの動作を同期させることができるため、比較電圧生成処理と比較処理とが同時に行われることを防止し、ノイズによる変換精度の低下を防止することができる。
この構成により、基準クロックCLK0の1周期分遅延させるだけで、簡単にAD変換器10a、10bの動作を同期させることができる。
10a、10b AD変換器
11 S/H回路
12 制御部
13 コンパレータ
14 逐次比較レジスタ
15 DA変換器
Claims (2)
- 比較電圧を生成する比較電圧生成処理と、アナログ信号と前記比較電圧とを比較する比較処理とを繰り返して、前記アナログ信号をデジタル信号にAD変換する逐次比較型のAD変換器を複数個備えたAD変換装置であって、
前記AD変換器は、ノイズ発生を通知するノイズ通知信号を生成して、他の前記AD変換器に入力するノイズ通知部を具備し、
前記AD変換器は、動作開始時に、他の前記AD変換器から入力される前記ノイズ通知信号に基づいて、前記比較電圧生成処理及び前記比較処理を動作中の他の前記AD変換器と同期させることを特徴とするAD変換装置。 - 前記AD変換器は、基準クロックの1周期ごとに前記比較電圧生成処理と前記比較処理とを繰り返し、動作開始時に、前記ノイズ通知信号によってノイズ発生が通知されている場合、動作の開始を前記基準クロックの1周期分遅延させることを特徴とする請求項1記載のAD変換装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017032908A JP6451757B2 (ja) | 2017-02-24 | 2017-02-24 | Ad変換装置 |
US15/903,090 US10263631B2 (en) | 2017-02-24 | 2018-02-23 | Analog digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017032908A JP6451757B2 (ja) | 2017-02-24 | 2017-02-24 | Ad変換装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018137705A JP2018137705A (ja) | 2018-08-30 |
JP6451757B2 true JP6451757B2 (ja) | 2019-01-16 |
Family
ID=63246544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017032908A Active JP6451757B2 (ja) | 2017-02-24 | 2017-02-24 | Ad変換装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US10263631B2 (ja) |
JP (1) | JP6451757B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10509104B1 (en) * | 2018-08-13 | 2019-12-17 | Analog Devices Global Unlimited Company | Apparatus and methods for synchronization of radar chips |
JP7396127B2 (ja) * | 2020-03-04 | 2023-12-12 | 株式会社デンソー | 変換処理装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10285037A (ja) * | 1997-04-10 | 1998-10-23 | Mitsubishi Electric Corp | アナログ−デジタル変換回路 |
KR100541053B1 (ko) * | 2003-02-11 | 2006-01-10 | 삼성전자주식회사 | 프로세스들간의 출력 동기가 보정된 다중 프로세스 a/d컨버터 |
JP4263050B2 (ja) * | 2003-07-28 | 2009-05-13 | 株式会社ルネサステクノロジ | 逐次比較型a/dコンバータ |
US7834792B2 (en) * | 2005-06-17 | 2010-11-16 | Analog Devices, Inc. | Synchronous analog to digital conversion system and method |
JP5481809B2 (ja) * | 2008-08-12 | 2014-04-23 | 富士通株式会社 | コンパレータ回路及びそれを有するアナログデジタルコンバータ |
JP2013191976A (ja) * | 2012-03-13 | 2013-09-26 | Renesas Electronics Corp | 集積回路 |
JP6093265B2 (ja) * | 2013-08-07 | 2017-03-08 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
WO2015120315A1 (en) * | 2014-02-06 | 2015-08-13 | Massachusetts Institute Of Technology | Reducing timing-skew errors in time-interleaved adcs |
JP6213538B2 (ja) * | 2015-09-24 | 2017-10-18 | 横河電機株式会社 | 信号処理回路 |
US9484945B1 (en) * | 2016-05-05 | 2016-11-01 | Hong Kong Applied Science and Technology Research Institute Company, Limited | Asynchronous successive-approximation-register analog-to-digital converter (SAR ADC) in synchronized system |
US9806734B1 (en) * | 2016-11-04 | 2017-10-31 | Analog Devices Global | SAR analog-to-digital converter selective synchronization |
-
2017
- 2017-02-24 JP JP2017032908A patent/JP6451757B2/ja active Active
-
2018
- 2018-02-23 US US15/903,090 patent/US10263631B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20180248560A1 (en) | 2018-08-30 |
US10263631B2 (en) | 2019-04-16 |
JP2018137705A (ja) | 2018-08-30 |
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