JP7043259B2 - オーバーサンプリングノイズシェーピング逐次比較型adc - Google Patents
オーバーサンプリングノイズシェーピング逐次比較型adc Download PDFInfo
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- JP7043259B2 JP7043259B2 JP2017529397A JP2017529397A JP7043259B2 JP 7043259 B2 JP7043259 B2 JP 7043259B2 JP 2017529397 A JP2017529397 A JP 2017529397A JP 2017529397 A JP2017529397 A JP 2017529397A JP 7043259 B2 JP7043259 B2 JP 7043259B2
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—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
- H03M1/20—Increasing resolution using an n bit system to obtain n + m bits
-
- 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
- H03M1/0634—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 averaging out the errors, e.g. using sliding scale
- H03M1/0656—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 averaging out the errors, e.g. using sliding scale in the time domain, e.g. using intended jitter as a dither signal
- H03M1/0658—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 averaging out the errors, e.g. using sliding scale in the time domain, e.g. using intended jitter as a dither signal by calculating a running average of a number of subsequent samples
-
- 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
- H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
- H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
-
- 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
- H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
- H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
- H03M1/466—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter using switched capacitors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/74—Simultaneous conversion
- H03M1/80—Simultaneous conversion using weighted impedances
- H03M1/802—Simultaneous conversion using weighted impedances using capacitors, e.g. neuron-mos transistors, charge coupled devices
- H03M1/804—Simultaneous conversion using weighted impedances using capacitors, e.g. neuron-mos transistors, charge coupled devices with charge redistribution
-
- 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
- H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
- H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
- H03M1/462—Details of the control circuitry, e.g. of the successive approximation register
-
- 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
- H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
- H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
- H03M1/466—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter using switched capacitors
- H03M1/468—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter using switched capacitors in which the input S/H circuit is merged with the feedback DAC array
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Analogue/Digital Conversion (AREA)
Description
Claims (12)
- 変換サイクルの始めに入力信号をサンプルホールドするように構成されたサンプルホールドキャパシタと、
その最上位ビットからその最下位ビットまで連続してデジタル出力を蓄積する逐次比較レジスタと、
前記逐次比較レジスタの前記出力に基づいて信号を出力するデジタルアナログ変換器と、
前記デジタルアナログ変換器の前記出力を前記サンプルホールドキャパシタの出力と比較し、その出力を前記逐次比較レジスタに提供するコンパレータと、
変換サイクルの終わりに、残差信号が増幅されたものを格納するように構成された残差信号格納キャパシタと、
前記逐次比較レジスタの前記出力をラッチするように構成された出力レジスタと、
を備える逐次比較型アナログデジタル変換器(ADC)であって、
前記逐次比較型アナログデジタル変換器(ADC)は、各々の変換サイクルの開始時に前記残差信号格納キャパシタからの格納された残差信号を前記サンプルホールドキャパシタに格納された入力信号に加えるように構成されており、前記逐次比較レジスタの前記出力は、1回のクロックサイクルを利用して、残差信号を格納するのと同時にラッチされる、逐次比較型アナログデジタル変換器(ADC)。 - その入力値を経時的に平均し、その入力より高い分解能において出力する時間平均装置をさらに備える、請求項1に記載の逐次比較型ADC。
- 前記時間平均装置がフィルタである、請求項2に記載の逐次比較型ADC。
- 前記ADCが、前記逐次比較レジスタが最下位ビットを設定した後、前記残差信号を次のクロックサイクルに備えて格納するように構成される、請求項1~3のいずれかに記載の逐次比較型ADC。
- センサと、
請求項1~4のいずれかに記載の逐次比較型ADCと、
前記逐次比較型ADCの前記出力を時間平均するフィルタと、
を備えるセンサ装置。 - 前記センサが加速度計またはジャイロスコープである、請求項5に記載のセンサ装置。
- 前記逐次比較型ADCの前記出力が、センサを駆動するための駆動装置にフィードバックされる、請求項5または6に記載のセンサ装置。
- 前記フィルタが二次フィルタである、請求項5、6または7に記載のセンサ装置。
- 前記フィルタが前記センサの駆動周波数で動作する、請求項5~8のいずれかに記載のセンサ装置。
- アナログ入力信号をデジタル値に変換する方法であって、
前記入力信号をサンプルホールドキャパシタにサンプリングすることと、
これ以前の変換サイクルからの任意の格納された残差信号に従って前記サンプリングされた入力信号を調節することと、
前記入力信号に対して逐次比較変換を行うことで、前記入力信号を表すデジタル値を提供し、前記デジタル値は、アナログに戻るように変換される際、できるだけ前記入力信号に近づくようなものであることと、
前記最終的なデジタル値のアナログ形式を比較し、それを前記入力信号と比較することで、2つ値の差を示す残差信号を提供することと、
次の変換サイクルのために前記残差信号が増幅されたものを残差信号格納キャパシタに格納することと、
を含む、アナログ入力信号をデジタル値に変換する方法。 - 前記逐次比較変換の前記出力デジタル値を経時的に平均してより高い分解能出力を生成することをさらに含む、請求項10に記載の方法。
- 前記残差信号が、前記逐次比較変換の最後のクロックサイクルの後、次のクロックサイクルにおいて格納される、請求項10または11に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1421481.1A GB2532972B (en) | 2014-12-03 | 2014-12-03 | Successive approximation ADC |
GB1421481.1 | 2014-12-03 | ||
PCT/GB2015/053708 WO2016087869A1 (en) | 2014-12-03 | 2015-12-03 | Oversampling noise-shaping successive approximation adc |
Publications (3)
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JP2018501711A JP2018501711A (ja) | 2018-01-18 |
JP2018501711A5 JP2018501711A5 (ja) | 2021-01-07 |
JP7043259B2 true JP7043259B2 (ja) | 2022-03-29 |
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JP2017529397A Active JP7043259B2 (ja) | 2014-12-03 | 2015-12-03 | オーバーサンプリングノイズシェーピング逐次比較型adc |
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US (1) | US10135454B2 (ja) |
EP (1) | EP3228011A1 (ja) |
JP (1) | JP7043259B2 (ja) |
KR (1) | KR102553580B1 (ja) |
GB (1) | GB2532972B (ja) |
WO (1) | WO2016087869A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN106323263B (zh) * | 2016-08-24 | 2019-04-16 | 南京理工大学 | 硅微陀螺机电结合带通sigma-delta闭环检测电路 |
US9698805B1 (en) | 2016-09-09 | 2017-07-04 | Analog Devices, Inc. | Electrical noise reduction in an analog-to-digital converter |
US9774345B1 (en) * | 2016-09-20 | 2017-09-26 | Kabushiki Kaisha Toshiba | Successive approximation register analog-to-digital converter |
TWI650956B (zh) * | 2017-12-12 | 2019-02-11 | 瑞昱半導體股份有限公司 | 連續漸近暫存器式量化器與連續時間三角積分調變器 |
CN108631778B (zh) * | 2018-05-10 | 2022-01-14 | 上海华虹宏力半导体制造有限公司 | 逐次逼近模数转换器及转换方法 |
JPWO2020195754A1 (ja) * | 2019-03-28 | 2020-10-01 | ||
KR102298843B1 (ko) * | 2019-11-29 | 2021-09-07 | 주식회사 이엘티 | 아크 검출 알고리즘에 따른 아크 검출 장치 |
US11387837B1 (en) * | 2020-12-30 | 2022-07-12 | Texas Instruments Incorporated | Successive approximation register analog to digital converter |
US11990917B2 (en) * | 2022-06-07 | 2024-05-21 | Invensense, Inc. | Incremental analog to digital converter incorporating noise shaping and residual error quantization |
Family Cites Families (15)
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NL8402766A (nl) * | 1984-09-11 | 1986-04-01 | Philips Nv | Analoog naar digitaal omzetschakeling. |
US4862168A (en) * | 1987-03-19 | 1989-08-29 | Beard Terry D | Audio digital/analog encoding and decoding |
JPH01155120A (ja) * | 1987-12-11 | 1989-06-19 | Hitachi Ltd | ガスタービン燃焼器の尾筒 |
JPH1155120A (ja) * | 1997-07-29 | 1999-02-26 | Nec Kyushu Ltd | Ad変換器及びこれを内蔵したマイクロコンピュータ |
JP2006519362A (ja) | 2003-02-28 | 2006-08-24 | ビ−エイイ− システムズ パブリック リミテッド カンパニ− | 加速度計 |
US8263938B2 (en) | 2004-03-01 | 2012-09-11 | Varian Medical Systems, Inc. | Dual energy radiation scanning of objects |
US7956787B2 (en) * | 2008-12-19 | 2011-06-07 | Silicon Laboratories Inc. | SAR analog-to-digital converter having differing bit modes of operation |
JP2010268139A (ja) * | 2009-05-13 | 2010-11-25 | Renesas Electronics Corp | A/d変換装置 |
JP5526672B2 (ja) * | 2009-09-16 | 2014-06-18 | 富士通株式会社 | Ad変換器 |
JP5447011B2 (ja) * | 2010-03-05 | 2014-03-19 | 富士通株式会社 | A/d変換装置およびa/d変換方法 |
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WO2013015672A1 (en) * | 2011-07-28 | 2013-01-31 | Mimos Berhad | Low power high resolution analogue to digital converter and method thereof |
US8593325B2 (en) * | 2011-11-02 | 2013-11-26 | Semtech Corporation | Successive approximation analog-to-digital conversion |
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JP6353267B2 (ja) * | 2014-04-28 | 2018-07-04 | 旭化成エレクトロニクス株式会社 | Ad変換器及びad変換方法 |
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2014
- 2014-12-03 GB GB1421481.1A patent/GB2532972B/en active Active
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2015
- 2015-12-03 KR KR1020177017828A patent/KR102553580B1/ko active IP Right Grant
- 2015-12-03 WO PCT/GB2015/053708 patent/WO2016087869A1/en active Application Filing
- 2015-12-03 JP JP2017529397A patent/JP7043259B2/ja active Active
- 2015-12-03 US US15/532,275 patent/US10135454B2/en active Active
- 2015-12-03 EP EP15807999.6A patent/EP3228011A1/en not_active Ceased
Non-Patent Citations (1)
Title |
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Analog Integrated Circuits and Signal Processing(2014)Vol.81 Issue.3 p805-814 |
Also Published As
Publication number | Publication date |
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GB2532972A (en) | 2016-06-08 |
EP3228011A1 (en) | 2017-10-11 |
KR20170091678A (ko) | 2017-08-09 |
GB2532972B (en) | 2021-03-10 |
US20170346497A1 (en) | 2017-11-30 |
JP2018501711A (ja) | 2018-01-18 |
GB201421481D0 (en) | 2015-01-14 |
KR102553580B1 (ko) | 2023-07-11 |
US10135454B2 (en) | 2018-11-20 |
WO2016087869A1 (en) | 2016-06-09 |
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