Implementation of a digital trim scheme for SAR ADCs
Successive approximation register (SAR) analog-to-digital Converters (ADC) are based on a capacitive digital-to-analog converter (CDAC) (McCreary and Gray, 1975). The capacitor mismatch in the capacitor array of the CDAC impacts the differential non-linearity (DNL) of the ADC directly. In order to a...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2013-07-01
|
| Series: | Advances in Radio Science |
| Online Access: | http://www.adv-radio-sci.net/11/227/2013/ars-11-227-2013.pdf |
| _version_ | 1811311933629923328 |
|---|---|
| author | J. Bialek A. Wickmann F. Ohnhaeuser G. Fischer R. Weigel T. Ussmueller |
| author_facet | J. Bialek A. Wickmann F. Ohnhaeuser G. Fischer R. Weigel T. Ussmueller |
| author_sort | J. Bialek |
| collection | DOAJ |
| description | Successive approximation register (SAR) analog-to-digital Converters (ADC)
are based on a capacitive digital-to-analog converter (CDAC)
(McCreary and Gray, 1975). The capacitor mismatch in the capacitor array of the
CDAC impacts the differential non-linearity (DNL) of the ADC directly. In
order to achieve a transfer function without missing codes, trimming of the
capacitor array becomes necessary for SAR ADCs with a resolution of more than
12 bit. This article introduces a novel digital approach for trimming. DNL
measurements of an 18 bit SAR ADC show that digital trimming allows the same
performance as analog trimming. Digital trimming however reduces the power
consumption of the ADC, the die size and the required time for the production
test. |
| first_indexed | 2024-04-13T10:27:39Z |
| format | Article |
| id | doaj.art-aa66d26ab3ae4243987adcb8510a99db |
| institution | Directory Open Access Journal |
| issn | 1684-9965 1684-9973 |
| language | deu |
| last_indexed | 2024-04-13T10:27:39Z |
| publishDate | 2013-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Advances in Radio Science |
| spelling | doaj.art-aa66d26ab3ae4243987adcb8510a99db2022-12-22T02:50:17ZdeuCopernicus PublicationsAdvances in Radio Science1684-99651684-99732013-07-011122723010.5194/ars-11-227-2013Implementation of a digital trim scheme for SAR ADCsJ. Bialek0A. Wickmann1F. Ohnhaeuser2G. Fischer3R. Weigel4T. Ussmueller5University of Erlangen-Nuremberg, Departement of Electrical Engineering, Erlangen, GermanyTexas Instruments Deutschland GmbH, GermanyTexas Instruments Deutschland GmbH, GermanyUniversity of Erlangen-Nuremberg, Departement of Electrical Engineering, Erlangen, GermanyUniversity of Erlangen-Nuremberg, Departement of Electrical Engineering, Erlangen, GermanyUniversity of Erlangen-Nuremberg, Departement of Electrical Engineering, Erlangen, GermanySuccessive approximation register (SAR) analog-to-digital Converters (ADC) are based on a capacitive digital-to-analog converter (CDAC) (McCreary and Gray, 1975). The capacitor mismatch in the capacitor array of the CDAC impacts the differential non-linearity (DNL) of the ADC directly. In order to achieve a transfer function without missing codes, trimming of the capacitor array becomes necessary for SAR ADCs with a resolution of more than 12 bit. This article introduces a novel digital approach for trimming. DNL measurements of an 18 bit SAR ADC show that digital trimming allows the same performance as analog trimming. Digital trimming however reduces the power consumption of the ADC, the die size and the required time for the production test.http://www.adv-radio-sci.net/11/227/2013/ars-11-227-2013.pdf |
| spellingShingle | J. Bialek A. Wickmann F. Ohnhaeuser G. Fischer R. Weigel T. Ussmueller Implementation of a digital trim scheme for SAR ADCs Advances in Radio Science |
| title | Implementation of a digital trim scheme for SAR ADCs |
| title_full | Implementation of a digital trim scheme for SAR ADCs |
| title_fullStr | Implementation of a digital trim scheme for SAR ADCs |
| title_full_unstemmed | Implementation of a digital trim scheme for SAR ADCs |
| title_short | Implementation of a digital trim scheme for SAR ADCs |
| title_sort | implementation of a digital trim scheme for sar adcs |
| url | http://www.adv-radio-sci.net/11/227/2013/ars-11-227-2013.pdf |
| work_keys_str_mv | AT jbialek implementationofadigitaltrimschemeforsaradcs AT awickmann implementationofadigitaltrimschemeforsaradcs AT fohnhaeuser implementationofadigitaltrimschemeforsaradcs AT gfischer implementationofadigitaltrimschemeforsaradcs AT rweigel implementationofadigitaltrimschemeforsaradcs AT tussmueller implementationofadigitaltrimschemeforsaradcs |