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Description
| - Tento článek pojednává o nové postkalibrační metodě, která koriguje některé chyby, které vznikají převodem v řetězovém převodníku AD (ADC) při použití obvodové techniky spínaných kapacitorů (SC). Spolu s některými modifikovanými obvodovými principy pak komplexně řeší problémy, které s technikou SC souvisejí. Samotný návrh řetězového ADC byl ovlivněn několika požadavky, a to zejména nízkou spotřebou (pro použití v přenosných zařízeních), dobrým rozlišením při vysoké rychlosti převodu, vysokou linearitou převodu a odolností vůči parazitním vlivům jako jsou různé druhy šumů, parazitní kapacity apod. (cs)
- The paper deals with new background calibration technique, which is utilized in new 12-bit low power pipelined ADC. The switched-capacitor approach is used in designed ADC as well. Since portable applications demand for low power consumption, it is one of the most important issues considered in the design. A modified operational-amplifier (op-amp) sharing technique was used to decrease the power usage as well as capacitor scaling approach. To avoid the clock feedthrough from digital part through the switches, the fully differential circuitry was utilized. The special op-amps and comparators were designed for this purpose and to obtain large bandwidth. The power consumption of the op-amps was taken into account too. The finite op-amp dc gain problem is solved in digital-domain using background calibration. The capacitor mismatch and op-amp offset are compensated in the same manner.
- The paper deals with new background calibration technique, which is utilized in new 12-bit low power pipelined ADC. The switched-capacitor approach is used in designed ADC as well. Since portable applications demand for low power consumption, it is one of the most important issues considered in the design. A modified operational-amplifier (op-amp) sharing technique was used to decrease the power usage as well as capacitor scaling approach. To avoid the clock feedthrough from digital part through the switches, the fully differential circuitry was utilized. The special op-amps and comparators were designed for this purpose and to obtain large bandwidth. The power consumption of the op-amps was taken into account too. The finite op-amp dc gain problem is solved in digital-domain using background calibration. The capacitor mismatch and op-amp offset are compensated in the same manner. (en)
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Title
| - The New Background Calibration Technique for Pipelined ADC Using Switched-capacitor Approach
- Nová postkalibrační technika pro řetězový převodník AD pracujícího v technice spínaných kapacitorů (cs)
- The New Background Calibration Technique for Pipelined ADC Using Switched-capacitor Approach (en)
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skos:prefLabel
| - The New Background Calibration Technique for Pipelined ADC Using Switched-capacitor Approach
- Nová postkalibrační technika pro řetězový převodník AD pracujícího v technice spínaných kapacitorů (cs)
- The New Background Calibration Technique for Pipelined ADC Using Switched-capacitor Approach (en)
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skos:notation
| - RIV/00216305:26220/05:PU51453!RIV07-GA0-26220___
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GA102/03/0619), P(GA102/05/0869), P(GD102/03/H105), Z(MSM0021630503)
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00216305:26220/05:PU51453
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Pipelined ADC, switched-capacitors, background calibration, portable devices (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...v/mistoKonaniAkce
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http://linked.open...i/riv/mistoVydani
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http://linked.open...i/riv/nazevZdroje
| - Proceedings of Electronic Devices and Systems IMAPS CS International Conference 2005
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...iv/tvurceVysledku
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http://linked.open.../riv/zahajeniAkce
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http://linked.open...n/vavai/riv/zamer
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number of pages
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is http://linked.open...avai/riv/vysledek
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