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A multi-bit delta sigma audio digita...

Wang, Ruopeng.

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A multi-bit delta sigma audio digital-to-analog converter.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A multi-bit delta sigma audio digital-to-analog converter./
作者:	Wang, Ruopeng.
面頁冊數:	104 p.
附註:	Source: Dissertation Abstracts International, Volume: 67-11, Section: B, page: 6639.
Contained By:	Dissertation Abstracts International67-11B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3241582
ISBN:	9780542964541

A multi-bit delta sigma audio digital-to-analog converter.
Wang, Ruopeng.

A multi-bit delta sigma audio digital-to-analog converter. - 104 p.

Source: Dissertation Abstracts International, Volume: 67-11, Section: B, page: 6639.

Thesis (Ph.D.)--Oregon State University, 2006.

Digital-to-analog converters (DACs) with wide dynamic range and high linearity are required for high-end audio applications. A multi-bit delta sigma audio DAC, using a novel gain-correction technique, is described in this thesis. For widely varying on-chip RC time constant, the DAC gain can be accurately controlled by the correction circuitry. To overcome the nonlinearity caused by the mismatches of the internal unit-element DAC, a new dynamic element matching (DEM) algorithm, named split-set data-weighted averaging (SDWA), is proposed. In-band tones can be effectively removed by the proposed algorithm while signal-to-noise ratio (SNR) is high. Hardware implementation of SDWA is cost-effective and low-latency which makes it practical in high speed applications. A headphone driver integrated together with the analog reconstruction filter in the delta sigma audio DAC allows the designed DAC to driver the headphone directly.

ISBN: 9780542964541Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

A multi-bit delta sigma audio digital-to-analog converter.
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502 $a Thesis (Ph.D.)--Oregon State University, 2006.
520 $a Digital-to-analog converters (DACs) with wide dynamic range and high linearity are required for high-end audio applications. A multi-bit delta sigma audio DAC, using a novel gain-correction technique, is described in this thesis. For widely varying on-chip RC time constant, the DAC gain can be accurately controlled by the correction circuitry. To overcome the nonlinearity caused by the mismatches of the internal unit-element DAC, a new dynamic element matching (DEM) algorithm, named split-set data-weighted averaging (SDWA), is proposed. In-band tones can be effectively removed by the proposed algorithm while signal-to-noise ratio (SNR) is high. Hardware implementation of SDWA is cost-effective and low-latency which makes it practical in high speed applications. A headphone driver integrated together with the analog reconstruction filter in the delta sigma audio DAC allows the designed DAC to driver the headphone directly.
520 $a An experimental headphone driver was designed and fabricated in a 0.35mum CMOS technology. The prototype delta sigma audio DAC integrated with the headphone driver was built using the same technology. Simulation and measured results show that they both meet the requirements for a typical high-end audio system.
590 $a School code: 0172.
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