DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER
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| Language: | English |
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Wright State University / OhioLINK
2006
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=wright1155008919 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-wright11550089192021-08-03T06:16:30Z DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER Earick, Weston R. high-power high-efficiency low-distortion direct from digital digital amplifier amplifier digital-to-analog converter DAC audio total harmonic distortion THD high-fidelity For the process of converting low-power digital signals into their high-power analog counterparts, the functions of digital-to-analog conversion (at low power) and analog power amplification are separately implemented. This thesis proposes a new “STAC-DAC” circuit topology which directly realizes high-power analog output from low-power digital input signals. The ability to achieve a “direct from digital” high-power analog output in a single high-efficient, low-distortion design has significant potential in audio reproduction, and flexible signal generation applications. In this thesis, the “STAC-DAC” is described and its implementation via MATLAB and LTSpice is discussed. The results of simulations are used to prove the concept of the design. The 16-bit design features a high-power output of 100 watts or more at an efficiency of 93%. The design is optimized to feature low total harmonic distortion (THD) of 0.055% for a 1 kHz signal at 100 watts into an 8 Ω load and low phase distortion of less than 10° for a 20 kHz signal and only 1° at 1 kHz. The “STAC-DAC” design is applicable to any design which requires a high-power analog output that is controlled by a logic level digital input. The results validated that the “STAC-DAC” can produce low-level THD figures over the audio frequency range. If very low THD figures are not necessary, high-power analog operation can be achieved into the hundreds of kilohertz while maintaining high efficiency. These results show that the power “STAC-DAC” is capable of simultaneously achieving the highly efficient circuitry associated with digital-to-analog converters with the low harmonic and phase distortion requirements associated with high fidelity analog audio amplifiers. 2006-12-15 English text Wright State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=wright1155008919 http://rave.ohiolink.edu/etdc/view?acc_num=wright1155008919 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
high-power high-efficiency low-distortion direct from digital digital amplifier amplifier digital-to-analog converter DAC audio total harmonic distortion THD high-fidelity |
| spellingShingle |
high-power high-efficiency low-distortion direct from digital digital amplifier amplifier digital-to-analog converter DAC audio total harmonic distortion THD high-fidelity Earick, Weston R. DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER |
| author |
Earick, Weston R. |
| author_facet |
Earick, Weston R. |
| author_sort |
Earick, Weston R. |
| title |
DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER |
| title_short |
DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER |
| title_full |
DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER |
| title_fullStr |
DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER |
| title_full_unstemmed |
DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER |
| title_sort |
design of a high-power, high-efficiency, low-distortion direct from digital amplifier |
| publisher |
Wright State University / OhioLINK |
| publishDate |
2006 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=wright1155008919 |
| work_keys_str_mv |
AT earickwestonr designofahighpowerhighefficiencylowdistortiondirectfromdigitalamplifier |
| _version_ |
1719433884307816448 |