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dc.contributor.author陈有炼
dc.contributor.author冯勇建
dc.contributor.author张少嘉
dc.date.accessioned2017-11-14T01:28:43Z
dc.date.available2017-11-14T01:28:43Z
dc.date.issued2008-05-15
dc.identifier.citation厦门大学学报(自然科学版),2008,(03):72-75
dc.identifier.issn0438-0479
dc.identifier.otherXDZK200803017
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/142103
dc.description.abstract就解决现有音频功率放大器中噪声高、失调大的问题,设计制作了一种0.6μm线宽的低压、低失真AB类音频功率放大器.器件采用BTL结构的差动输出,以简单的结构达到高质量音频重现.在设计中,采用前馈式AB类控制方式解决静态电流的控制,并增加浮动AB类控制减小失配,改善了传统AB类放大在噪声、失调等方面的性能.实验测试结果表明,供电电压为5 V时在关断模式下,将静态电流消耗减小到0.2μA以下;电源抑制比高于80 dB;总谐波失真在1%内.
dc.description.abstractIn order to improve traditional audio power amplifier's the noise and offset performance,we design a low-cost,stereo audio power amplifier.The audio power amplifiers are ideal for portable audio devices with internal speakers.Abridge-tied load(BTL) architecture minimizes external component count,while providing high-quality audio reproduction.We used feedforward Class AB control to solve the quiescent current control,improving the noise and offset performance.The test results in low-power shutdown mode,reducing quiescent current consumption to less than 0.2 μA;power supply rejection rate(PSRR) could reach 80 dB and the total harmonic distortion(THD) is less than 1% while operating from a single +5 V supply.
dc.description.sponsorship福建省自然科学基金(2002H020)资助
dc.language.isozh_CN
dc.subjectCMOS
dc.subject音频
dc.subject功率放大器
dc.subjectCMOS
dc.subjectaudio
dc.subjectpower amplifier
dc.title一种低功耗、高保真音频功率放大器的研发
dc.title.alternativeA Design of Low Voltage,Low Distortion Class AB Power Amplifier for Audio Application
dc.typeArticle


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