NXPSA58670立体声2.1WD类音频放大方案
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NXPSA58670立体声2.1WD类音频放大方案  2012/3/1
NXP公司的SA58670是每路输出2.1W的立体声D类音频放大器,能对每路进行单独的关断控制.增益可选择为6dB,12dB,18dB或24dB.SA58670工作电压2.5V到5.5V,5V时能向4欧姆负载提供2.1W/路,向8欧姆负载提供1.4W/路,217Hz时的SVRR高达77dB,可用在无线和蜂窝手机与PDA,手提DVD播放器,USB扬声器,笔记本电脑和手提收音机和游戏机.本文介绍了SA58670主要特性,方框图和应用电路.SA58670:2.1W/channelstereoclass-DaudioamplifierTheSA58670isastere
         NXP公司的SA58670是每路输出2.1W的立体声D类音频放大器,能对每路进行单独的关断控制.增益可选择为6dB, 12dB, 18dB或24dB. SA58670工作电压2.5V到5.5V,5V时能向4欧姆负载提供2.1W/路, 向8欧姆负载提供1.4W/路,217Hz时的SVRR高达77dB,可用在无线和蜂窝手机与PDA,手提DVD播放器,USB扬声器,笔记本电脑和手提收音机和游戏机.本文介绍了SA58670主要特性,方框图和应用电路.

SA58670: 2.1 W/channel stereo class-D audio amplifier

The SA58670 is a stereo, filter-free class-D audio amplifier which is available in an HVQFN20 package with the exposed Die Attach Paddle (DAP).

The SA58670 features independent shutdown controls for each channel. The gain may besetat 6 dB, 12 dB, 18 dB or 24 dB with gain select pins G0 and G1. Improved immunity to noise and RF rectification is increased by high PSRR and differential circuit topology. Fast start-up time and small package makes it an ideal choice for both cellular handsets and PDAs.
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