NXP公司的SA58670是每路輸出2.1W的立體聲D類音頻放大器,能對每路進行單獨的關(guān)斷控制.增益可選擇為6dB,12dB,18dB或24dB.SA58670工作電壓2.5V到5.5V,5V時能向4歐姆負載提供2.1W/路,向8歐姆負載提供1.4W/路,217Hz時的SVRR高達77dB,可用在無線和蜂窩手機與PDA,手提DVD播放器,USB揚聲器,筆記本電腦和手提收音機和游戲機.本文介紹了SA58670主要特性,方框圖和應(yīng)用電路.SA58670:2.1W/channelstereoclass-DaudioamplifierTheSA58670isastere
NXP公司的SA58670是每路輸出2.1W的立體聲D類音頻放大器,能對每路進行單獨的關(guān)斷控制.增益可選擇為6
dB, 12dB, 18dB或
24dB. SA58670工作電壓2.5V到5.5V,5V時能向4歐姆負載提供2.1W/路, 向8歐姆負載提供1.4W/路,217Hz時的SVRR高達77dB,可用在無線和蜂窩
手機與PDA,手提DVD播放器,
USB揚聲器,
筆記本電腦和手提收音機和游戲機.本文介紹了SA58670主要特性,方框圖和應(yīng)用電路.
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 be
setat 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.
