Maxim MAX98306立体声3.7W D类放大器解决方案

Maxim公司的MAX98306是立体声3.7W D类放大器,具有AB类的音频性能和D类的效率.器件提供5种可供选择的增益设定(6dB, 9dB, 12dB, 15dB和18dB),工作电压5V,3.7V时的静态电流为2.0mA, 217Hz时的PSSR为83dB,具有热和过流保护,主要用在智能手机,平板电脑,MP3,手持音乐播放器和VoIP电话.本文介绍了MAX98306主要特性,方框图,典型应用电路图以及MAX98306评估板主要特性,电路图和材料清单,PCB元件布局图.

The MAX98306 stereo 3.7W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (6dB, 9dB, 12dB, 15dB, and 18dB) set by a single gain-select input (GAIN).

Active emissions limiting, edge-rate, and overshoot control circuitry combined with a filterless spread-spectrum modulation scheme (SSM) provide excellent EMI performance while eliminating the need for output filtering found in traditional Class D devices. These features reduce application component count.

The IC’s 2.0mA quiescent current with a 3.7V supply extends battery life in portable applications.

The IC is available in a 14-pin TDFN (3mm x 3mm x 0.75mm) package specified over the extended -40NC to +85NC temperature range.

MAX98306主要特性:

Output Power 3.7W at 3I, 10% THD, 1.7W at 8I, 10% THD, with 5V Supply
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