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                Maxim MAX98304单声道3.2W D类音频放大解决方案

                2011年12月09日12:15:49 本网站 我要评论(2)字号:T | T | T

                Maxim 彩71的MAX98304是单声道3.2W D类音频放大器,提供AB类『音频性能和D类效率,提供五种引脚选择的增益(0dB,3dB,6dB,9dB和12dB),3.7V的静态电流0.95mA,超低噪音19μVRMS,PSRR为90dB,开关噪音抑制,热和过流保◥护,低电流关断模式。主要▓应用在笔记本和上网本电脑,手机,平板电脑,MP3播放器,手持音频播放恐怖力量器,VoIP电话。本文介绍了MAX98304主要特性,功能方框图,典型应用电∮路图,MAX98304评估板主要鼎盖猛然掀开特性,电路图,材料清单和PCB元件布局图。

                The MAX98304 mono 3.2W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (0dB, 3dB, 6dB, 9dB, and 12dB) set by a single gain-select input (GAIN).

                Active emissions-limiting, edge-rate, and overshoot control circuitry greatly reduces EMI. A filterless spreadspectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These features reduce application component count.
                The IC’s 0.95mA at 3.7V (1.2mA at 5V) quiescent current extends battery life in portable applications.

                The IC is available in a 9-bump (1.0mm x 1.0mm) WLP with 0.3mm pitch that is specified over the extended -40NC to +85NC temperature range.


                Low Quiescent Current: 0.95mA at 3.7V

                Spread Spectrum and Active Emissions Limiting

                Five Pin-Selectable Gains

                19μVRMS Ultra-Low Noise

                90dB PSRR

                Click-and-Pop Suppression

                Thermal and Overcurrent Protection

                Low-Current Shutdown Mode

                1.0mm x 1.0mm, 9-Bump WLP (0.3mm Pitch) Space-Saving Package


                Notebook and Netbook Computers

                Cellular Phones


                MP3 Players

                Portable Audio Players

                VoIP Phones

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