Atmel AT73C246带音频Codec的6路PMU方案
Atmel 公司的AT73C246是具有音频Codec的6路高性能电源管理单元(PMU),集成完整的新型低功耗音频编译码器(CODEC)和耳机放大器.工作电压2.9V-5.5V,PMU可产生4组稳压功率电源(2个高效DC/DC降压转换器和2个低噪音LDO)以及相关的延迟重置信号,一个200mA软件控制的LDO,2.5V/10mA备份电池充电器和RTC电源的LDO. 音频Codec的DAC具有100dB动态范围,ADC具有96dB动态范围,A加权的SNR为97dB,THD为-60dB,3.3V/16欧姆的最大输出功率为55mW.主要用在多媒体音频+电源解决方案.本文介绍了AT73C246主要特性,功能方框图,以及测量桥和10位ADC方框图, RTC方框图, 音频CODEC控制框图和应用框图.
AT73C246 6 Supply Channel PMU With Audio Codec
The AT73C246 is an integrated high performance Power Management and Audio IC. It is specifically designed for advanced technology application processors with complex and low voltage supplies targeting audio applications from low to high end. This System-on-Chip allows significant savings in both cost and board area over previous discrete solutions.
..
