音频编解码器ADAU1361

ADAU1361Rev.CInformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,noresponsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.Specicationssubjecttochangewithoutnotice.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.OneTechnologyWay,P.O.Box9106,Norwood,MA02062-9106,U.S.A.Tel:[phone]©2009–2010AnalogDevices,Inc.Allrightsreserved.功能框图HPJACKDETECTIONREGULATORINPUTMIXERSALCMICROPHONEBIASPLLLINNLINPLAUXJACKDET/MICINRINPRINNRAUXMICBIASLHPLOUTNLOUTPADAU1361RHPMONOOUTROUTPROUTNCMIOVDDDGNDDVDDOUTAGNDAVDDAVDDAGNDOUTPUTMIXERSDACDIGITALFILTERSADCDIGITALFILTERSDACDACADCADCSDA/COUTI2C/SPICONTROLPORTSERIALDATAINPUT/OUTPUTPORTSMCLKADC_SDATABCLKSCL/CCLKADDR1/CDATAADDR0/CLATCHLRCLKDAC_SDATA07679-001特性24位立体声音频ADC和DAC：SNR大于98dB采样速率范围：8kHz至96kHz低功耗：7mW录音，7mW回放，48kHz和1.8V条件下6个模拟输入引脚，可配置为单端或差分输入灵活的模拟输入/输出混频器立体声数字麦克风输入模拟输出：2路差分立体声、2路单端立体声、1路单声道耳机驱动器输出PLL支持的输入时钟范围：8MHz至27MHz模拟自动电平控制(ALC)麦克风偏置基准电压模拟和数字I/O：1.8V至3.65VI2C和SPI控制接口数字音频串行数据I/O：立体声和时分多路复用(TDM)模式软件可控无杂音静音功能软件省电功能32引脚、5mm×5mmLFCSP封装工作温度范围：−40°C至+85°C应用智能电话和多媒体电话数码相机和数码摄像机便携式媒体播放器和便携式音频播放器电话配件概述ADAU1361是一款低功耗、立体声音频编解码器，支持立体声48kHz录音和回放，采用1.8V模拟电源供电，功耗为14mW。立体声音频ADC和DAC支持8kHz至96kHz范围内的采样速率，并支持数字音量控制。该器件非常适合电池供电的音频和电话应用。录音路径包括一个集成麦克风偏置电路和六路输入。可以在ADC之前将这些输入混频和多路复用，或者可以对其配置来旁路ADC。ADAU1361含有一路立体声数字麦克风输入。ADAU1361内置五个高功率输出驱动器(两个差分、三个单端)，支持立体声耳机、听筒或其它输出传感器。该器件还支持交流耦合或无电容配置。所有模拟输出均支持独立精密电平控制。输出混频器级允许音频灵活路由。串行控制总线支持I2C和SPI协议。串行音频总线可编程为I2S、左/右对齐或TDM模式。通过编程PLL可从8MHz到27MHz灵活产生所有标准整数倍时钟频率和小数主时钟频率。图1.集成PLL的立体声、低功耗、96kHz、24位音频编解码器ADI中文版数据手册是英文版数据手册的译文，敬请谅解翻译中可能存在的语言组织或翻译错误，ADI不对翻译中存在的差异或由此产生的错误负责。如需确认任何词语的准确性，请参考ADI提供的最新英文版数据手册。ADAU1361Rev.C|Page2of80目录特性.....................................................................................................1应用.....................................................................................................1概述.....................................................................................................1功能框图............................................................................................1修订历史............................................................................................3技术规格............................................................................................4模拟性能规格..............................................................................4电源规格.......................................................................................7典型功耗.......................................................................................8典型功耗管理测量结果............................................................9数字滤波器................................................................................10数字输入/输出规格..................................................................10数字时序规格............................................................................11数字时序图................................................................................12绝对最大额定值.............................................................................14热阻.............................................................................................14ESD警告......................................................................................14引脚配置和功能描述....................................................................15典型工作特性.................................................................................17系统框图..........................................................................................20工作原理..........................................................................................23启动、初始化和电源....................................................................24上电序列.....................................................................................24降低功耗模式............................................................................24数字电源.....................................................................................24输入/输出电源..........................................................................24时钟产生和管理........................................................................24时钟和采样速率.............................................................................26内核时钟.....................................................................................26采样速率.....................................................................................26PLL...............................................................................................27录音信号路径.................................................................................29输入信号路径............................................................................29模数转换器................................................................................31自动电平控制(ALC).....................................................................32ALC参数.............................