生产数据

WM8903

目录

描述....................................................................................................... 1

特点............................................................................................................ 1

APPLICATIONS..................................................................................................... 1

框图................................................ ................................................ 2

目录............................................... .......................................... 3

引脚配置................................................ .......................................... 6

订购信息................................................ .................................. 6

引脚说明................................................ ................................................ 7

绝对最大额定值............................................... ......................... 8

推荐工作条件............................................... ...... 8

电气特性................................................ ..................... 9

术语............................................................................................................... 9

通用测试条件............................................... ........................................ 9

输入信号路径............................................... .................................................. ... 10

输出信号路径............................................... ................................................. 12

旁路路径.............................................................................................................. 14

电荷泵............................................................................................................. 15

FLL ................................................................................................................................. 15

其他参数................................................ ................................................. 15

耗电量................................................ .................................... 17

通用测试条件............................................... ...................................... 17

功耗测量............................................... ................ 17

信号时序要求............................................... ..................... 19

通用测试条件............................................... ...................................... 19

主时钟........................................................................................................... 19

音频接口时序............................................... .......................................... 20

主模式.............................................................................................................................................................. 20

SLAVE MODE.................................................................................................................................................................. 21

TDM模式..................................................................................................................................................................... 22

控制接口时序............................................... .................................... 23

数字滤波器特性............................................... ............... 24

DAC，滤波器响应............................................... ............................................ 25

ADC滤波器响应............................................... ............................................ 26

ADC高通滤波器响应............................................. .......................... 27

去加重滤波器响应............................................. ............................. 28

设备描述................................................ ...................................... 29

引言............................................................................................................ 29

模拟输入信号路径.............................................. ................................. 30

输入PGA启用...................................................................................................................................................... 31

输入PGA配置...................................................................................................................................... 31

单端输入.................................................................................................................................................. 33

差分线路INPUT........................................................................................................................................... 33

差分麦克风输入.......................................................................................................................... 34

输入PGA增益控制......................................................................................................................................... 34

PGA输入共模放大器.................................................................................................................... 36

驻极体电容麦克风接口.............................................. 37

MICBIAS电流检测........................................................................................................................................ 37

MICBIAS电流检测滤波.................................................................................................................... 38

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PD ，版本4.5 ， 2012年6月

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