5秒后页面跳转
WM8940GEFL/RV PDF预览

WM8940GEFL/RV

更新时间: 2024-11-07 03:33:43
品牌 Logo 应用领域
欧胜 - WOLFSON 解码器驱动器编解码器
页数 文件大小 规格书
85页 819K
描述
Mono CODEC with Speaker Driver

WM8940GEFL/RV 技术参数

是否Rohs认证: 符合生命周期:Transferred
Reach Compliance Code:unknown风险等级:5.61
湿度敏感等级:3Base Number Matches:1

WM8940GEFL/RV 数据手册

 浏览型号WM8940GEFL/RV的Datasheet PDF文件第2页浏览型号WM8940GEFL/RV的Datasheet PDF文件第3页浏览型号WM8940GEFL/RV的Datasheet PDF文件第4页浏览型号WM8940GEFL/RV的Datasheet PDF文件第5页浏览型号WM8940GEFL/RV的Datasheet PDF文件第6页浏览型号WM8940GEFL/RV的Datasheet PDF文件第7页 
WM8940  
w
Mono CODEC with Speaker Driver  
DESCRIPTION  
FEATURES  
Mono CODEC:  
The WM8940 is a low power, high quality mono CODEC  
designed for portable applications such as digital still cameras  
or camcorders.  
Audio sample rates:8, 11.025, 16, 22.05, 24, 32, 44.1, 48kHz  
DAC SNR 98dB, THD -84dB (‘A’-weighted @ 8 – 48ks/s)  
ADC SNR 94dB, THD -80dB (‘A’-weighted @ 8 – 48ks/s)  
On-chip Headphone/Speaker Driver  
The device integrates support for a differential or single ended  
mic, and includes drivers for speakers or headphone, and  
mono line output. External component requirements are  
reduced as no separate microphone or headphone amplifiers  
are required.  
-
-
40mW output power into 16  
BTL speaker drive 0.4W into 8Ω  
Additional MONO Line output  
Multiple analog or ‘Aux’ inputs, plus analog bypass path  
Advanced Sigma Delta Converters are used along with digital  
decimation and interpolation filters to give high quality audio at  
sample rates from 8 to 48ks/s. A selectable high pass filter  
and four fully-programmable notch filters are available in the  
ADC path. An advanced mixed signal ALC function with noise  
gate is provided, while readback of PGA gain during ALC  
operation is supported. The digital audio interface supports A-  
law and µ-law companding.  
Mic Preamps:  
Differential or single end Microphone Interface  
-
-
-
Programmable preamp gain  
Pseudo differential inputs with common mode rejection  
Programmable ALC / Noise Gate in ADC path  
Low-noise bias supplied for electret microphones  
OTHER FEATURES  
Digital Playback Limiter  
An on-chip PLL is provided to generate the required Master  
Clock from an external reference clock. The PLL clock can  
also be output if required elsewhere in the system.  
Programmable high pass filter (wind noise reduction)  
4 notch filters (narrowband noise suppression)  
On-chip PLL  
Low power, low voltage  
The WM8940 operates at supply voltages from 2.5 to 3.6V,  
although the digital supplies can operate at voltages down to  
1.71V to save power. Different sections of the chip can also be  
powered down under software control using the selectable two  
or three wire control interface.  
-
2.5V to 3.6V (digital: 1.71V to 3.6V)  
4x4x0.9mm 24 lead QFN package  
APPLICATIONS  
Digital still cameras and camcorders  
General purpose mono audio CODEC  
WM8940 is supplied in a very small 4x4mm QFN package,  
offering high levels of functionality in minimum board area,  
with high thermal performance.  
Pre-Production, Rev3.0, February2007,  
WOLFSON MICROELECTRONICS plc  
Copyright ©2007 Wolfson Microelectronics plc  
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/  

与WM8940GEFL/RV相关器件

型号 品牌 获取价格 描述 数据表
WM8940GEFL/V WOLFSON

获取价格

Mono CODEC with Speaker Driver
WM8941 WOLFSON

获取价格

Mono CODEC with Speaker Driver and Video Buffer
WM8941GEFL WOLFSON

获取价格

Mono CODEC with Speaker Driver and Video Buffer
WM8941GEFL/RV WOLFSON

获取价格

Mono CODEC with Speaker Driver and Video Buffer
WM8941GEFL/V WOLFSON

获取价格

Mono CODEC with Speaker Driver and Video Buffer
WM8941GEFLRV WOLFSON

获取价格

Mono CODEC with Speaker Driver and Video Buffer
WM8941GEFLV WOLFSON

获取价格

Mono CODEC with Speaker Driver and Video Buffer
WM8944 CIRRUS

获取价格

带视频缓冲器的单声道编解码器
WM8944B CIRRUS

获取价格

Mono Low-Power CODEC with Video Buffer
WM8944BECS/R CIRRUS

获取价格

PCM Codec, A/MU-Law, 1-Func, CMOS, PBGA25, WCSP-25