Datasheet > WM8940

WM8940

更新时间： 2024-11-10 17:01:59

品牌	Logo	应用领域
凌云 - CIRRUS		/
页数	文件大小	规格书
88页	1206K
描述
Mono Codec with Speaker Driver

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

WM8940 数据手册

WM8940

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 8

•

Additional MONO Line output

Multiple analogue or ‘Aux’ inputs, plus analogue 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 -

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.

Rev 4.4

JAN 2022

http://www.cirrus.com

12 3 4 5 6 7...88

中文翻译

下载PDF

与WM8940相关器件

型号	品牌	获取价格	描述	数据表
WM8940_07	WOLFSON	获取价格	Mono CODEC with Speaker Driver
WM8940_11	WOLFSON	获取价格	Mono CODEC with Speaker Driver
WM8940CGEFL/RV	WOLFSON	获取价格	Mono CODEC with Speaker Driver
WM8940CGEFL/V	WOLFSON	获取价格	Mono CODEC with Speaker Driver
WM8940GEFL/RV	WOLFSON	获取价格	Mono CODEC with Speaker Driver
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

与WM8940相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

22
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

21
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

48
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

39

产品中心

服务支持

精选活动

关于我们

帮助中心

WM8940

WM8940 数据手册

与WM8940相关器件

与WM8940相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

WM8940

WM8940 数据手册

与WM8940相关器件

与WM8940相关文章

您还可以找

您在本页遇到什么问题？