Datasheet > WM8903CLGEFK/R

WM8903CLGEFK/R

更新时间： 2024-11-26 12:26:15

品牌	Logo	应用领域
欧胜 - WOLFSON		解码器编解码器便携式
页数	文件大小	规格书
178页	1387K
描述
Ultra Low Power CODEC for Portable Audio Applications

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技术参数
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WM8903CLGEFK/R 技术参数

生命周期：	Transferred	Reach Compliance Code：	unknown
风险等级：	5.61	Base Number Matches：	1

WM8903CLGEFK/R 数据手册

WM8903

Ultra Low Power CODEC for Portable Audio Applications

DESCRIPTION

FEATURES



4.5mW power consumption for DAC to headphone

playback

The WM8903 is a high performance ultra-low power stereo

CODEC optimised for portable audio applications.



DAC SNR 96dB typical, THD -86dB typical

ADC SNR 92dB typical, THD -80dB typical

The device features stereo ground-referenced headphone

amplifiers using the Wolfson ‘Class W’ amplifier techniques -

incorporating an innovative dual-mode charge pump

architecture - to optimise efficiency and power consumption

during playback. The ground-referenced outputs eliminate

headphone coupling capacitors. Both headphone and line

outputs include common mode feedback paths to reject

ground noise.



Control sequencer for pop minimised start-up and shut-

down

Single register write for default start-up sequence



Integrated FLL provides all necessary clocks

Control sequences for audio path setup can be pre-loaded

and executed by an integrated sequencer to reduce

software driver development and eliminate pops and clicks

via Wolfson’s SilentSwitch™ technology.

Self-clocking modes allow processor to sleep

All standard sample rates from 8kHz to 96kHz



Stereo digital microphone input

The analogue input stage can be configured for single

ended or differential inputs. Up to 3 stereo microphone or

line inputs may be connected. The input impedance is

constant with PGA gain setting.

3 single ended inputs per stereo channel

1 fully differential mic / line input per stereo channel



Digital Dynamic Range Controller (compressor / limiter)

Digital sidetone mixing

A stereo digital microphone interface is provided, which can

also be mixed with the mic/line signals at the output mixers.

A dynamic range controller provides compression and level

control to support a wide range of portable recording

applications. Anti-clip and quick release features offer good

performance in the presence of loud impulsive noises.



Ground-referenced headphone driver

Ground-referenced line outputs

Stereo differential line driver for direct interface to WM9001

speaker driver

Common audio sampling frequencies are supported from a

range of external clocks, either directly or generated via the

Frequency Locked Loop (FLL).



40-pin QFN package (5x5mm)

The WM8903 can operate directly from a single 1.8V

switched supply. For optimal power consumption, the digital

core can be operated from a 1.0V supply.

APPLICATIONS



Portable multimedia players

Multimedia handsets

Handheld gaming

WOLFSON MICROELECTRONICS plc

Production Data, June 2012, Rev 4.5

To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews

12 3 4 5 6 7...178

中文翻译

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与WM8903CLGEFK/R相关器件

型号	品牌	获取价格	描述	数据表
WM8904	WOLFSON	获取价格	Ultra Low Power CODEC for Portable Audio Applications
WM8904	CIRRUS	获取价格	用于便携式音频应用的超低功耗编解码器
WM8904CGEFL/RV	WOLFSON	获取价格	Ultra Low Power CODEC for Portable Audio Applications
WM8904CGEFL/V	WOLFSON	获取价格	Ultra Low Power CODEC for Portable Audio Applications
WM8904ECS/R	WOLFSON	获取价格	Ultra Low Power CODEC for Portable Audio Applications
WM8904GEFL/V	CIRRUS	获取价格	PCM Codec, A/MU-Law, 1-Func, CMOS, PQCC32, 4 X 4 MM, 0.75 MM HEIGHT, 0.40 MM PITCH, LEAD F
WM8912	WOLFSON	获取价格	Ultra Low Power DAC with Headphone Driver for Portable Audio Applications
WM8912CGEFL/RV	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC32, 4 X 4 MM, 0.75 MM HEIGHT, 0.40 MM PITCH, LEAD FREE, PLASTI
WM8912CGEFL/V	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC32, 4 X 4 MM, 0.75 MM HEIGHT, 0.40 MM PITCH, LEAD FREE, PLASTI
WM8912GEFL/RV	WOLFSON	获取价格	Ultra Low Power DAC with Headphone Driver for Portable Audio Applications

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