Datasheet > WM8912

WM8912

更新时间： 2024-09-17 11:59:15

品牌	Logo	应用领域
欧胜 - WOLFSON		驱动器便携式
页数	文件大小	规格书
128页	1259K
描述
Ultra Low Power DAC with Headphone Driver for Portable Audio Applications

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WM8912 数据手册

WM8912

Ultra Low Power DAC with Headphone Driver

for Portable Audio Applications

DESCRIPTION

FEATURES

•

3.8mW quiescent power consumption for DAC to

headphone playback

The WM8912 is a high performance ultra-low power stereo

DAC optimised for portable audio applications.

•

DAC SNR 96dB typical, THD -86dB typical

Class W ground-referenced headphone driver

The device features stereo ground-referenced headphone

amplifiers using the Wolfson ‘Class-W’ amplifier techniques

28mW per channel into 30Ω at <1% THD

32mW per channel into 15Ω at <1% THD

incorporating an innovative dual-mode charge pump

architecture - to optimise efficiency and power consumption

during playback. The ground-referenced outputs eliminate

headphone coupling capacitors. The outputs include

common mode feedback paths to reject ground noise.

•

Dynamic range controller

ReTune™ Mobile parametric equalizer

Control sequences for audio path setup can be pre-loaded

and executed by an integrated control write sequencer to

reduce software driver development and minimise pops and

clicks via Wolfson’s SilentSwitch™ technology.

•

Integrated control write sequencer for pop minimised start-

up and shutdown

Single register write for default start-up and shutdown

sequences

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.

ReTune^TMMobile 5-band parametric equaliser with fully

programmable coefficients is integrated for optimization of

speaker characteristics.

•

On-chip FLL provides all necessary clocks

DAC supports standard sample rates from 8kHz to 96kHz

•

32-pin QFN package (4x4mm, 0.4mm pitch)

Common audio sampling frequencies are supported from a

wide range of external clocks, either directly or generated

using the integrated FLL.

APPLICATIONS

•

Portable multimedia players

Multimedia handsets

Handheld gaming

The WM8912 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.

WOLFSON MICROELECTRONICS plc

Production Data, September 2010, Rev 4.0

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

12 3 4 5 6 7...128

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与WM8912相关器件

型号	品牌	获取价格	描述	数据表
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
WM8912GEFL/V	WOLFSON	获取价格	Ultra Low Power DAC with Headphone Driver for Portable Audio Applications
WM8918	CIRRUS	获取价格	Ultra Low Power DAC for Portable Audio Applications
WM8918CGEFL/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
WM8940	WOLFSON	获取价格	Mono CODEC with Speaker Driver
WM8940	CIRRUS	获取价格	Mono Codec with Speaker Driver
WM8940_07	WOLFSON	获取价格	Mono CODEC with Speaker Driver
WM8940_11	WOLFSON	获取价格	Mono CODEC with Speaker Driver

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