Datasheet > WM8950

WM8950

更新时间： 2024-11-25 22:35:43

品牌	Logo	应用领域
欧胜 - WOLFSON		输入元件 LTE
页数	文件大小	规格书
52页	669K
描述
ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS

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WM8950 数据手册

WM8950

ADC with Microphone Input and Programmable Digital Filters

DESCRIPTION

FEATURES

•

Mono ADC:

The WM8950 is a low power, high quality mono ADC designed

for portable applications such as Digital Still Camera, Digital

Voice Recorder or games console accessories.

Audio sample rates:8, 11.025, 16, 22.05, 24, 32, 44.1, 48kHz

SNR 95dB, THD -85dB (‘A’-weighted @ 8 – 48ks/s)

Multiple auxiliary analog inputs

Mic Preamps:

Differential or single end Microphone Interface

The device integrates support for a differential or single ended

mic. External component requirements are reduced as no

separate microphone amplifiers are required.

Programmable preamp gain

Psuedo differential inputs with common mode rejection

Programmable ALC / Noise Gate in ADC path

Advanced Sigma Delta Converters are used along with digital

decimation filters to give high quality audio at sample rates

•

Low-noise bias supplied for electret microphones

from

8 to 48ks/s. Additional digital filtering options are

available, to cater for application filtering such as wind noise

reduction, noise rejection, plus an advanced mixed signal ALC

function with noise gate is provided.

OTHER FEATURES

•

5 band EQ

Programmable High Pass Filter (wind noise reduction)

Fully Programmable IIR Filter (notch filter)

On-chip PLL

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.

Low power, low voltage

2.5V to 3.6V (digital: 1.71V to 3.6V)

power consumption TBD all-on 48ks/s mode

The WM8950 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 by way of the selectable

two or three wire control interface.

•

4x4x0.9mm 24 pin QFN package

APPLICATIONS

•

Digital Still Camera

WM8950 is supplied in a very small 4x4mm QFN package,

offering high levels of functionality in minimum board area,

with high thermal performance.

General Purpose low power audio ADC

Games console accessories

Voice recorders

Preliminary Technical Data, June 2005, Rev 2.1

WOLFSON MICROELECTRONICS plc

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

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与WM8950相关器件

型号	品牌	获取价格	描述	数据表
WM8950CGEFL/RV	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC24, 4 X 4 MM, 0.90 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, PLASTI
WM8950CGEFL/V	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC24, 4 X 4 MM, 0.90 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, PLASTI
WM8950GEFL/RV	WOLFSON	获取价格	ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS
WM8950GEFL/V	WOLFSON	获取价格	ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS
WM8951L	WOLFSON	获取价格	STEREO ADC WITH MICROPHONE INPUT AND CLOCK GENERATOR
WM8951L_07	WOLFSON	获取价格	Stereo ADC with Microphone Input and Clock Generator
WM8951LGEFL	WOLFSON	获取价格	STEREO ADC WITH MICROPHONE INPUT AND CLOCK GENERATOR
WM8951LGEFL/R	WOLFSON	获取价格	STEREO ADC WITH MICROPHONE INPUT AND CLOCK GENERATOR
WM8952	WOLFSON	获取价格	Mono ADC with Microphone Pre-amplifier
WM8952ECS/RV	WOLFSON	获取价格	Mono ADC with Microphone Pre-amplifier

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