Datasheet > WM8945

WM8945

更新时间： 2024-11-26 12:23:27

品牌	Logo	应用领域
欧胜 - WOLFSON		解码器编解码器控制器
页数	文件大小	规格书
169页	1604K
描述
Mono Low-Power CODEC with Video Buffer and Touch Panel Controller

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WM8945 数据手册

WM8945

Mono Low-Power CODEC with

Video Buffer and Touch Panel Controller

DESCRIPTION

FEATURES



Hi-fi audio CODEC

The WM8945 is a highly integrated low power hi-fi CODEC

designed for portable devices such as digital still cameras.

94dB SNR during ADC recording (‘A’ weighted)

96dB SNR during DAC playback (‘A’ weighted)

Up to 4 analogue inputs may be connected; a digital microphone

interface is also provided. Flexible output mixing options support

single-ended and differential configurations, with outputs derived

from the digital audio paths or from analogue bypass paths.

Mono line output and mono BTL headphone/speaker drive is

supported.



4 analogue audio inputs

Integrated bias reference for electret microphones

Digital microphone interface

Powerful digital mixing / DSP functions:

5-notch filters

5-band equalizer (EQ)

ReTune™ parametric filter

Dynamic range control and noise gate

Low-pass/High-pass filters

Direct Form 1 (DF1) programmable digital filter

Flexible digital mixing and powerful DSP functions are available.

Programmable filters and other processes may be applied to the

ADC or DAC signal paths. The DSP functions include 5 notch

filters, 5-band EQ, dynamic range control and the Wolfson

ReTune™ feature.



Digital beep generator

Mono line output

The ReTune™ feature is a sophisticated digital filter that can

compensate for imperfect characteristics of the housing,

loudspeaker or microphone components in an application. The

ReTune™ algorithm can provide acoustic equalisation and

selective phase (delay) control of specific frequency bands.

Mono BTL headphone/speaker output driver

I2S digital audio interface - sample rates 8kHz to 48kHz

Frequency Locked Loop (FLL) frequency conversion / filter

Video buffer function

4-wire Touch Panel interface controller

Auxiliary ADC for DC measurement or battery monitoring

Integrated LDO low-noise voltage regulator

36-ball W-CSP package (2.96 x 3.06 x 0.7mm, 0.5mm pitch)

The WM8945 is controlled via an I2C or SPI interface. Additional

functions include 4-wire Touch Panel controller, Auxiliary ADC,

Digital beep generator, Video buffer, programmable GPIO

functions, Frequency Locked Loop (FLL) for flexible clocking

support and integrated LDO for low noise supply regulation.

APPLICATIONS



Digital Still Cameras (DSC)

Multimedia phones

The WM8945 is supplied in 36-ball W-CSP package, ideal for

portable systems.

DCVDD

DBVDD

SPKVDD

VBIN

VBREFR

VBOUT

CURRENT MODE

VIDEO BUFFER

TOUCH PANEL

INTERFACE

WM8945

AUX ADC

AUX1

AUX2

LINEOUTL

Analogue Mic

Mux / PGA

IN1L/DMICDAT

IN2L

ADC L

DAC L

OUTPUT

MIXERS

-1

SPKOUTL

SPKOUTR

ADC /

DSP Core

(Re-Tune EQ,

Dynamic Range

Control)

DAC

Digital

Filters

Record

Digital

Filters

DMICDAT

Digital Mic

Interface

DMICCLK

(GPIO)

Digital Beep

Generator

DIGITAL AUDIO

INTERFACE

CONTROL

INTERFACE

FLL

GPIO

MICBIAS

Reference

LDO

Production Data, May 2011, Rev 4.1

WOLFSON MICROELECTRONICS plc

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

12 3 4 5 6 7...169

中文翻译

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与WM8945相关器件

型号	品牌	获取价格	描述	数据表
WM8945ECS/R	WOLFSON	获取价格	Mono Low-Power CODEC with Video Buffer and Touch Panel Controller
WM8946	WOLFSON	获取价格	Stereo Low-Power CODEC with Video Buffer
WM8946	CIRRUS	获取价格	带视频缓冲器的立体声编解码器
WM8946ECS/R	WOLFSON	获取价格	Stereo Low-Power CODEC with Video Buffer
WM8948	WOLFSON	获取价格	Stereo Low-Power CODEC with Video Buffer and Touch Panel Controller
WM8948ECS/R	WOLFSON	获取价格	Stereo Low-Power CODEC with Video Buffer and Touch Panel Controller
WM8950	WOLFSON	获取价格	ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS
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

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