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WM8746EDS/R PDF预览

WM8746EDS/R

更新时间： 2024-11-22 21:02:31
品牌 Logo 应用领域
凌云 - CIRRUS 光电二极管转换器
页数 文件大小 规格书
32页 368K
描述
D/A Converter, 6 Func, PDSO28

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中文翻译

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WM8746EDS/R 技术参数

是否Rohs认证： 不符合生命周期：Active
包装说明：SSOP, SSOP28,.3Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：5.73
转换器类型：D/A CONVERTER输入位码：2'S COMPLEMENT
JESD-30 代码：R-PDSO-G28位数：24
功能数量：6端子数量：28
最高工作温度：85 °C最低工作温度：-25 °C
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP28,.3封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH电源：3.3/5 V
认证状态：Not Qualified子类别：Other Converters
表面贴装：YES技术：CMOS
温度等级：OTHER端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
Base Number Matches：1

WM8746EDS/R 数据手册

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WM8746  
24-bit, 192kHz 6-Channel DAC with Volume Control  
DESCRIPTION  
FEATURES  
•
•
6-Channel DAC  
WM8746 is a high performance 6-channel DAC designed  
for audio applications such as DVD, home theatre systems,  
and digital TV. The WM8746 supports data input word  
lengths from 16 to 32-bits and sampling rates up to 192kHz.  
The WM8746 can convert up to 6 channels at sample rates  
Audio Performance  
−
−
106dB SNR (‘A’ weighted @ 48kHz) DAC  
-95dB THD  
•
•
•
DAC Sampling Frequency: 8kHz – 192kHz  
3-Wire Serial Control Interface  
from  
8 to 192kHz. Additionally WM8746 supports 2  
channels at 192kHz and  
simultaneously.  
4
channels at 96kHz  
Programmable Audio Data Interface Modes  
−
−
I2S, Left, Right Justified or DSP  
The WM8746 consists of a serial interface port, digital  
interpolation filters, multi-bit sigma delta modulators and 6  
DACs in a small 28-pin SSOP package. The WM8746 also  
includes a digitally controllable mute and attenuator function  
on each channel.  
16/20/24/32 bit Word Lengths  
•
Independent Digital Volume Control on Each Channel with  
127.5dB Range in 0.5dB Steps  
•
•
•
•
3.0V – 5.5V Supply Operation  
28-Pin SSOP Package  
The WM8746 supports a variety of connection schemes for  
audio DAC control. The serial control interface provides  
access to a wide range of features including on-chip mute,  
attenuation and phase reversal. A hardware controllable  
interface is also available. It is pin-compatible with the  
WM8736, (apart from RSTB pin which is typically unused).  
Exceeds Dolby Class A Performance Requirements  
Pin Compatible with WM8736  
APPLICATIONS  
•
•
•
DVD and DVD ‘Universal’ Players  
Home theatre systems  
Digital broadcast receivers  
The WM8746 is an ideal device to interface to AC-3,  
DTS, and MPEG audio decoders for surround sound  
applications, or for use in “universal” high definition audio  
players supporting DVD-A formats.  
BLOCK DIAGRAM  
ML/I2S MC/IWL  
SCKI  
MD/DM  
MODE  
MUTE  
WM8746  
CONTROL  
INTERFACE  
L0A[7:0]  
OUT0L  
GR0  
Sigma  
Delta  
Modulator  
Digital  
Filter  
Stereo  
DAC  
BCKIN  
LRCIN  
OUT0R  
LRCIN2  
R0A[7:0]  
L1A[7:0]  
OUT1L  
GR1  
OUT1R  
DAC  
CHANNEL  
CONTROL  
Sigma  
Delta  
Modulator  
Digital  
Filter  
AUDIO  
INTERFACE  
Stereo  
DAC  
R1A[7:0]  
L2A[7:0]  
DIN0  
DIN1  
DIN2  
OUT2L  
GR2  
OUT2R  
Sigma  
Delta  
Modulator  
Digital  
Filter  
Stereo  
DAC  
R2A[7:0]  
CAP  
DVDD  
DGND  
AGND1 AGND2  
AVDD1  
AVDD2  
WOLFSON MICROELECTRONICS plc  
Production Data, August 2003, Rev 3.2  
Copyright 2003 Wolfson Microelectronics plc  
www.wolfsonmicro.com  
1234567...32

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 		Evaluation Board User Handbook

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