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WM8912CGEFL/RV PDF预览

WM8912CGEFL/RV

更新时间: 2024-11-09 20:42:15
品牌 Logo 应用领域
凌云 - CIRRUS /
页数 文件大小 规格书
129页 1313K
描述
Consumer Circuit, CMOS, PQCC32, 4 X 4 MM, 0.75 MM HEIGHT, 0.40 MM PITCH, LEAD FREE, PLASTIC, QFN-32

WM8912CGEFL/RV 技术参数

是否Rohs认证: 符合生命周期:Obsolete
包装说明:HVQCCN,Reach Compliance Code:compliant
HTS代码:8542.39.00.01风险等级:5.82
其他特性:IT ALSO REQUIRES ANALOG SUPPLY RANGE 1.71 TO 2 VOLT商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:S-PQCC-N32长度:4 mm
功能数量:1端子数量:32
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:HVQCCN
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
座面最大高度:0.8 mm最大供电电压 (Vsup):1.98 V
最小供电电压 (Vsup):0.95 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子形式:NO LEAD端子节距:0.4 mm
端子位置:QUAD宽度:4 mm
Base Number Matches:1

WM8912CGEFL/RV 数据手册

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WM8912  
w
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 -  
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.  
-
28mW per channel into 30at <1% THD  
32mW per channel into 15at <1% THD  
-
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.  
ReTuneTM Mobile 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, February 2013, Rev 4.1  
Copyright 2013 Wolfson Microelectronics plc  

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