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WM8945 参数 Datasheet PDF下载

WM8945图片预览
型号: WM8945
PDF下载: 下载PDF文件 查看货源
内容描述: 单声道低功耗编解码器与视频缓冲器和触摸屏控制器 [Mono Low-Power CODEC with Video Buffer and Touch Panel Controller]
分类和应用: 解码器编解码器控制器
文件页数/大小: 169 页 / 1604 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM8945  
Production Data  
ABSOLUTE MAXIMUM RATINGS  
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously  
operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given  
under Electrical Characteristics at the test conditions specified.  
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible  
to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage  
of this device.  
Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage  
conditions prior to surface mount assembly. These levels are:  
MSL1 = unlimited floor life at <30C / 85% Relative Humidity. Not normally stored in moisture barrier bag.  
MSL2 = out of bag storage for 1 year at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.  
MSL3 = out of bag storage for 168 hours at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.  
The Moisture Sensitivity Level for each package type is specified in Ordering Information.  
CONDITION  
MIN  
-0.3V  
-0.3V  
-0.7V  
-0.7V  
-40ºC  
-40ºC  
-65ºC  
MAX  
2.5V  
Supply voltages (DCVDD)  
Supply voltages (LDOVDD, DBVDD, SPKVDD)  
Voltage range digital inputs  
4.5V  
DBVDD +0.7V  
LDOVDD +0.7V  
+85ºC  
Voltage range analogue inputs  
Operating temperature range, TA  
Junction temperature, TJMAX  
+150ºC  
Storage temperature after soldering  
+150ºC  
RECOMMENDED OPERATING CONDITIONS  
PARAMETER  
SYMBOL  
DCVDD  
DBVDD  
LDOVDD  
SPKVDD  
GND  
MIN  
1.62  
1.71  
2.4  
TYP  
MAX  
UNIT  
Digital supply range (Core)  
Digital supply range (I/O)  
Analogue supply  
Speaker supply range  
Ground  
1.8  
3.3  
3.3  
3.3  
0
1.98  
3.6  
V
V
V
V
V
3.6  
3.6  
1.71  
Note:  
To ensure pop-free device start-up, LDOVDD must be enabled before SPKVDD  
PD, May 2011, Rev 4.1  
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