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CM1411 PDF预览

CM1411

更新时间: 2024-10-03 04:12:15
品牌 Logo 应用领域
CALMIRCO /
页数 文件大小 规格书
6页 373K
描述
2 Channel Headset/Speaker EMI Filter with ESD Protection

CM1411 数据手册

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CM1411  
2 Channel Headset/Speaker EMI Filter with ESD Protection  
Features  
Product Description  
Functionally and pin compatible with CMD’s  
CSPEMI201A  
OptiGuardcoated for improved reliability at  
assembly  
Two channels of EMI filtering  
Pi-style EMI filters in a capacitor-resistor-capacitor  
(C-R-C) network  
Greater than 40dB attenuation at 1GHz  
+8kV ESD protection on each channel  
(IEC 61000-4-2 Level 4, contact discharge)  
+15kV ESD protection in each channel (HBM)  
Supports AC signals—ideal for audio applications  
Extremely low lead inductance for optimum filter  
and ESD performance  
The CM1411 is a dual low-pass filter array integrating  
two pi-style filters (C-R-C) that reduce EMI/RFI emis-  
sions while at the same time providing ESD protection.  
This part is custom-designed to interface with a  
speaker port on a cellular telephone or similar device.  
Each high quality filter provides more than 35dB atten-  
uation in the 800-2700 MHz range. These pi-style fil-  
ters support bidirectional filtering, controlling EMI both  
to and from a speaker element. They also support AC  
signals with a cutoff frequency of 31MHz, enabling  
audio signals to pass through without distortion.  
In addition, the CM1411 provides a very high level of  
protection for sensitive electronic components that may  
be subjected to electrostatic discharge (ESD). The  
CM1411 can safely dissipate ESD strikes of 8kV, the  
maximum requirement of the IEC 61000-4-2 interna-  
tional standard. Using the MIL-STD-883 (Method 3015)  
specification for Human Body Model (HBM) ESD, the  
device provides protection for contact discharges to  
greater than 15kV.  
5-bump, 0.950mm X 1.410mm footprint  
Chip Scale Package (CSP)  
Lead-free version available  
Applications  
EMI filtering and ESD protection for  
headset/speaker ports  
Wireless Handsets  
Handheld PCs / PDAs  
MP3 Players  
Digital Camcorders  
Notebooks  
Desktop PCs  
The CM1411 is particularly well-suited for portable  
electronics (e.g., cellular telephones, PDAs, notebook  
computers) because of its small package format and  
low weight. The CM1411 incorporates OptiGuard™  
coating which results in improved reliability at assem-  
bly and is available in a space-saving, low-profile Chip  
Scale Package with optional lead-free finishing.  
Electrical Schematic  
10Ω  
C1  
A1  
SPKR_IN1  
SPKR_OUT1  
100pF  
100pF  
10Ω  
C3  
A3  
SPKR_IN2  
SPKR_OUT2  
100pF  
100pF  
B2  
GND  
© 2005 California Micro Devices Corp. All rights reserved.  
09/15/05 490 N. McCarthy Blvd., Milpitas, CA 95035-5112  
Tel: 408.263.3214  
Fax: 408.263.7846  
www.calmicro.com  
1

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