PRELIMINARY
CM1681
2 Channel EMI Filter with ESD Protection
for Headset Speaker Applications
Features
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2 channels of EMI filtering
Pi-style filters in a capacitor-resistor-capacitor
(C-R-C) network
8kV ESD protection (IEC 61000-4-2, contact
discharge)
15kV ESD protection (HBM)
Supports AC signals - ideal for audio applications
Greater than 40dB of attenuation at 1GHz
8-lead, 2.00mm x 2.00mm footprint uDFN Package
Low profile height of 0.5mm
Lead-free finishing
Applications
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Headset speaker port in mobile handsets
I/O port protection for mobile handsets, notebook
computers, PDAs etc.
EMI filtering for data ports in cell phones, PDAs or
notebook computers.
Electrical Schematic
Filter #1
1
10Ω
R
8
100pF
C
Filter #1
100pF
C
Filter #2
4
10Ω
R
5
100pF
C
Filter #2
100pF
C
© 2007 California Micro Devices Corp. All rights reserved.
04/09/07
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
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Tel: 408.263.3214
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Fax: 408.263.7846
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www.cmd.com
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CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
