CM1405
LCD EMI Filter Array with ESD Protection
Features
•
•
•
•
•
Eight channels of EMI filtering
±30kV
ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
±30kV
ESD protection on each channel (HBM)
Better than 35dB of attenuation at 800-2700MHz
Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
20-bump, 4.000mm x 1.458mm footprint
Chip Scale Package
OptiGuard
™
coated version available for
improved reliability at assembly
Lead-free version available
Product Description
California Micro Device's CM1405 is an EMI filter array
with ESD protection, which integrates eight Pi- filters
(C-R-C). The CM1405 has component values of 25pF-
100Ω-25pF. The parts include avalanche-type ESD
diodes on every pin, which provide a very high level of
protection for sensitive electronic components that may
be subjected to electrostatic discharge (ESD). The
ESD diodes connected to the filter ports are designed
and characterized to safely dissipate ESD strikes of
±30kV,
exceeding the maximum requirement of the
IEC61000-4-2 international standard. Using the MIL-
STD-883 (Method 3015) specification for Human Body
Model (HBM) ESD, the pins are protected for contact
discharges at greater than
±30kV.
This device is particularly well suited for portable elec-
tronics (e.g. mobile handsets, PDAs, notebook comput-
ers) because of its small package format and easy-to-
use pin assignments. In particular, the CM1405 is
ideal for EMI filtering and protecting data lines from
ESD for the LCD display in mobile handsets.
The CM1405-03 incorporates OptiGuard
™
coating
which results in improved reliability at assembly and is
available in space-saving, low-profile chip-scale pack-
ages with optional lead-free finishing.
•
•
•
Applications
•
•
•
•
•
•
•
LCD data lines in mobile handsets
EMI filtering & ESD protection for high-speed I/O
ports
EMI filtering for high-speed data lines
Wireless handsets
Cell phones
Notebook computers
PDAs / Handheld PCs
Electrical Schematic
100Ω
FILTERn*
25pF
25pF
FILTERn*
GND
(Pins B1-Bn)
1 of 8 EMI Filtering + ESD Channels
* See Package/Pinout Diagram for expanded pin information.
©
2004 California Micro Devices Corp. All rights reserved.
06/16/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
