Issue X-1
CM1456-04
Praetorian™
4-Channel LCD Camera EMI Filter
Array with ESD Protection
Features
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4 channels of EMI filtering
±15kV ESD protection (IEC 61000-4-2, contact
discharge)
Greater than -40dB of attenuation at 1GHz
Chip Scale Package (CSP) with 0.40mm pitch and
0.25mm CSP solder ball which features extremely
low parasitic inductance for optimum filter and ESD
performance
OptiGuard™
coating for improved reliability at
assembly
RoHS compliant
form factor with 0.40mm pitch. Each EMI filter channel
of the CM1456-04 is implemented as a 3-pole L-C filter
where the component values are 9pF-23nH-9pF. The
roll-off frequency at -6dB attenuation is 380MHz and
can be used in applications where the data rates are as
high as 160Mbps while providing greater than -35dB
over the 800MHz to 2.7GHz frequency range. The
parts include ESD diodes on every I/O pin, that provide
a high level of protection against electrostatic
discharge (ESD). The ESD protection diodes
connected to the filter ports are designed and
characterized to safely dissipate ESD strikes of
±15kV,
beyond the maximum requirement of the IEC61000-4-
2 international standard.
This device is particularly well suited for wireless
handsets, mobile LCD modules and PDAs because of
its small package format and easy-to-use pin
assignments. In particular, the CM1456-04 is ideal for
EMI filtering and protecting data and control lines for
the LCD display and camera interface in mobile
handsets.
The CM1456-04 incorporates
OptiGuard™
which
results in improved reliability at assembly. It is
manufactured with a 0.40mm pitch and 0.25mm CSP
solder ball to provide up to 28% board space savings
vs. competing CSP devices with 0.50mm pitch and
0.30mm CSP solder ball.
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Applications
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LCD and Camera data lines 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
Wireless handsets
Handheld PCs/PDAs
LCD and camera modules
Product Description
The CM1456-04 is a pi-style EMI filter array with ESD
protection, which integrates four filters (C-L-C) in CSP
Electrical Schematic
23nH
An
9pF
9pF
Cn
m
Bn
1 of 4 Channels
© 2008 California Micro Devices Corp. All rights reserved.
03/24/08
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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CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
