PRELIMINARY
CM1451
LCD & Camera EMI Filter Array with ESD Protection
Features
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High bandwidth, high RF rejection filter array
Six channels of EMI filtering
Utilizes
Praetorian™
inductor-based design tech-
nology for true L-C filter implementation
OptiGuard™
coating for improved reliability
±15kV
ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
±30kV
ESD protection on each channel (HBM)
Better than 40dB of attenuation at 1GHz
Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
15-bump, 3.006mm x 1.376mm footprint
Chip Scale Package (CM1451-06CS/CP)
Lead-free version available
Product Description
The CM1451 is an inductor-capacitor (L-C) based EMI
filter array with integrated ESD protection in CSP form
factor. The CM1451-06 is configured in a 6 channel
format. Each EMI filter channel of the CM1451 is
implemented as a 5-pole L-C filter where the compo-
nent values are 10pF-17nH-10pF-17nF-10pF. The
CM1451's roll-off frequency at -10dB attenuation is
400MHz and can be used in applications where the
data rates are as high as 120Mbps while providing
greater than 35dB over the 800MHz to 2.7GHz fre-
quency range. The parts integrate ESD protection
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 protection diodes connected to the filter ports are
designed and characterized to safely dissipate ESD
strikes of
±15kV,
beyond the Level 4 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. wireless handsets, PDAs) because of its
small package format and easy-to-use pin assign-
ments. In particular, the CM1451 is ideal for EMI filter-
ing and protecting data and control lines for the LCD
display and camera interface in wireless handsets.
The CM1451 incorporates
OptiGuard™
which results in
improved reliability at assembly. The CM1451 is avail-
able in a space saving, low profile Chip Scale Package
with optional lead-free finishing.
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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 phones in cell phones, PDAs
or notebook computersWireless handsets / cell
phones
Wireless Handsets
Handheld PCs/PDAs
LCD and camera modules
Electrical Schematic
L1
L2
FILTERn*
C
C
C
FILTERn*
GND
(Pins B1-Bn)
1 of 6 EMI Filtering + ESD Channels
* See Package/Pinout Diagram
for expanded pin information.
©
2005 California Micro Devices Corp. All rights reserved.
01/29/05
430 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.calmicro.com
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CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
