CM1425 Datasheet, PDF (1/7 Pages) California Micro Devices Corp – 4 Channel EMI Filter Array with ESD Protection

PRELIMINARY
CM1425
4 Channel EMI Filter Array with ESD Protection
Features
• Four channels of EMI filtering with ESD protection
• Pin compatible with CMD’s CSPRC032A
• Greater than 30dB attenuation over the 800MHz to
3GHz frequency range
• ±15kV ESD protection (IEC 61000-4-2, contact
discharge)
• ±30kV ESD protection (HBM)
• 9-bump, 2.470mm x 0.970mm footprint Chip Scale
Package (CSP)
• Available with Optiguard™ coating for improved
reliability
• Lead-free versions available
Applications
• FIltering for antenna and keypad data lines
• I/O port protection for mobile handsets, notebook
computers, PDAs etc.
• EMI filtering for data ports in cell phones, PDAs or
notebook computers.
• EMI filtering for LCD and chip-to-chip data lines in
mobile electronic devices that use flexible PCB
interconnections
Product Description
CAMD's CM1425 is an EMI filter array with ESD pro-
tection, which integrates 4 pi filters (C-R-C). The
CM1425 has component values of 20pF-100Ω-20pF.
The parts include ESD protection diodes on every pin,
which provide a very high level of protection for sensi-
tive electronic components that may be subjected to
electrostatic discharge (ESD). The ESD diodes con-
nected to the filter ports are designed and character-
ized to safely dissipate ESD strikes of ±15kV, beyond
the maximum requirement of the IEC 61000-4-2 inter-
national 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 CM1425 is
ideal for EMI filtering and protecting data lines from
ESD in wireless handsets.
All CM1425 devices are optionally available with Opti-
Guard™ coating which results in improved reliability at
assembly. These devices are also available with stan-
dard and lead-free finishing. The CM1425 is housed in
a space-saving, low-profile, chip-scale package and is
fabricated with California Micro Devices' Centurion™
processes.
Electrical Schematic
FILTER+ESD1*
100Ω
20pF
20pF
FILTER+ESD1* FILTER+ESD3*
GND
(Pin B3)
100Ω
20pF
20pF
FILTER+ESD3*
FILTER+ESD2*
100Ω
20pF
20pF
FILTER+ESD2* FILTER+ESD4*
100Ω
20pF
20pF
FILTER+ESD4*
© 2004 California Micro Devices Corp. All rights reserved.
04/21/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲ Tel: [phone] ▲ Fax: [phone] ▲ www.calmicro.com
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