CM1420 Datasheet, PDF (1/12 Pages) California Micro Devices Corp – LCD EMI Filter Array with ESD Protection

CM1420/22
LCD EMI Filter Array with ESD Protection
Features
• Functionally and pin compatible with CSPEMI606
(CM1420) and CSPEMI608 (CM1422) devices
• Optiguard^TM coated for improved reliability at
assembly
• Six and eight channels of EMI filtering
• +15kV ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
• +30kV ESD protection on each channel (HBM)
• Better than 30dB of attenuation at 1GHz to 3GHz
• Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
• 15-bump, 2.960mm x 1.330mm footprint
Chip Scale Package (CM1420)
• 20-bump, 4.000mm x 1.458mm footprint
Chip Scale Package (CM1422)
• Lead-free version available
Applications
• LCD data lines in clamshell wireless handsets
• EMI filtering & ESD protection for high-speed I/O
data ports
• Wireless handsets / cell phones
• Notebook computers
• PDAs / Handheld PCs
• EMI filtering for high-speed data lines
Product Description
CAMD's CM1420 and CM1422 are EMI filter arrays
with ESD protection, which integrate six and eight Pi-
filters (C-R-C), respectively. The CM1420/22 has com-
ponent values of 15pF-100Ω-15pF. These devices
include ESD protection diodes on every pin, which pro-
vide a very high level of protection for sensitive elec-
tronic 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. wireless handsets, PDAs, notebook com-
puters) because of its small package format and easy-
to-use pin assignments. In particular, the CM1420/22
is ideal for EMI filtering and protecting data lines from
ESD for the LCD display in clamshell handsets.
The CM1420 and CM1422 incorporate Optiguard^TM
coating which results in improved reliability at assem-
bly. The CM1420 and CM1422 are available in space-
saving, low-profile chip-scale packages with optional
lead-free finishing.
Electrical Schematic
FILTERn*
100Ω
15pF
15pF
FILTERn*
GND
(Pins B1-Bn)
1 of n EMI Filtering + ESD Channels
(n=6 for CM1420, 8 for CM1422)
* See Package/Pinout Diagram for expanded pin information.
© 2004 California Micro Devices Corp. All rights reserved.
04/27/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: [phone] ▲ Fax: [phone] ▲ www.calmicro.com
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