CM1485 Datasheet, PDF (1/6 Pages) California Micro Devices Corp – Dual Channel EMI Filter with ESD Protection

PRELIMINARY
CM1485
Dual Channel EMI Filter with ESD Protection
Features
• Two channels of EMI filtering with integrated ESD
protection
• Pi-style EMI filters in a capacitor-resistor-capacitor
(C-R-C) network
• ±15kV ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
• ±30kV ESD protection on each channel (HBM)
• Greater than 30dB attenuation (typical) at 1 GHz
• 6-lead SOT-563 package
• Available with lead-free finishing
Applications
• 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 CM1485 is a 2 channel pi-style EMI filter array with
ESD protection, housed in a 6-lead SOT-563 package.
The CM1485 has component values of 16pF-100Ω-
16pF per channel. The CM1485 has a cut-off fre-
quency of 125MHz and can be used in applications
with data rates up to 48Mbps. The parts include 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 protection diodes safely dissipate ESD strikes of
±15kV, well beyond 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. wireless handsets, PDAs, notebook com-
puters) because of its small package and easy-to-use
pin assignments. In particular, the CM1485 is ideal for
EMI filtering and protecting data and control lines for
the I/O data ports, LCD display and camera interface in
mobile handsets.
The CM1485 is housed in a small, 6-lead SOT-563
package and is available with lead-free finishing.
Electrical Schematic
FILTER+ESDn*
GND
100Ω
16pF ^R
C
16pF
C
FILTER+ESDn*
1 of 2 EMI/RFI + ESD Channels
* See Package/Pinout Diagram
for expanded pin information.
© 2006 California Micro Devices Corp. All rights reserved.
05/12/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: [phone] ● Fax: [phone] ● www.cmd.com
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