Dual Channel EMI Filter

with ESD Protection

CM1484

©2010 SCILLC. All rights reserved.

Publication Order Number:

May 2010 – Rev. 0

CM1484/D

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 20dB attenuation (typical) at 1

GHz

•

5-lead SC70 package

•

Lead-free version available

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 CM1484 is a two channel pi-style EMI filter

array with ESD protection, housed in a 5-lead SC-

70 package. The CM1484 has component values of

11pF-100W-11pF per channel. The CM1484 has a

cut-off frequency of 220MHz and can be used in

applications with data rates up to 80Mbps. 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.

These

devices

are

particularly

well-suited

for

portable electronics (e.g. wireless handsets, PDAs,

notebook

computers)

because

of

their

small

package and easy-to-use pin assignments. In

particular, the CM1484 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 CM1484 is housed in a small, 5-lead SC70

package and is available with lead-free finishing.