CM1484 Просмотр технического описания (PDF) - California Micro Devices Corp

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CM1484

Dual Channel EMI Filter with ESD Protection

California Micro Devices Corp 

PRELIMINARY

CM1484

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 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 2 channel pi-style EMI filter array with

ESD protection, housed in a 5-lead SC-70 package.

The CM1484 has component values of 11pF-100Ω-

11pF per channel. The CM1484 has a cut-off fre-

quency 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 pack-

age and is available with lead-free finishing

.

Electrical Schematic

FILTER+ESDn*

GND

100Ω

11pF

R

11pF

C

C

FILTER+ESDn*

* See Package/Pinout Diagram

for expanded pin information.

1 of 2 EMI/RFI Filter Channels

with Integrated ESD Protection

© 2006 California Micro Devices Corp. All rights reserved.

05/12/06

490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.cmd.com

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