2-Channel Headset/Microphone EMI

Filter Array with ESD Protection

CM1412

©2010 SCILLC. All rights reserved.

Publication Order Number:

April 2010 Rev. 3

CM1412/D

Features

•

Functionally and pin compatible with CMD’s

CSPEMI202A

•

OptiGuard

assembly

•

Two channels of EMI filtering

•

Pi-style EMI filters in a capacitor-resistor-

capacitor (C-R-C) network

•

Greater than 40dB attenuation at 1GHz

•

+

8kV ESD protection on each channel

(IEC 61000-4-2 Level 4, contact discharge)

•

+

15kV ESD protection on each channel (HBM)

•

Supports AC signals—ideal for audio applications

•

Chip Scale Package features extremely low

lead inductance for optimum filter and ESD

performance

•

5-bump, 0.930mm X 1.410mm footprint

Chip Scale Package (CSP)

•

Lead-free RoHS compliant

Applications

•

EMI filtering and ESD protection for headset

microphone ports

•

Wireless handsets

•

Handheld PCs / PDAs

•

MP3 players

•

Digital camcorders

•

Notebooks

•

Desktop PCs

Product Description

The

CM1412

is

a

dual,

low-pass

filter

array

integrating two pi-style filters (C-R-C) that reduce

EMI/RFI emissions while providing ESD protection.

This part is custom-designed to interface with a

microphone port on a cellular telephone or similar

device. Each high quality filter provides more than

35dB attenuation in the 800 to 2700 MHz range.

These pi-style filters support bidirectional filtering that

control EMI both to and from a microphone element.

They also support AC signals, enabling audio signals

to pass through without distortion.

In addition, the CM1412 provides a very high level of

protection for sensitive electronic components that

may be subjected to electrostatic discharge (ESD).

the maximum requirement of the IEC 61000-4-2

international

standard.

Using

the

MIL-STD-883

(Method 3015) specification for Human Body Model

(HBM) ESD, the device provides protection for

The CM1412 is particularly well suited for portable

electronics (e.g., cellular telephones, PDAs, notebook

computers) because of its small package format and

low weight. The CM1412 incorporates OptiGuard

™

coating which results in improved reliability at

assembly and is available in a space-saving, low-

profile Chip Scale Package with lead-free finishing.