CM1412 データシートの表示（PDF） - ON Semiconductor

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CM1412

2-Channel Headset/Microphone EMI Filter Array with ESD Protection

ON Semiconductor 

2-Channel Headset/Microphone EMI

Filter Array with ESD Protection

CM1412

Features

• Functionally and pin compatible with CMD’s

CSPEMI202A

• OptiGuard™ coated for improved reliability at

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 input pins safely dissipate ESD strikes of +8kV,

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

contact discharges to greater than +15kV.

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.

©2010 SCILLC. All rights reserved.

April 2010 Rev. 3

Publication Order Number:

CM1412/D

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