2 Channel Headset Speaker EMI Filter

with ESD Protection

CSPEMI201AG

©2010 SCILLC. All rights reserved.

Publication Order Number:

April 2010 Rev. 3

CSPEMI201AG/D

Features

•

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 in each channel (HBM)

•

Supports AC signals—ideal for audio applications

•

Extremely low lead inductance for optimum filter

and ESD performance

•

5-bump, 0.930mm X 1.410mm footprint

Chip Scale Package (CSP)

•

RoHS compliant (lead-free) finishing

Applications

•

EMI filtering and ESD protection for headset

speaker ports

•

Wireless Handsets

•

Handheld PCs / PDAs

•

MP3 Players

•

Digital Camcorders

•

Notebooks

•

Desktop PCs

Product Description

The CSPEMI201AG is a dual low-pass filter array

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

EMI/RFI emissions while at the same time providing

ESD protection. This part is custom-designed to

interface with a speaker port on a cellular telephone

or similar device. Each high quality filter provides

more than 35dB attenuation in the 800-2700 MHz

range. These pi-style filters support bidirectional

filtering, controlling EMI both to and from a speaker

element. They also support bipolar signals with a

cutoff frequency of 31MHz, enabling audio signals to

pass through without distortion.

In addition, the CSPEMI201AG provides a very high

level of protection for sensitive electronic components

that may be subjected to electrostatic discharge

(ESD).

The CSPEMI201AG can 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 CSPEMI201AG is particularly well-suited for

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

notebook computers) because of its small package

and low weight. The CSPEMI201AG is available in a

space-saving, low-profile Chip Scale Package with

RoHS compliant lead-free finishing.