2 Channel Headset Microphone
EMI Filter with ESD Protection
CSPEMI202AG
Features
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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 bipolar 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)
RoHS compliant (lead-free) finishing
Product Description
The CSPEMI202AG 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 microphone 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
microphone element. They also support bipolar
signals, enabling audio signals to pass through
without distortion.
In addition, the CSPEMI202AG provides a very high
level of protection for sensitive electronic components
that may be subjected to electrostatic discharge
(ESD). The diodes 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 CSPEMI202AG is particularly well-suited for
portable electronics (e.g., cellular telephones, PDAs,
notebook computers) because of its small package
format and low weight. The CSPEMI202AG is
available in a space-saving, low-profile Chip Scale
Package with RoHS compliant lead-free finishing.
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Applications
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EMI filtering and ESD protection for headset
microphone ports
Wireless Handsets
Handheld PCs / PDAs
MP3 Players
Digital Camcorders
Notebooks
Desktop PCs
©2010 SCILLC. All rights reserved.
April 2010 Rev. 3
Publication Order Number:
CSPEMI202AG/D
ONSEMI [ ON SEMICONDUCTOR ]
