CM1412 Datasheet, PDF (1/9 Pages) California Micro Devices Corp – 2 Channel Headset Microphone EMI Filter with ESD Protection

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