CM1410
4 Channel Headset EMI Filter with ESD Protection
Features
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Functionally and pin compatible with CSPEMI200A
device
Pi-style EMI filters in a capacitor-resistor-capacitor
(C-R-C) network
Four channels of EMI filtering with ESD protection
Includes 1 channel of ESD-only protection
Greater than 30dB 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
11-bump, 2.046mm X 1.436mm footprint
Chip Scale Package (CSP)
Optiguard
™
coated for improved reliability at
assembly
Lead-free version available
Product Description
The CM1410 is a quad low-pass filter array integrating
four pi-style filters (C-R-C) that reduce EMI/RFI emis-
sions while at the same time providing ESD protection.
This device is custom-designed to interface with the
headset port on a cellular telephone, and contains 3
different filter values. Each high quality filter provides
more than 20dB attenuation in the 800-2700 MHz
range. These pi-style filters support bidirectional filter-
ing, controlling EMI both to and from the microphone
and speaker elements. They also support bipolar sig-
nals, enabling audio signals to pass through without
distortion.
In addition, the CM1410 provides a very high level of
protection for sensitive electronic components that may
be subject to electrostatic discharge (ESD). The
CM1410 can safely dissipate ESD strikes of
+
8kV, the
maximum requirement of the IEC 61000-4-2 interna-
tional 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 CM1410 also includes a sin-
gle channel of ESD-only protection.
The CM1410 is particularly well suited for portable
electronics (e.g., cellular telephones, PDAs, notebook
computers) because of its small package format and
low weight.
The CM1410 incorporates
Optiguard
™
coating which
results in improved reliability at assembly.The CM1410
is available in a space-saving, low-profile Chip Scale
Package with optional lead-free finishing.
Applications
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EMI filtering and ESD protection for audio ports
Wireless Handsets
Handheld PCs / PDAs
MP3 Players
Digital Camcorders
Notebooks
Desktop PCs
Electrical Schematic
MIC_IN1
B1
100Ω
C1
MIC_OUT1
SPKR_IN1
C3
100pF
10Ω
A3
SPKR_OUT1
100pF
47pF
47pF
MIC_IN2
A2
68Ω
C2
MIC_OUT2
SPKR_IN2
C4
100pF
10Ω
A4
SPKR_OUT2
100pF
GND
GND
B3
B4
47pF
47pF
B2
ESD1
©
2005 California Micro Devices Corp. All rights reserved.
09/15/05
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
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