CM1454 Datasheet, PDF (1/10 Pages) ON Semiconductor – Data Port EMI Filter Array with ESD Protection

Data Port EMI Filter Array
with ESD Protection
CM1454
Features
• Optiguard™ coated for improved reliability
• Eight channels of EMI filtering
• Three C-L-C filters with ESD protection for stereo
speaker port
• Five C-R-C filters with ESD protection for
microphone and data ports
• +15kV ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
• +30kV ESD protection on each channel (HBM)
• Chip Scale Package (CSP) features extremely
low parasitic inductance for optimum filter and
ESD performance
• 20 bump, 3.960mm x 1.586mm footprint CSP
• RoHS compliant (lead-free)
Applications
• Combination I/O data port that has I/Os for data,
microphone and speaker
• I/O port protection for mobile handsets, notebook
computers, PDAs etc
•
"EMI filtering for data ports in cell phones,
PDAs or notebook computers
• Wireless Handsets
• Handheld PCs / PDAs
Product Description
The CM1454 is an EMI filter array with ESD
protection in a CSP form factor for the data port of a
mobile handset. The CM1454-08 is configured in an
8 channel format and combines both resistor-
capacitor (R-C) and inductor-capacitor (L-C) filters in
the chip. There are five C-R-C filters with component
values of 30pF-100 -30pF which are used for the
microphone and data ports. There are also three C-
L-C filters with values of 80pF-3nH-80pF which are
designed for the stereo speaker port.
The CM1454's C-RC filters have a cut-off frequency
of 60MHz and an attenuation of better than 35dB
over the 800MHz to 2.7GHz frequency range. The
C-L-C filters have a cut-off frequency of 21MHz with
an attenuation of 40dB at 1Ghz. The parts integrate
ESD protection diodes on every pin that provide a
very high level of protection for sensitive electronic
components against possible electrostatic discharge
(ESD). The ESD protection diodes connected to the
filter ports are designed and characterized to safely
dissipate ESD strikes of ±15kV, which is beyond the
Level 4 requirement of the IEC61000-4-2
international standard. In accordance with MIL-STD-
883 (Method 3015) specification for Human Body
Model (HBM) ESD, the pins are also protected for
contact discharges at greater than ±30kV.
The CM1454 incorporates OptiGuard™ which results
in improved reliability at assembly. The CM1454 is
available in a space saving, low profile Chip Scale
Package with, RoHS compliant, lead-free finishing.
©2010 SCILLC. All rights reserved.
April 2010 Rev. 2
Publication Order Number:
CM1454/D