CM1423 Datasheet, PDF (1/14 Pages) California Micro Devices Corp – Secure Digital (SD) Card EMI Filter Array with ESD Protection

Secure Digital (SD) Card EMI Filter
Array with ESD Protection
CM1423
Features
• Provides EMI filtering and ESD protection for an
SD port on a mobile device
• Six channels of EMI filtering with ESD protection
• Four channels of ESD protection
• ±15kV ESD protection on all I/O pins (IEC 61000-
4-2, contact discharge)
• ±30kV ESD protection (HBM)
• Better than 25dB of attenuation at 1GHz for
12pF-100Ω -12pF filter configuration
• Integrates 34 components into small form factor
CSP solution
• 20-bump, 4.000mm x 1.458mm footprint
Chip Scale Package
• Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
• Available with OptiGuard™ coating for improved
reliability at assembly
• RoHS compliant (lead-free) finishing
Applications
• Secure Digital (SD) card data lines in mobile
handsets
• SD card interface protection for other mobile
electronics such as MP3 players, PDAs and
digital cameras
• I/O port protection for mobile handsets, notebook
computers, PDAs etc.
• EMI filtering for data ports in cell phones, PDAs
or notebook computers.
Product Description
The CM1423 is an EMI filter array with ESD
protection, which integrates six Pi- filters (C-R-C) and
four channels of ESD protection. The CM1423’s
filters have component values of 12pF-100Ω-12pF.
The part includes ESD protection diodes on every
pin, which provide a very high level of protection for
sensitive electronic components that may be
subjected to electrostatic discharge (ESD). All the
ESD diodes safely dissipate ESD strikes of ±15kV,
beyond 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 pins are protected for contact
discharges at greater than ±30kV.
This device is particularly well-suited for portable
electronics (e.g. mobile handsets, PDAs, notebook
computers) because of its small package and easy-
to-use pin assignments. In particular, the CM1423 is
ideal for EMI filtering and protecting data lines from
ESD for the Secure Digital (SD) Card interface slot in
mobile handsets. The CM1423 is an all-inclusive
solution for the SD card interface since its EMI filters
provide the proper cut-off frequency to attenuate
unwanted signals.
The CM1423 is manufactured in a space-saving, low-
profile, chip-scale package, and is optionally
available with OptiGuard™ coating for improved
reliability. It is available with RoHS compliant lead-
free finishing.
©2010 SCILLC. All rights reserved.
April 2010 Rev. 3
Publication Order Number:
CM1423/D