© Semiconductor Components Industries, LLC, 2013
May, 2013 − Rev. 6
1 Publication Order Number:
CM1457/D
CM1457
4-, 6-, 8-Channel EMI Filter
Array with ESD Protection
Description
The CM1457 is an inductor-based (L-C) EMI filter array with ESD
protection, which integrates four, six, or eight filters in a CSP form
factor with 0.40 mm pitch. Each EMI filter channel of the CM1457 is
implemented with the component value of 6 pF − 35 nH – 4.7 pF −
35 nH – 1.8 pF. The cut-off frequency at −3 dB attenuation is
300 MHz and can be used in applications where the data rates are as
high as 160 Mbps, while providing greater than −35 dB attenuation
over the 800 MHz to 2.7 GHz frequency range. The parts include ESD
diodes on every I/O pin and provide a high level of protection against
electrostatic discharge (ESD). The ESD protection diodes connected
to the external filter ports are designed and characterized to safely
dissipate ESD strikes of ±15 kV, which is beyond the maximum
requirement of the IEC61000−4−2 international standard.
This device is particularly well suited for wireless handsets, mobile
LCD modules and PDAs because of its small package format and
easy-to-use pin assignments. In particular, the CM1457 is ideal for
EMI filtering and protecting data and control lines for the LCD display
and camera interface in mobile handsets.
The CM1457 incorporates OptiGuard which results in improved
reliability at assembly. It is manufactured with a 0.40 mm pitch and
0.25 mm CSP solder ball to provide up to 28% board space savings vs.
competing CSP devices with 0.50 mm pitch and 0.30 mm CSP solder
ball.
Features
• Four, Six or Eight Channels of EMI Filtering
• ±15 kV ESD Protection (IEC 61000−4−2, Contact Discharge) at
External Pins
• Greater than −40 dB of Attenuation at 1 GHz
MIL−STD−883 International ESD Standard
• Chip Scale Package (CSP) with 0.40 mm Pitch and 0.25 mm CSP
Solder Ball which Features Extremely Low Parasitic Inductance
for Optimum Filter and ESD Performance
• OptiGuard Coating for Improved Reliability at Assembly
• These Devices are Pb−Free and are RoHS Compliant
Applications
• LCD and Camera Data Lines in Mobile Handsets
• 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
• LCD and Camera Modules
MARKING DIAGRAM
Device Package Shipping
†
ORDERING INFORMATION
http://onsemi.com
CM1457−04CP CSP−10
(Pb−Free)
3500/Tape & Reel
N57 = CM1457−04CP
N57 = CM1457−06CP
N57 = CM1457−08CP
w/yww/yyww = date code
N57 yww
CM1457−06CP CSP−15
(Pb−Free)
3500/Tape & Reel
CM1457−06
15−Bump CSP
N57 yyww
CM1457−08
20−Bump CSP
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
WLCSP15
CP SUFFIX
CASE 567BR
WLCSP20
CP SUFFIX
CASE 567BV
BLOCK DIAGRAM
6 pF
35 nH
Cn*
(External
Pins)
An*
(Internal
Pins)
GND
(Pins
B1−B4)
CM1457−08CP CSP−20
(Pb−Free)
3500/Tape & Reel
N57 w
CM1457−04
10−Bump CSP
WLCSP10
CP SUFFIX
CASE 567BJ
1.8 pF
4.7 pF
35 nH
