LCD and Camera EMI Filter Array
with ESD Protection
CM1450
Features
•
•
•
•
•
•
•
•
•
High bandwidth, high RF rejection filter array
Six and eight channels of EMI filtering
Utilizes
Praetorian®
inductor-based design
technology for true L-C filter implementation
OptiGuard™
coating for improved reliability
±15kV
ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
±30kV
ESD protection on each channel (HBM)
Better than 40dB of attenuation at 1GHz
Maintains signal integrity for signals that have a
risetime and falltime as fast as 2ns
Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
15-bump, 3.006mm x 1.376mm footprint
Chip Scale Package (CM1450-06CS/CP)
20-bump, 4.006mm x 1.376mm footprint
Chip Scale Package (CM1450-08CS/CP)
RoHS-compliant, lead-free finishing
Product Description
The CM1450 comprises a family of inductor-capacitor
(L-C) based EMI filter arrays with integrated ESD
protection in a CSP form factor. The CM1450-06 and
CM1450-08 are configured in 6 and 8 channel
formats respectively. Each EMI filter channel of the
CM1450 is implemented as a 5-pole L-C filter where
the component values are 14pF-17nH-14pF-17nF-
14pF. The CM1450's roll-off frequency at -10dB
attenuation is 400MHz and can be used in
applications where the data rates are as high as
160Mbps while providing greater than 35dB over the
800MHz to 2.7GHz frequency range. The parts
integrate 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). The ESD protection
diodes connected to the filter ports safely dissipate
ESD strikes of
±15kV,
exceeding the Level 4
requirement of the IEC61000-4-2 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. wireless handsets, PDAs) because
of its small package format and easy-to-use pin
assignments. In particular, the CM1450 is ideal for
EMI filtering and protecting data and control lines for
the LCD display and camera interface in wireless
handsets while maintaining the integrity of signals
that have rise/fall times as fast as 2ns.
The CM1450 incorporates
OptiGuard
™
which results
in improved reliability at assembly. The CM1450 is
available in a space-saving, low-profile Chip Scale
Package with lead-free finishing.
•
•
•
Applications
•
•
•
•
•
•
LCD and Camera data lines in mobile handsets
I/O port protection for mobile handsets, notebook
computers, PDAs, etc.
EMI filtering for data phones in cell phones,
PDAs or notebook computers
Wireless handsets / cell phones
Handheld PCs/PDAs
LCD and camera modules
©2010 SCILLC. All rights reserved.
April 2010 Rev. 2
Publication Order Number:
CM1450/D
CM1450
ELECTRICAL OPERATING CHARACTERISTICS
(NOTE 1)
SYMBOL
L
TOT
L
1
, L
2
R
DC IN-OUT
C
TOT
C
1
, C
2
, C
3
PARAMETER
Total Channel Inductance (L
1
+ L
2
)
Inductance
DC Channel Resistance
Total Channel Capacitance (C
1
+ C
2
+ C
3
)
Capacitance
Cut-off Frequency
Z
SOURCE
=50Ω, Z
LOAD
=50Ω
Roll-off Frequency at -10dB Attenuation
Z
SOURCE
=50Ω, Z
LOAD
=50Ω
Diode Standoff Voltage
Diode Leakage Current (reverse bias)
Signal Voltage
Positive Clamp
Negative Clamp
In-system ESD Withstand Voltage
a) Human Body Model, MIL-STD-883,
Method 3015
b) Contact Discharge per IEC 61000-4-2
Level 4
Dynamic Resistance
Positive
Negative
I
DIODE
=10μA
V
DIODE
=+3.3V
I
LOAD
= 10mA
5.6
-1.5
Note 2
±30
±15
kV
kV
6.8
-0.8
9.0
-0.4
V
V
At 2.5V DC, 1MHz,
30mV AC, Note 3
At 2.5V DC, 1MHz,
30mV AC, Note 3
33.6
11.2
CONDITIONS
MIN
TYP
34
17
18
42
14
50.4
16.8
MAX
UNITS
nH
nH
Ω
pF
pF
f
f
C
137
MHz
RO
400
6.0
0.1
1.0
MHz
V
μA
V
DIODE
I
LEAK
V
SIG
V
ESD
R
DYN
2.30
0.90
Ω
Ω
Note 1: T
A
=25
°
C unless otherwise specified.
Note 2: ESD applied to input and output pins with respect to GND, one at a time.
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