CM1421
4-Channel LCD EMI Filter
Array and ESD Protection
Array
Product Description
The CM1421 is a multichannel array consisting of four low−pass
filters with integrated ESD protection and four ESD−only protection
channels designed to reduce EMI/RFI emissions on LCD data lines in
mobile handsets. The CM1421 has component values of 15 pF
−
100
W
−
15 pF. These devices include 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 diodes connected to the filter ports safely dissipate
ESD strikes of
±15
kV, exceeding 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
±30
kV.
This device is particularly well−suited for portable electronics (e.g.
wireless handsets, PDAs, notebook computers) because of its small
package and easy−to−use pin assignments. In particular, the CM1421
is ideal for EMI filtering and protecting data lines from ESD for the
LCD display in clamshell handsets.
The CM1421 incorporates
OptiGuardt
coating which results in
improved reliability. The CM1421 is available in space−saving,
low−profile chip scale packages with RoHS−compliant lead−free
finishing.
Features
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WLCSP15
CP SUFFIX
CASE 567BS
MARKING DIAGRAM
N213 MG
G
N213
= CM1421−03CP
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
CM1421−03CP
Package
CSP−15
(Pb−Free)
Shipping
†
3500/Tape & Reel
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Functionally and Pin−Compatible with CSPEMI607 Device
Four Channels of Combined EMI/RFI Filtering + ESD Protection
Four Additional Channels of ESD−Only Protection
Better Than 30 dB Attenuation (Typical) at 1 GHz
±15
kV ESD Protection on All Channels
(IEC 61000−4−2 Level 4, Contact Discharge)
±30
kV ESD Protection on All Channels (HBM)
Chip Scale Package Features Extremely Low Lead Inductance for
Optimum Filter and ESD Performance
15−Bump, 2.960 mm X 1.330 mm Footprint
OptiGuardt
Coated for Improved Reliability
These Devices are Pb−Free and are RoHS Compliant
LCD Data Lines in Mobile Handsets
EMI Filtering and ESD Protection for Both Data and I/O Ports
Mobile Handsets
Handheld PCs / PDAs
Notebook Computers
†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.
Applications
©
Semiconductor Components Industries, LLC, 2011
March, 2011
−
Rev. 3
1
Publication Order Number:
CM1421/D
CM1421
BLOCK DIAGRAM
100
W
FILTER + ESD_n*
15 pF
15 pF
ESD_n*
(Pins A1,A6,
C1,C6)
15 pF
FILTER + ESD_n*
(Pins A2−A5)
GND
(Pins B1−B3)
1 of 4 EMI/RFI + ESD Channels.
*See Package/Pinout Diagrams for expanded pin information.
1 of 4 ESD−only Channels
Table 1. PIN DESCRIPTIONS
15−bump CSP Package
Pin
A1
A2
A3
A4
A5
A6
B1−B3
C1
C2
C3
C4
C5
C6
Name
ESD_1
FILTER + ESD_1
FILTER + ESD_2
FILTER + ESD_3
FILTER + ESD_4
ESD_2
GND
ESD_3
FILTER + ESD_1
FILTER + ESD_2
FILTER + ESD_3
FILTER + ESD_4
ESD_4
Description
ESD Channel 1
Filter + ESD Channel 1
Filter + ESD Channel 2
Filter + ESD Channel 3
Filter + ESD Channel 4
ESD Channel 2
Device Ground
ESD Channel 3
Filter + ESD Channel 1
Filter + ESD Channel 2
Filter + ESD Channel 3
Filter + ESD Channel 4
ESD Channel 4
C
B
Orientation
Marking
(See Note)
A
PACKAGE / PINOUT DIAGRAMS
Top View
(Bumps Down View)
+
1
2
3
4
5
6
N213
Bottom View
(Bumps Up View)
C1
B1
Orientation
Marking
A1
CM1421−03
CSP Package
Note: Lead−free devices are specified by using a “+” character
for the top side orientation mark.
A1
A2
A3
C2
C3
B2
A4
A5
C4
C5
B3
A6
C6
SPECIFICATIONS
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter
Storage Temperature Range
DC Power per Resistor
DC Package Power Rating
Rating
–65 to +150
100
500
Units
°C
mW
mW
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
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CM1421
Table 3. STANDARD OPERATING CONDITIONS
Parameter
Operating Temperature Range
Rating
–40 to +85
Units
°C
Table 4. ELECTRICAL OPERATING CHARACTERISTICS
(Note 1)
Symbol
R
C
V
DIODE
I
LEAK
V
SIG
Resistance
Capacitance
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 Transients
Negative Transients
Cut−off Frequency
Z
SOURCE
= 50
W,
Z
LOAD
= 50
W
R = 100
W,
C = 15 pF
At 2.5 V DC
I
DIODE
= 10
mA
V
DIODE
= +3.3 V
I
LOAD
= 10 mA
5.6
−1.5
±30
±15
V
Parameter
Conditions
Min
80
12
Typ
100
15
6.0
100
6.8
–0.8
300
9.0
−0.4
Max
120
18
Units
W
pF
V
nA
V
V
ESD
(Note 2)
kV
R
DYN
1.6
0.44
120
f
C
MHz
1. T
A
= 25°C unless otherwise specified.
2. ESD applied to input and output pins with respect to GND, one at a time.
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