CM1421
4-Channel LCD EMI Filter Array plus
4-Channel ESD Protection Array
Features
•
•
•
•
•
•
•
Functionally and pin compatible with CMD’s
CSPEMI607
Four channels of combined EMI/RFI filtering plus
ESD protection
Four additional channels of ESD-only protection
Better than 30dB attenuation (typical) at 1 GHz
±15kV
ESD protection on all channels
(IEC 61000-4-2 Level 4, contact discharge)
±30kV
ESD protection on all channels (HBM)
Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
15-bump, 2.960mm X 1.330mm footprint
Chip Scale Package (CSP)
Optiguard
™
coated for improved reliability
Lead-free version available
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 15pF-100Ω-
15pF. These devices include ESD protection diodes on
every pin, which provide a very high level of protection
for sensitive electronic components that may be sub-
jected to electrostatic discharge (ESD). The ESD
diodes connected to the filter ports are designed and
characterized to 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 dis-
charges at greater than ±30kV.
This device is particularly well suited for portable elec-
tronics (e.g. wireless handsets, PDAs, notebook com-
puters) because of its small package format 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 Optiguard
™
coating which
results in improved reliability. The CM1421 is available
in space-saving, low-profile chip-scale packages with
optional lead-free finishing.
•
•
•
Applications
•
•
•
•
•
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
Electrical Schematic
100Ω
FILTER+ESDn*
15pF
15pF
FILTER+ESDn*
ESDn*
15pF
GND
(Pins B1-B3)
1 of 4 EMI/RFI + ESD Channels.
1 of 4 ESD-only Channels
* See Package/Pinout Diagram for expanded pin information
© 2004 California Micro Devices Corp. All rights reserved.
04/27/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
1
CM1421
PACKAGE / PINOUT DIAGRAMS
TOP VIEW
(Bumps Down View)
Orientation
Marking
(see note 2)
BOTTOM VIEW
(Bumps Up View)
1
A
B
C
2
3
4
5
6
ESD_3
FILTER+ESD_2
FILTER+ESD_4
C1
C2
FILTER+ESD_1
C3
GND
C4
FILTER+ESD_3
C5
GND
C6
ESD_4
N213
Orientation
Marking
GND
ESD_1
B1
A2
FILTER+ESD_1
B2
A4
FILTER+ESD_3
B3
A6
ESD_2
FILTER+ESD_2
FILTER+ESD_4
A1
A1
A3
A5
Notes:
CSP Package
1) These drawings are not to scale.
2) Lead-free devices are specified by using a "+" character for the top side orientation mark.
CM1421-03
PIN DESCRIPTIONS
PIN(s)
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
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Ordering Part
Pins
15
Package
CSP
Number
1
CM1421-03CS
Part Marking
N213
Lead-free Finish
Ordering Part
Number
1
CM1421-03CP
Part Marking
2
N213
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Note 2: Lead-free devices are specified by using a "+" character for the top side orientation mark.
© 2004 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
04/27/04
CM1421
Specifications
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
STANDARD OPERATING CONDITIONS
PARAMETER
Operating Temperature Range
RATING
-40 to +85
UNITS
°C
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE1)
SYMBOL
R
C
V
DIODE
I
LEAK
V
SIG
PARAMETER
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
Clamping Voltage during ESD Discharge
MIL-STD-883 (Method 3015), 8kV
Positive Transients
Negative Transients
Cut-off Frequency
Z
SOURCE
=50Ω, Z
LOAD
=50Ω
At 2.5V DC
I
DIODE
=10µA
V
DIODE
=3.3V
I
LOAD
= 10mA
5.6
-1.5
Notes 2,4 and 5
6.8
-0.8
9.0
-0.4
V
V
kV
kV
CONDITIONS
MIN
80
12
5.5
100
TYP
100
15
MAX
120
18
UNITS
Ω
pF
V
nA
V
ESD
±
30
±
15
Notes 2,3,4 and 5
+12
-7
R=100Ω , C=15pF
120
V
CL
V
V
MHz
f
C
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.
Note 3: Clamping voltage is measured at the opposite side of the EMI filter to the ESD pin. For example, if ESD is applied to Pin A2,
then clamping voltage is measured at Pin C2.
Note 4: Unused pins are left open
Note 5: These parameters are guaranteed by design and characterization.
© 2004 California Micro Devices Corp. All rights reserved.
04/27/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
3
CM1421
Performance Information (cont’d)
Typical Filter Performance (T
A
=25°C, DC Bias=0V, 50 Ohm Environment)
Figure 3. Insertion Loss VS. Frequency (A3-C3 to GND B2)
Figure 4. Insertion Loss VS. Frequency (A4-C4 to GND B2)
© 2004 California Micro Devices Corp. All rights reserved.
04/27/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
5
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