2006 California Micro Devices Corp. All rights reserved.
05/12/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
1
CM1485
PRELIMINARY
Dual Channel EMI Filter with ESD Protection
Features
Two channels of EMI filtering with integrated ESD
protection
Pi-style EMI filters in a capacitor-resistor-capacitor
(C-R-C) network
15kV ESD protection on each channel
(IEC 61000-4-2 Level 4, contact discharge)
30kV ESD protection on each channel (HBM)
Greater than 30dB attenuation (typical) at 1 GHz
6-lead SOT-563 package
Available 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 ports in cell phones, PDAs or
notebook computers.
Wireless handsets
Handheld PCs/PDAs
LCD and camera modules
Product Description
The CM1485 is a 2 channel pi-style EMI filter array with
ESD protection, housed in a 6-lead SOT-563 package.
The CM1485 has component values of 16pF-100
-
16pF per channel. The CM1485 has a cut-off fre-
quency of 125MHz and can be used in applications
with data rates up to 48Mbps. The parts include ESD
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 safely dissipate ESD strikes of
15kV, well beyond the maximum 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 elec-
tronics (e.g. wireless handsets, PDAs, notebook com-
puters) because of its small package and easy-to-use
pin assignments. In particular, the CM1485 is ideal for
EMI filtering and protecting data and control lines for
the I/O data ports, LCD display and camera interface in
mobile handsets.
The CM1485 is housed in a small, 6-lead SOT-563
package and is available with lead-free finishing.
100
16pF
16pF
FILTER+ESDn*
GND
FILTER+ESDn*
Electrical Schematic
1 of 2 EMI/RFI + ESD Channels
* See Package/Pinout Diagram
for expanded pin information.
R
C
C
2006 California Micro Devices Corp. All rights reserved.
2
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
05/12/06
CM1485
PRELIMINARY
Ordering Information
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
PIN DESCRIPTIONS
NAME
DESCRIPTION
1
FILTER1
Filter + ESD Channel 1
2
GND
Ground
3
FILTER1
Filter + ESD Channel 1
4
FILTER2
Filter + ESD Channel 2
5
GND
Ground
6
FILTER2
Filter + ESD Channel 2
PACKAGE / PINOUT DIAGRAMS
Notes:
1) These drawings are not to scale.
6-lead SOT-563
1
2
6
5
3
4
TOP VIEW
N85
CH1
CH1
GND
CH2
CH2
GND
PART NUMBERING INFORMATION
Pins
Package
Lead-free Finish
Ordering Part Number
1
Part Marking
6
SOT-563
CM1485-02SE
N85
2006 California Micro Devices Corp. All rights reserved.
05/12/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
3
CM1485
PRELIMINARY
Specifications
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: These parameters are guaranteed by design and characterization.
Note 4: Attenuation / RF curves characterized by a network analyzer using microprobes.
Note 5: These parameters are NOT guaranteed by design, characterization and production.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
Storage Temperature Range
-65 to +150
C
DC Power per Resistor
100
mW
DC Package Power Rating
0.15
W
STANDARD OPERATING CONDITIONS
PARAMETER
RATING
UNITS
Operating Temperature Range
-40 to +85
C
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
R
Resistance
90
100
110
C
Capacitance C
At 2.5VDC Reverse Bias, 1MHz,
30mVAC
16
pF
I
LEAK
Diode Leakage Current (reverse bias)
V
DIODE
=
+
3.0V
1.0
A
V
BR
Breakdown Voltage
Positive Clamp
I
LOAD
= 1mA
6.0
7.0
V
V
ESD
In-system ESD Withstand Voltage
a) Human Body Model, MIL-STD-883,
Method 3015
b) Contact Discharge per IEC 61000-4-
2 Level 4
Notes 2 and 3
30
15
kV
kV
R
DYN
Dynamic Resistance
Positive
Negative
2.3
0.9
f
C
Cut-off Frequency
Z
SOURCE
=50
, Z
LOAD
=50
125
MHz
A
1GHz
Absolute Attenuation @ 1GHz from 0dB
Level
Z
SOURCE
= 50
, Z
LOAD
= 50
,
DC Bias = 0V; Notes 1, 4 and 5
35
dB
A
800MHz -
6GHz
Absolute Attenuation @ 800MHz to
6GHz from 0dB Level
Z
SOURCE
= 50
, Z
LOAD
= 50
,
DC Bias = 0V; Notes 1, 4 and 5
30
dB
2006 California Micro Devices Corp. All rights reserved.
4
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
05/12/06
CM1485
PRELIMINARY
Performance Information
Typical Filter Performance (T
A
=25C, DC Bias=0V, 50 Ohm Environment)
Figure 1. Insertion Loss vs. Frequency (FILTER1 Input to GND)
Figure 2. Insertion Loss vs. Frequency (FILTER2 Input to GND)
2006 California Micro Devices Corp. All rights reserved.
05/12/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
5
CM1485
PRELIMINARY
Performance Information (cont'd)
Typical Diode Capacitance vs. Input Voltage
Figure 3. Filter Capacitance vs. Input Voltage
(normalized to capacitance at 2.5VDC and 25C)
C
apacitanc
e
(
Normaliz
ed)
DC Voltage
2006 California Micro Devices Corp. All rights reserved.
6
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
05/12/06
CM1485
PRELIMINARY
Mechanical Details
SOT-563 Mechanical Specifications
The CM1485 is supplied in a 6-pin SOT-563 package.
Dimensions are presented below.
Package Dimensions for SOT-563.
PACKAGE DIMENSIONS
Package
SOT-563
Leads
6
Dim.
Millimeters
Inches
Min
Nom
Max
Min
Nom
Max
A
0.50
0.55
0.60
0.020 0.022 0.024
b
0.17
0.22
0.27
0.007 0.009 0.011
c
0.08
0.13
0.18
0.003 0.005 0.007
D
1.60 BSC
0.063 BSC
E
1.60 BSC
0.063 BSC
E1
1.20 BSC
0.047 BSC
e
0.50 BSC
0.020 BSC
e1
1.00 BSC
0.040 BSC
L
0.20 BSC
0.008 BSC
# per
tape and
reel
5000 pieces
Controlling dimension: millimeters
Mechanical Package Diagrams
TOP VIEW
e1
E1
E
b
A
SIDE VIEW
D
L
END VIEW
c
1
3
SEATING
e
0.20
C
D
1
A-B 2X
2X
2X
0.20
C D
0.10
C
0.20
c
C
PLANE
2
5
6
4
Pin 1
Marking
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