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PRELIMINARY CM1485 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
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-10016pF per channel. The CM1485 has a cut-off frequency 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 MILSTD-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, notebook computers) 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.
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
Electrical Schematic
100 FILTER+ESDn* 16pF FILTER+ESDn*
R
16pF
C
GND
C
1 of 2 EMI/RFI + ESD Channels
* See Package/Pinout Diagram for expanded pin information.
(c) 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
PRELIMINARY CM1485
PACKAGE / PINOUT DIAGRAMS
TOP VIEW
CH1
1
6
CH2
N85
GND
2
5
GND
CH1
3
4
CH2
Notes: 1) These drawings are not to scale.
6-lead SOT-563
PIN DESCRIPTIONS
NAME 1 2 3 4 5 6 FILTER1 GND FILTER1 FILTER2 GND FILTER2 DESCRIPTION Filter + ESD Channel 1 Ground Filter + ESD Channel 1 Filter + ESD Channel 2 Ground Filter + ESD Channel 2
Ordering Information
PART NUMBERING INFORMATION
Lead-free Finish Pins 6 Package SOT-563 Ordering Part Number1 CM1485-02SE Part Marking N85
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
(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
PRELIMINARY CM1485
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER Storage Temperature Range DC Power per Resistor DC Package Power Rating RATING -65 to +150 100 0.15 UNITS C mW W
STANDARD OPERATING CONDITIONS
PARAMETER Operating Temperature Range RATING -40 to +85 UNITS C
ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE1)
SYMBOL R C ILEAK VBR VESD PARAMETER Resistance Capacitance C Diode Leakage Current (reverse bias) Breakdown Voltage Positive Clamp In-system ESD Withstand Voltage a) Human Body Model, MIL-STD-883, Method 3015 b) Contact Discharge per IEC 61000-42 Level 4 Dynamic Resistance Positive Negative Cut-off Frequency ZSOURCE=50, ZLOAD=50 Absolute Attenuation @ 1GHz from 0dB Level 6GHz from 0dB Level ZSOURCE = 50, Z LOAD = 50, DC Bias = 0V; Notes 1, 4 and 5 ZSOURCE = 50, Z LOAD = 50, DC Bias = 0V; Notes 1, 4 and 5 At 2.5VDC Reverse Bias, 1MHz, 30mVAC VDIODE=+3.0V ILOAD = 1mA Notes 2 and 3 30 15 kV kV 6.0 7.0 CONDITIONS MIN 90 TYP 100 16 1.0 MAX 110 UNITS pF A V
RDYN
2.3 0.9 125 35 30
MHz dB dB
fC
A1GHz
A800MHz - Absolute Attenuation @ 800MHz to
6GHz
Note 1: Note 2: Note 3: Note 4: Note 5:
TA=25C unless otherwise specified. ESD applied to input and output pins with respect to GND, one at a time. These parameters are guaranteed by design and characterization. Attenuation / RF curves characterized by a network analyzer using microprobes. These parameters are NOT guaranteed by design, characterization and production.
(c) 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
PRELIMINARY CM1485
Performance Information
Typical Filter Performance (TA=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)
(c) 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
PRELIMINARY CM1485
Performance Information (cont'd)
Typical Diode Capacitance vs. Input Voltage
Capacitance (Normalized)
DC Voltage
Figure 3. Filter Capacitance vs. Input Voltage (normalized to capacitance at 2.5VDC and 25C)
(c) 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
PRELIMINARY CM1485
Mechanical Details
SOT-563 Mechanical Specifications The CM1485 is supplied in a 6-pin SOT-563 package. Dimensions are presented below. Mechanical Package Diagrams
TOP VIEW
PACKAGE DIMENSIONS
Package Leads Dim. A b c D E E1 e e1 L # per tape and reel Millimeters Min 0.50 0.17 0.08 Nom 0.55 0.22 0.13 1.60 BSC 1.60 BSC 1.20 BSC 0.50 BSC 1.00 BSC 0.20 BSC 5000 pieces Max 0.60 0.27 0.18 Min 0.020 0.007 0.003 SOT-563 6 Inches Nom 0.022 0.009 0.005 Max 0.024 0.011 0.007
2X
0.20
D e1
6 5 4
0.20
C A-B 2X
D
E1
CD 1 2 3
E
0.063 BSC 0.063 BSC 0.047 BSC 0.020 BSC 0.040 BSC 0.008 BSC
Pin 1 Marking
e
b
0.20
c
2X
SIDE VIEW
A
0.10
C
C
SEATING PLANE
Controlling dimension: millimeters
END VIEW c L
Package Dimensions for SOT-563.
(c) 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

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