Praetorian® L-C EMI Filter with ESD
Protection for Headset Speaker Apps
CM1483
©2010 SCILLC. All rights reserved. Publication Order Number:
May 2010 – Rev. 2 CM1483/D
Features
• 2 channels of EMI filtering
• ±8kV ESD protection (IEC 61000-4-2, contact
discharge)
• ±15kV ESD protection (HBM)
• Greater than -40dB of attenuation at 1GHz
• TDFN-08 package
Applications
• Headset Speaker port 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
Product Description
The CM1483 is an L-C EMI filter array with ESD
protection, which integrates two Pi-filters (C-L-C) for
the headset speaker. The CM1483 has component
values of 100pF-3nH-100pF. The parts include ESD
protection diodes on all input/output pins, 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 ±8kV, 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
±15kV.
This device is particularly well suited for portable
electronics (e.g. mobile handsets, PDAs, notebook
computers) because of its small package format
and easy-to-use pin assignments. In particular, the
CM1483 is ideal for EMI filtering and protecting
speaker output lines from ESD for the headset
speaker in mobile handsets. Most speakers have
impedance of 8Ω and in order to maximize the
power output, the resistance of an EMI filter needs
to be as low as possible and the CM1483
addresses this by having a C-L-C based EMI filter
where the inductor has less than 1Ω of resistance.
The CM1483 is available in a small, low-profile
(2mm x 2mm) 8-lead TDFN package in a lead-free
finish.
CM1483
Rev. 2 | Page 2 of 7 | www.onsemi.com
CM1483
Rev. 2 | Page 3 of 7 | www.onsemi.com
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1 Filter #1 Filter #1
2 NC No connect
3 NC No connect
4 Filter #2 Filter #2
5 Filter #2 Filter #2
6 NC No connect
7 NC No connect
8 Filter #1 Filter #1
DAP GND Ground
Ordering Information
PART NUMBERING INFORMATION
Lead-free Finish
Pins
Package
Ordering Part Number1
Part Marking
8 TDFN CM1483 -02DE 83E
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
CM1483
Rev. 2 | Page 4 of 7 | www.onsemi.com
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER RATING
UNITS
Storage Temperature Range –65 to +150 °C
DC current per inductor 30 mA
DC package power rating 0.5 W
STANDARD OPERATING CONDITIONS
PARAMETER RATING
UNITS
Operating Temperature Range –40 to +85 °C
ELECTRICAL OPERATING CHARACTERISTICS (NOTE 1)
SYMBOL
PARAMETER CONDITIONS MIN
TYP
MAX
UNITS
L Inductance 3.0 nH
R DC Channel Resistance 0.75 1
Ω
CTOT Total Channel Capacitance 2.5V DC; 1MHz, 30mV AC 160 200 240 pF
C Capacitance C 2.5V DC; 1MHz, 30mV AC 100 pF
VIN = +5V 0.1 1.0 μA
ILEAK Diode Leakage Current
VIN =-5V -1.0 -0.1 μA
VSIG Signal Clamp Voltage
Positive Clamp
Negative Clamp
ILOAD = 10mA
ILOAD = –10mA
5
–15
7
–10
15
–5
V
V
VESD In-system ESD Withstand Voltage
Human Body Model, MIL-STD-883,
Method 3015
Contact Discharge per IEC 61000-
4-2 Level 4
Notes 2 & 3
±15
±8
kV
kV
fC Cut-off frequency
ZSOURCE = 50Ω, ZLOAD = 50Ω
L = 3nH, C = 100pF 31 MHz
Note 1: TA = 25°C unless otherwise specified.
Note 2: ESD applied to input and output pins with respect to GND, one at a time.
CM1483
Rev. 2 | Page 5 of 7 | www.onsemi.com
Performance Information
Typical Filter Performance (nominal conditions unless specified otherwise, 50 ohm environment)
Figure 1. Insertion Loss vs. Frequency (Filter #1 to GND)
Figure 2. Insertion Loss vs. Frequency (Filter #2 to GND)
CM1483
Rev. 2 | Page 6 of 7 | www.onsemi.com
Mechanical Details
TDFN-08 Mechanical Specifications, 0.5mm
The CM1483 is supplied in an 8-lead 0.5mm TDFN package. Dimensions are presented below.
For complete information on the TDFN-08, see the California Micro Devices TDFN Package Information
document.
PACKAGE DIMENSIONS
Package
TDFN
JEDEC
No.
MO-229 (Var. VCCD-3)*
Leads
8
Millimeters
Inches
Dim.
Min
Nom
Max
Min
Nom
Max
A
0.70 0.75 0.80 0.028 0.030 0.031
A3
0.20 REF 0.008 REF
b
0.20 0.25 0.30 0.008 0.010 0.012
D
1.90 2.00 2.10 0.075 0.079 0.083
D2
1.50 1.60 1.70 0.059 0.063 0.067
E
1.90 2.00 2.10 0.075 0.079 0.083
E2
0.80 0.90 1.00 0.031 0.035 0.039
e
0.50 BSC 0.020 BSC
K
0.20 0.008
L
0.20 0.30 0.40 0.008 0.012 0.016
# per
tape and
reel
3000 pieces
Controlling dimension: millimeters
*This package is compliant with JEDEC standard MO-229,
variation VCCD-3 with exception of the D2 and E2 dimensions
as called out in the table above and the r1 dimension which is
not specified in the MO-229 standard.
Package Dimensions for 8-Lead, 0.5mm pitch
TDFN package
CM1483
Rev. 2 | Page 7 of 7 | www.onsemi.com
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further
notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC
assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special,
consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and
actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts.
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