Document
Filter #1
CM1683
Praetorian) L-C EMI Filter with ESD Protection for Headsets/Speakers
Product Description The CM1683 is an L−C EMI filter array with ESD protection, which
integrates two Pi−filters (C−L−C) for the headset speaker. The CM1683 has component values of 100 pF − 3 nH − 100 pF. 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 ±8 kV, 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 ±15 kV.
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 CM1683 is ideal for EMI filtering and protecting speaker output lines from ESD for the headset speaker in mobile handsets. Most speakers have impedance of 8 W and in order to maximize the power output, the resistance of an EMI filter needs to be as low as possible and the CM1683 addresses this by having a C−L−C based EMI filter where the inductor has less than 1 W of resistance.
Features
• Two Channels of EMI Filtering • ±8 kV ESD Protection (IEC 61000−4−2, Contact Discharge) • ±15 kV ESD Protection (HBM) • Greater than −40 dB of Attenuation at 1 GHz • 8−Lead, 2.00 mm x 2.00 mm, 0.5 mm Pitch CUDFN Package • These Devices are Pb−Free and are RoHS Compliant
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
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Filter #1
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CUDFN8 DE SUFFIX CASE 505AF
ELECTRICAL SCHEMATIC
3 nH
1
8
100 pF L 100 pF
C
C
3 nH
4
5
100 pF L 100 pF
C
C
MARKING DIAGRAM P83
P83 = CM1683−02DE
ORDERING INFORMATION
Device
Package
Shipping†
CM1683−02DE CUDFN−8 3000/Tape & Reel (Pb−Free)
†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.
Filter #2
© Semiconductor Components Industries, LLC, 2011
1
April, 2011 − Rev. 3
Publication Order Number: CM1683/D
Table 1. PIN DESCRIPTIONS
8−Lead CUDFN Package
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
GND PAD
GND Ground
CM1683
PACKAGE / PINOUT DIAGRAMS
Top View (Pins Down View)
8765
Bottom View (Pins Up View)
123 4
Pin 1 Marking
GND PAD
1234
876 5
CM1683−02DE 8−Lead CUDFN Package
SPECIFICATIONS
Table 2. 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
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.
Table 3. STANDARD OPERATING CONDITIONS Parameter
Operating Temperature Range
Rating −40 to +85
Units °C
Table 4. ELECTRICAL OPERATING CHARACTERISTICS (Note 1)
Symbol
Parameter
Conditions
Min Typ Max
L
Inductance
3.0
R
DC Channel Resistance
0.75
1
CTOT C
Total Channel Capacitance Capacitance C
2.5 V DC; 1 MHz, 30 mV AC 160 200 240
2.5 V DC; 1 MHz, 30 mV AC
100
ILEAK VSIG VESD
Diode Leakage Current
Signal Clamp 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
VIN = +5.0 V VIN = −5.0 V
ILOAD = 10 mA ILOAD = −10 mA (Note 2)
0.1 1.0 −1.0 −0.1
5
7
15
−15 −10 −5
±15 ±8
fC
Cut−off frequency
ZSOURCE = 50 W, ZLOAD = 50 W
L = 3 nH, C = 100 pF
31
1. TA = 25°C unless otherwise specified. 2. ESD applied to input and output pins with respect to GND, one at a time.
Units nH W pF pF mA mA V
kV
MHz
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CM1683
PERFORMANCE INFORMATION Typical Filter Performance (nominal conditions unless specified otherwise, 50 W Environment)
Figure 1. Insertion Loss vs. Frequency (Filter #1 to GND)
Frequency (MHz) Figure 2. Insertion Loss vs. Frequency (Filter #2 to GND)
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CM1683
PACKAGE DIMENSIONS
CUDFN8, 2x2, 0.5P CASE 505AF−01 ISSUE O
D
AB
PIN ONE REFERENCE
2X
0.10 C
2X
0.10 C
0.10 C
0.08 C
NOTE 4
D1 TOP VIEW
DETAIL A
SIDE VIEW
E A
D2
1
4
8X L
NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTR.