
	ON Semiconductor Electronic Components Datasheet

CM1681 Datasheet

2 Channel EMI Filter

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CM1681

2 Channel EMI Filter with

ESD Protection for

Headsets/Speakers

Features

• Two Channels of EMI Filtering

• Pi−Style EMI Filters in a Capacitor−Resistor−Capacitor (C−R−C)

Network

• ±8 kV ESD Protection (IEC 61000−4−2, Contact Discharge)

• ±15 kV ESD Protection (HBM)

• Supports AC Signals − Ideal for Audio Applications

• Greater than 40 dB of Attenuation at 1 GHz

• 8−Lead, 2.00 mm x 2.00 mm Footprint CUDFN Package

• Low Profile Height of 0.5 mm

• 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

ELECTRICAL SCHEMATIC

http://onsemi.com

CUDFN8

DE SUFFIX

CASE 505AF

MARKING DIAGRAM

P81

P81 = CM1681−02DE

ORDERING INFORMATION

Device

Package

Shipping†

CM1681−02DE 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 #1

Filter #2

10 W

100 pF R

10 W

100 pF R

100 pF

Filter #1

Filter #2

April, 2011 − Rev. 3

Publication Order Number:

CM1681/D


	ON Semiconductor Electronic Components Datasheet

CM1681 Datasheet

2 Channel EMI Filter

No Preview Available !

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

CM1681

PACKAGE / PINOUT DIAGRAMS

Top View

(Pins Down View)

8765

Bottom View

(Pins Up View)

123 4

Pin 1

Marking

GND

PAD

1234

876 5

8−Lead CUDFN Package

SPECIFICATIONS

Table 2. ABSOLUTE MAXIMUM RATINGS

Parameter

Rating

Units

Storage Temperature Range

−65 to +150

°C

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 Units

R Resistance R

8 10 12

RMATCH

CTOT

Resistor−to−Resistor Matching

Total Channel Capacitance

Capacitance C

2.5 V DC; 1 MHz, 30 mV AC 160 200 240

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

ILOAD = 10 mA

ILOAD = −10 mA

(Note 2)

0.1 1.0

−15 −10

−5

±15

±8

fC Cut−off frequency

ZSOURCE = 50 W, ZLOAD = 50 W

R = 10 W, C = 100 pF

31 MHz

1. TA = 25°C unless otherwise specified.

2. ESD applied to input and output pins with respect to GND, one at a time. Clamping voltage is measured at the opposite side of the EMI filter

to the ESD pin (i.e. if ESD is applied to pin 1 then clamping voltage is measured at pin 8).

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CM1681 Datasheet

2 Channel EMI Filter

CM1681 Datasheet

2 Channel EMI Filter

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