ICS181M-01T IDT, Integrated Device Technology Inc, ICS181M-01T Datasheet

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ICS181M-01T

Manufacturer Part Number
ICS181M-01T
Description
IC CLOCK GEN LOW EMI 8-SOIC
Manufacturer
IDT, Integrated Device Technology Inc
Type
Spread Spectrum Clock Generatorr
Datasheet

Specifications of ICS181M-01T

Pll
Yes
Input
Clock, Crystal
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
1:1
Differential - Input:output
No/No
Frequency - Max
75MHz
Divider/multiplier
No/No
Voltage - Supply
3.135 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC
Frequency-max
28MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
181M-01T
LOW EMI CLOCK GENERATOR
IDT™ / ICS™ LOW EMI CLOCK GENERATOR
Description
The ICS181-01 generates a low EMI output clock from
a clock or crystal input. The device uses IDT’s
proprietary mix of analog and digital Phase-Locked
Loop (PLL) technology to spread the frequency
spectrum of the output, thereby reducing the frequency
amplitude peaks by several dB.
The ICS181-01 offers down spread selection of -1.25%
and -3.75%. Refer to the MK1714-01/02 for the widest
selection of input frequencies and multipliers.
IDT offers a complete line of EMI reducing clock
generators. Consult us when you need to remove
crystals and oscillators from your board.
Block Diagram
X1/CLKIN
X2
FS2:1
SS%
Clock Buffer/
Oscillator
Crystal
GND
1
VDD
Features
and Spread
PLL Clock
Synthesis
Spectrum
Circuitry
Pin and function compatible to Cypress W181-01
Packaged in 8-pin SOIC
Provides a spread spectrum output clock
Accepts a clock input and provides same frequency
dithered output
Input frequency of 28 to 75 MHz for Clock input
Peak reduction by 7dB - 14dB typical on 3rd - 19th
odd harmonics
Spread percentage selection for -1.25% and -3.75%
Operating voltage of 3.3 V and 5 V
Industrial temperature range available
Advanced, low-power CMOS process
CLK
ICS181-01
DATASHEET
ICS181-01
REV D 051310

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ICS181M-01T Summary of contents

Page 1

LOW EMI CLOCK GENERATOR Description The ICS181-01 generates a low EMI output clock from a clock or crystal input. The device uses IDT’s proprietary mix of analog and digital Phase-Locked Loop (PLL) technology to spread the frequency spectrum of the ...

Page 2

ICS181-01 LOW EMI CLOCK GENERATOR Pin Assignment X1/CLKIN GND 3 SS% 4 8-pin (150 mil) SOIC Pin Descriptions Pin Pin Pin Type Number Name 1 X1/CLKIN Input 2 X2 Output 3 GND Power 4 SS% Input 5 ...

Page 3

ICS181-01 LOW EMI CLOCK GENERATOR External Components The ICS181-01 requires a minimum number of external components for proper operation. Decoupling Capacitor A decoupling capacitor of 0.01µF must be connected between VDD and GND on pins 6 and 3, as close ...

Page 4

ICS181-01 LOW EMI CLOCK GENERATOR Recommended Operation Conditions Parameter Ambient Operating Temperature Power Supply Voltage (measured in respect to GND) DC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V Parameter Operating Voltage Supply Current Input High Voltage Input Low ...

Page 5

ICS181-01 LOW EMI CLOCK GENERATOR AC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V± V±10%, Ambient Temperature - Parameter Input/Output Clock Frequency Input Crystal Frequency Input Clock Duty Cycle Output Clock Duty Cycle ...

Page 6

... YYWW is the last two digits of the year and week that the part was assembled. 3. “LF” denotes Pb (lead) free package. 4. “I” denotes industrial temperature range. 5. Bottom marking: country of origin. IDT™ / ICS™ LOW EMI CLOCK GENERATOR Marking Diagram SSCG (ICS181MI-01LF 181MI01L ###### YYWW 1 4 ICS181-01 REV D 051310 ...

Page 7

ICS181-01 LOW EMI CLOCK GENERATOR Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No INDEX AREA Ordering Information Part / Order Number 181M-01LF 181M-01LFT 181MI-01LF 181MI-01LFT Parts that are ordered ...

Page 8

ICS181-01 LOW EMI CLOCK GENERATOR Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject ...

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