ICS181M-52LF IDT, Integrated Device Technology Inc, ICS181M-52LF Datasheet

IC CLOCK GEN LOW EMI 8-SOIC

ICS181M-52LF

Manufacturer Part Number
ICS181M-52LF
Description
IC CLOCK GEN LOW EMI 8-SOIC
Manufacturer
IDT, Integrated Device Technology Inc
Type
Spread Spectrum Clock Generatorr
Datasheet

Specifications of ICS181M-52LF

Pll
Yes
Input
Clock, Crystal
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
1:1
Differential - Input:output
No/No
Frequency - Max
48MHz
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
Lead free / RoHS Compliant
Other names
181M-52LF
800-1014
800-1014-5
800-1014
LOW EMI CLOCK GENERATOR
IDT™ / ICS™ LOW EMI CLOCK GENERATOR
Description
The ICS181-52 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 ICS181-52 offers center spread selection of
+/-0.625% and +/-1.875%. 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
SSON#
SS%
FS1
Clock Buffer/
Oscillator
Crystal
1
GND
VDD
Features
and Spread
PLL Clock
Pin and function compatible to Cypress W181-52
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 48 MHz for Clock input
Peak reduction by 7dB - 14dB typical on 3rd - 19th
odd harmonics
Spread percentage selection for +/-0.625% and
+/-1.875%
Operating voltage of 3.3 V and 5 V
Advanced, low-power CMOS process
Synthesis
Spectrum
Circuitry
CLK
ICS181-52
DATASHEET
ICS181-52
REV C 051310

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ICS181M-52LF Summary of contents

Page 1

LOW EMI CLOCK GENERATOR Description The ICS181-52 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 ...

Page 2

ICS181-52 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

ICS181-52 LOW EMI CLOCK GENERATOR External Components The ICS181-52 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

ICS181-52 LOW EMI CLOCK GENERATOR DC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V Parameter Operating Voltage Supply Current Input High Voltage Input Low Voltage Output High Voltage Output High Voltage Output Low Voltage Input Capacitance Output Impedance Input ...

Page 5

ICS181-52 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

ICS181-52 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-52LF 181M-52LFT “LF” denotes Pb free packaging. ...

Page 7

ICS181-52 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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