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ICS290PG

Description
IC clk synth trpl pll 20-tssop
Categorysemiconductor    Analog mixed-signal IC   
File Size163KB,10 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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ICS290PG Overview

IC clk synth trpl pll 20-tssop

DATASHEET
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER
ICS290
Description
The ICS290 field programmable spread spectrum clock
synthesizer generates up to eight high-quality,
high-frequency clock outputs including multiple reference
clocks from a low-frequency crystal input. It is designed to
replace crystals, crystal oscillators and stand alone spread
spectrum devices in most electronic systems.
Using IDT’s VersaClock
TM
software to configure PLLs and
outputs, the ICS290 contains a One-Time Programmable
(OTP) ROM for field programmability. Programming
features include input/output frequencies, spread spectrum
amount, eight selectable configuration registers and up to
two sets of four low-skew outputs.
Using Phase-Locked Loop (PLL) techniques, the device
runs from a standard fundamental mode, inexpensive
crystal, or clock. It can replace multiple crystals and
oscillators, saving board space and cost.
The ICS290 is also available in factory programmed custom
versions for high-volume applications.
Features
Packaged as 20-pin TSSOP
Eight addressable registers
Replaces multiple crystals and oscillators
Output frequencies up to 200 MHz at 3.3 V
Configurable Spread Spectrum Modulation
Input crystal frequency of 5 to 27 MHz
Clock input frequency of 3 to 166 MHz
Up to eight reference outputs
Up to two sets of four low-skew outputs
Operating voltages of 3.3 V
Controllable output drive levels
Advanced, low-power CMOS process
Available in Pb (lead) free packaging
NOTE: EOL for non-green parts to occur on
5/13/10 per PDN U-09-01
Block Diagram
VDD
PLL1 with
Spread
Spectrum
Divide
Logic
and
Output
Enable
Control
3
S2:S0
3
CLK1
CLK2
CLK3
CLK4
CLK5
CLK6
CLK7
CLK8
OTP
ROM
with PLL
Values
PLL2
PLL3
X1/ICLK
Crystal or
Clock Input
Crystal
Oscillator
X2
External capacitors
are required with a crystal input.
GND
3
PDTS
IDT™ / ICS™
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER 1
ICS290
REV F 083109

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ICS290PG ICS290PGI ICS290PGIT ICS290PGT
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