ics477-05 Integrated Device Technology, ics477-05 Datasheet

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ics477-05

Manufacturer Part Number
ics477-05
Description
Quad Pll With Vcxo For Hdtv
Manufacturer
Integrated Device Technology
Datasheet
QUAD PLL WITH VCXO FOR HDTV
IDT™ / ICS™ QUAD PLL WITH VCXO FOR HDTV
Description
The ICS477-05 generates five high-quality,
high-frequency clock outputs including two reference
outputs from a low frequency pullable crystal. It is
designed to replace crystals and crystal oscillators in
most electronic systems.
Using Phase-Locked-Loop (PLL) techniques, the
device runs from a fundamental mode, pullable crystal.
It can replace multiple crystals and oscillators, saving
board space and cost.
Block Diagram
External capacitors
may be required
27 MHz
Pullable
Crystal
X2
X1
VIN
Controlled
Oscillator
Voltage
Crystal
PLLA
PLLB
PLLC
PLLD
VDD
6
1
PDTS
Features
Packaged in 28-pin SSOP (QSOP)
Available in Pb-free packaging
Replaces a VCXO plus multiple crystals and
oscillators
On-chip patented VCXO pull range 200 ppm
(minimum)
Duty cycle of 45/55
Operating voltage of 3.3V
Advanced, low power, CMOS process
Input crystal frequency of 27 MHz
Five output clocks
Industrial temperature range available
Enable
Control
Divide
Output
Logic
and
GND
10
2
ICS477-05
54.054M
74.175M
54M
27M
DATASHEET
ICS477-05
REV H 062404

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ics477-05 Summary of contents

Page 1

... QUAD PLL WITH VCXO FOR HDTV Description The ICS477-05 generates five high-quality, high-frequency clock outputs including two reference outputs from a low frequency pullable crystal designed to replace crystals and crystal oscillators in most electronic systems. Using Phase-Locked-Loop (PLL) techniques, the device runs from a fundamental mode, pullable crystal. ...

Page 2

... MHz clock output. Weak internal pull-down when tri-state. Power Connect to ground. Input Powers down entire chip. Tri-states CLK outputs when low. Internal pull-up. Input Crystal connection. Connect MHz fundamental mode pullable crystal. 2 VCXO AND SYNTHESIZER Pin Description ICS477-05 REV H 062404 ...

Page 3

... CL. To determine the value of the crystal capacitors: 1. Connect VDD of the ICS477-05 to 3.3 V. Connect pin 4 of the ICS477-05 to the second power supply. Adjust the voltage on pin 3 to 0V. Measure and record the frequency of the 27 MHz output. ...

Page 4

... Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS477-05. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied ...

Page 5

... Note VCXO AND SYNTHESIZER Typ. Max. Units +85 C +3.3 +3.45 V Min. Typ. Max. Units 3.15 3 0.8 V VDD-0.4 V 2.4 V 0.4 V ± 360 k 510 k Min. Typ. Max. Units 27 MHz ±100 ppm 150 ppm/V 1 ±200 ps ICS477-05 REV H 062404 ...

Page 6

... PDTS high to output locked to ±1% PDTS low to tri-state Marking Diagram 28 15 ###### YYWW 14 1 Marking Diagram 15 28 ###### YYWW VCXO AND SYNTHESIZER Min. Typ. Max. Units 1.0 ns 1.3 ns 300 ps 250 (Pb free) 15 ICS477R-05LF ###### YYWW 14 (Pb free, industrial) 15 ICS477R-05ILF ###### YYWW 14 ICS477-05 REV H 062404 ...

Page 7

... L Package Temperature 28-pin SSOP 28-pin SSOP 28-pin SSOP -40 to +85 C 28-pin SSOP -40 to +85 C 28-pin SSOP 28-pin SSOP 28-pin SSOP -40 to +85 C 28-pin SSOP -40 to +85 C ICS477-05 Inches Max .069 .010 .059 0.012 .010 .394 .244 .157 .050 + +70 C ...

Page 8

... ICS477-05 QUAD PLL WITH VCXO FOR HDTV 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. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) © ...

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