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ICS281G-XXLF PDF预览

ICS281G-XXLF

更新时间: 2024-10-28 08:35:19
品牌 Logo 应用领域
艾迪悌 - IDT 光电二极管
页数 文件大小 规格书
10页 221K
描述
Clock Generator, 200MHz, CMOS, PDSO16, 0.173 INCH, ROHS COMPLIANT, TSSOP-16

ICS281G-XXLF 数据手册

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PRELIMINARY DATASHEET  
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER ICS281  
Description  
Features  
The ICS281 field programmable spread spectrum clock  
synthesizer generates up to three 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.  
Packaged as 16-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  
Input clock frequency of 3 to 166 MHz  
Up to three reference outputs  
Operating voltages of 3.3 V  
VDDO output control from 1.8 V to 3.3 V  
Controllable output drive levels  
TM  
Using ICS’ VersaClock software to configure PLLs and  
outputs, the ICS281 contains a One-Time Programmable  
(OTP) ROM for field programmability. Programming  
features include input/output frequencies, spread spectrum  
amount and eight selectable configuration registers.  
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.  
Advanced, low-power CMOS process  
Available in Pb (lead) free packaging  
The ICS281 is also available in factory programmed custom  
versions for high-volume applications.  
Block Diagram  
3
VDDO  
VDD  
PLL1 with  
Spread  
Spectrum  
3
S2:S0  
OTP  
ROM  
CLK1  
CLK2  
CLK3  
with PLL  
Values  
Divide  
Logic  
and  
Output  
Enable  
Control  
PLL2  
PLL3  
Crystal or  
clock input  
X1/ICLK  
Crystal  
Oscillator  
X2  
3
GND  
External capacitors  
are required with a crystal input.  
PDTS  
IDT™ / ICS™ TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER 1  
ICS281  
REV C 061306  

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