Datasheet > 5V925QGI

5V925QGI

更新时间： 2024-12-01 07:19:19

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
7页	52K
描述
Clock Generator, PDSO16

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数据手册

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5V925QGI 数据手册

IDT5V925

PROGRAMMABLECLOCKGENERATOR

INDUSTRIALTEMPERATURERANGE

PROGRAMMABLE

IDT5V925

CLOCK GENERATOR

DESCRIPTION:

FEATURES:

TheIDT5V925isahigh-performance,lowskew,lowjitterphase-locked

loop(PLL)clockdriver.Itprovidesprecisephaseandfrequencyalignment

of its clock outputs to an externally applied clock input or internal crystal

oscillator. The IDT5V925 has been specially designed to interface with

Gigabit Ethernet and Fast Ethernet applications by providing a 125MHz

clock from 25MHz input. It can also be programmed to provide output

frequencies ranging from 3.125MHz to 160MHz with input frequencies

ranging from 3.125MHz to 80MHz.

• 3V to 3.6V operating voltage

• 3.125 MHz to 160MHz output frequency range

• 4 programmable frequency outputs

• Input from fundamental crystal oscillator or external source

• Balanced Drive Outputs ±12mA

• PLL disable mode for low frequency testing

• Select inputs (S[1:0]) for divide selection (multiply ratio of 2,

3, 4, 5, 6, 7, and 8)

TheIDT5V925includesaninternalRCfilterthatprovidesexcellentjitter

characteristics and eliminates the need for external components. When

usingtheoptionalcrystalinput,thechipacceptsa10-30MHzfundamental

modecrystalwithamaximumequivalentseriesresistanceof50Ω. Theon-

chipcrystaloscillatorincludesthefeedbackresistorandcrystalcapacitors

(nominal load capacitance is 15pF).

• 5V tolerant inputs

• Low output skew/jitter

• External PLL feedback, internal loop filter

• Available in 16-pin QSOP package

APPLICATIONS:

• Ethernet/fast ethernet

• Router

• Network switches

• SAN

• Instrumentation

FUNCTIONALBLOCKDIAGRAM

SELECT

MODE

PHASE

LOOP

VCO

DIVIDE

1/N

DETECTOR

FILTER

CLKIN

Q/N

XTAL

OSC

OPTIONAL

CRYSTAL

TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.

INDUSTRIAL TEMPERATURE RANGE

SEPTEMBER 2002

2002 Integrated Device Technology, Inc.

DSC-5943/1

12 3 4 5 6 7

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