参数资料
型号: WI125 EVAL KIT
厂商: Connor-Winfield
文件页数: 13/18页
文件大小: 0K
描述: GPS TIMING RECEIVER EVAL BOARD
产品培训模块: 125 Series GPS Based Timing and Synchronization Products
标准包装: 1
主要目的: 计时,时钟发生器,同步器,GPS
嵌入式:
已用 IC / 零件: WI125
主要属性: 1PPS/ 10 MHz 相位校准功能
次要属性: LED 状态指示器
已供物品: 模块,板,天线,线缆,电源
其它名称: CW681
W125 EVAL KIT
Wi125 Data Sheet #:
SG170
Page 4 of 20
Rev:
04
Date:
11/29/11
Copyright 2011 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
1 INTRODUCTION
The125SeriesWi125isasmallOEMsurfacemountGPSmodulespecificallydesignedfor
useinsynchronizationandtiminginWiMaxapplications.Thiscompactmodulehasanon-
boardprogrammableNCOoscillatorthatoutputsasynthesizedfrequencyupto30MHzthat
issteeredbyaGPSreceiver.Theself-surveymodeofoperationallowsthereceivertoenter
apositionholdmodeallowingaccuratetimingtobecontinuedwithonlyonesatellitebeing
tracked.
Additionally,the125SeriesWi125hasphasealignmentof1PPS/10MHzwithaverystable
holdover.The1PPS/10MHzoutputsmaintainphasealignmentwithholdoverbeingbaseonly
onthelocaloscillator,dismissingspuriousGPSmeasurementsduringreacquisition.Whenthe
receiverregainsGPSlockafteraperiodofholdover,the1PPSand10MHzoutputsmaintain
phasealignmentandareoffsetinfrequencyatthemaximumrateof100ppbuntilthe1PPS
alignswiththatoftheGPSsolution.Thisslowrecoveryfromholdoverallowsforuninterrupted
operationoftheWiMaxbasestation.
TheWi125hasahighlyaccurateoutputfrequency,whichcanachievefullPRCMTIE
performance.AdditionallyitcantracksatellitesandprovideGPSsynchronizationinweak
signalareasincludingindoorapplications,reducingtheneedforhighantennaplacement.
TheWi125isRoHScompliantandanexceptionallysmallsurfacemountpackagewitha
highlyintegratedarchitecturethatrequiresaminimumofexternalcomponentsallowingeasy
integrationintohostsystems.
Key information includes:
SystemBlockDiagram
MaximumRatings
PhysicalCharacteristics
Wi125Dimensions,castellationinformation
SolderPadandplacementinformation
SignalDescriptions
SpecialFeatures
ApplicationInformation
Powersupplymodes
RFconnections
Grounding
BatteryBack-up
OverVoltageandReversePolarity
LED’s
ThespecificationsinthefollowingsectionsrefertothestandardsoftwarebuildsoftheWi125.Theperformance
andspecificationoftheWi125canbemodifiedwiththeuseofcustomizedsoftwarebuilds.
Features
1PPS/10MHzPhasealignment
StableHoldover
HoldoverRecovery
1PPS&NCOFrequencyOutput
GPS/UTCtime/scalesynchronization
to25nsRMS
Stableprovendesignwithlongterm
availabilityandmulti-yearsupport
12channelhardwarecorrelator
processordesign
OEMSMfootprint25x27mm
Automaticentryintoholdover
Loss-of-lockandentry-into-holdover
indication
RoHSCompliant
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