参数资料
| 型号： | WI125 |
| 厂商： | Connor-Winfield |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC GPS TIMING RECEIVER-OEM SMT |
| 产品培训模块： | 125 Series GPS Based Timing and Synchronization Products |
| 特色产品： | Wi125 GPS Timing Receiver |
| 标准包装： | 1 |
| 类型： | 定时模块，系统时钟 |
| PLL： | 无 |
| 主要目的： | GPS，WiMax |
| 输入： | 时钟 |
| 输出： | 时钟 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:2 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 10MHz |
| 电源电压： | 1.65 V ~ 3.6 V |
| 工作温度： | -30°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 42-QFN |
| 包装： | 散装 |
| 其它名称： | CW680 W125 |
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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