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參數(shù)資料
| 型號： | WI125 |
| 廠商： | Connor-Winfield |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC GPS TIMING RECEIVER-OEM SMT |
| 產(chǎn)品培訓模塊： | 125 Series GPS Based Timing and Synchronization Products |
| 特色產(chǎn)品： | Wi125 GPS Timing Receiver |
| 標準包裝： | 1 |
| 類型： | 定時模塊，系統(tǒng)時鐘 |
| PLL： | 無 |
| 主要目的： | GPS，WiMax |
| 輸入： | 時鐘 |
| 輸出： | 時鐘 |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:2 |
| 差分 - 輸入:輸出： | 無/無 |
| 頻率 - 最大： | 10MHz |
| 電源電壓： | 1.65 V ~ 3.6 V |
| 工作溫度： | -30°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 42-QFN |
| 包裝： | 散裝 |
| 其它名稱： | CW680 W125 |
Wi125 Data Sheet #:
SG170
Page 10 of 20
Rev:
04
Date:
11/29/11
Copyright 2011 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
VBATT
Type:Power
Direction:Input/Output
Pin:27
TheBatteryBackupSupply.TheWi125hasanonboardRealTimeClock(RTC).Thisis
poweredfromtheVBATTsignal.Asupplyoftypically3v(greaterthan2.5Vandlessthan
DIG_3V3)shouldbeappliedtothissignal.Thissignalcanbeleftfloatingifnotrequired.
Theinputhasablockingdiodeandsorechargeablebatterieswillneedanexternalcharg-
ingcircuit.Typically,a1Kresisterinserieswiththissignalandtheexternalbatterywill
provideaneasymethodofmeasuringthecurrentconsumptionfromVBATTduringtest.
4.2 RF Signals
RF_IN
Type:RF
Direction:Input
Pin:24
TheRFInputSignal.ThisattachestotheGPSantenna.StandardRFdesignrulesmust
beusedwhentrackingtothissignal.ThissignalhasanRFblockedconnectiontothe
ANT_SUPPLYsignal.ThisisthesamesignalpresentedontheRFconnectoronthe
Wi125.Onlyoneantennaconnectionshouldbemade.IftheRFconnectoristobeused,
thenthereshouldbenoconnection,evenanunconnectedpad,tothiscastellation.
TRIM
Type:RF
Direction:Input
Pin:12
ThissignaltrimstheoutputfrequencyoftheVCTCXO.Thissignalisnormallyleftopen.
Whenfloating,thissignalisbiasedtothecontrolvoltageoftheVCTCXO.Anynoisein-
jectedintothissignalwillseverelycompromisetheperformanceoftheWi125.Thissignal
shouldonlybeusedinconjunctionwithspecificapplicationnotes.
EXT_CLK
Type:RF
Direction:Input
Pin:7
Thisinputistheexternalclockinput.Thissignalistobeusedonlyinspecialbuildsof
theWi125thatarenotfittedwithaninternalVCTCXO.Forthenormalbuild,containing
theVCTCXO,donotconnectthisinput.Theexternalclockisa9MHzto26MHzclipped
sinewaveinputwithanamplitudebetween1Vand3Vpeaktopeak.Thereturnpathfor
thissignalisRF_GND.
4.3 Emulation/Test Signals
TDI
Type:Test
Direction:Input
Pin:14
TheTestDataInSignal.ThisisthestandardJTAGtestdatainput.Thesignalreturnpath
isDIG_GND.
TDO
Type:Test
Direction:Output
Pin:13
TheTestDataOutSignal.ThisisthestandardJTAGtestdataoutput.Thesignalreturn
pathisDIG_GND.
TCK
Type:Test
Direction:Input
Pin:20
TheTestClockSignal.ThisisthestandardJTAGtestclockinput.Thesignalreturnpathis
DIG_GND.
4 SIGNAL DESCRIPTION continued
4.1 Power Signals cont’d
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