当前位置：文档之家 › LMX1501资料

LMX1501资料

  • 格式：pdf
  • 大小：375.47 KB
  • 文档页数：22

LMX1501A󰁋LMX1511

PLLatinum

1󰀟1

GHz

FrequencySynthesizer

for

RF

Personal

Communications

November1995

LMX1501A󰁋LMX1511PLLatinumTM

1󰀟1GHzFrequencySynthesizer

forRFPersonalCommunications

GeneralDescription

TheLMX1501AandtheLMX1511arehighperformancefre-

quencysynthesizerswithintegratedprescalersdesignedfor

RFoperationupto1󰀟1GHz󰀟TheyarefabricatedusingNa-

tional’sABiCIVBiCMOSprocess󰀟

TheLMX1501AandtheLMX1511containdualmodulus

prescalerswhichcanselecteithera64󰁋65ora128󰁋129

divideratioatinputfrequenciesofupto1󰀟1GHz󰀟Usinga

proprietarydigitalphaselockedlooptechnique󰀷the

LMX1501A󰁋11’slinearphasedetectorcharacteristicscan

generateverystable󰀷lownoiselocaloscillatorsignals󰀟

SerialdataistransferredintotheLMX1501Aandthe

LMX1511viaathreelineMICROWIRETMinterface(Data󰀷

Enable󰀷Clock)󰀟Supplyvoltagecanrangefrom2󰀟7Vto5󰀟5V󰀟

TheLMX1501AandtheLMX1511featureverylowcurrent

consumption󰀷typically6mAat3V󰀟

TheLMX1501AisavailableinaJEDEC16-pinsurface

mountplasticpackage󰀟TheLMX1511isavailableina

TSSOP20-pinsurfacemountplasticpackage󰀟Features

YRFoperationupto1󰀟1GHz

Y2󰀟7Vto5󰀟5Voperation

YLowcurrentconsumption󰀌

ICCe6mA(typ)atVCCe3V

YDualmodulusprescaler󰀌64󰁋65or128󰁋129

YInternalbalanced󰀷lowleakagechargepump

YSmall-outline󰀷plastic󰀷surfacemountJEDEC󰀷0󰀟150󰀃

wide󰀷(1501A)orTSSOP󰀷0󰀟173󰀃wide󰀷(1511)package

Applications

YCellulartelephonesystems

(AMPS󰀷NMT󰀷ETACS)

YPortablewirelesscommunications

(PCS󰁋PCN󰀷Cordless)

YAdvancedcordlesstelephonesystems

(CT-1󰁋CT-1a󰀷CT-2󰀷ISM902-928)

YOtherwirelesscommunicationsystems

BlockDiagram

TL󰁋W󰁋12340–1

TRI-STATE󰀅isaregisteredtrademarkofNationalSemiconductorCorporation󰀟MICROWIRETMandPLLatinumTMaretrademarksofNationalSemiconductorCorporation󰀟

C1995NationalSemiconductorCorporationRRD-B30M115󰁋PrintedinU󰀟S󰀟A󰀟元器件交易网www.cecb2b.com

ConnectionDiagrams

LMX1501A

TL󰁋W󰁋12340–2JEDEC16-Lead(0󰀟150󰀃Wide)Small

OutlineMoldedPackage(M)

OrderNumberLMX1501AMorLMX1501AMX

SeeNSPackageNumberM16ALMX1511

TL󰁋W󰁋12340–320-Lead(0󰀟173󰀃Wide)ThinShrink

SmallOutlinePackage(TM)

OrderNumberLMX1511TMorLMX1511TMX

SeeNSPackageNumberMTC20

PinDescriptions

PinNo󰀟PinNo󰀟PinNameI󰁋ODescription1501A15111501A󰁋1511

11OSCINIOscillatorinput󰀟ACMOSinvertinggateinputintendedforconnectiontoa

crystalresonatorforoperationasanoscillator󰀟TheinputhasaVCC󰁋2input

thresholdandcanbedrivenfromanexternalCMOSorTTLlogicgate󰀟Mayalso

beusedasabufferforanexternallyprovidedreferenceoscillator󰀟

23OSCOUTOOscillatoroutput󰀟

34VPPowersupplyforchargepumpmustbetVCC󰀟

45VCCPowersupplyvoltageinput󰀟Inputmayrangefrom2󰀟7Vto5󰀟5V󰀟Bypass

capacitorsshouldbeplacedascloseaspossibletothispinandbeconnected

directlytothegroundplane󰀟

56DoOInternalchargepumpoutput󰀟Forconnectiontoaloopfilterfordrivingtheinput

ofanexternalVCO󰀟

67GNDGround󰀟

78LDOLockdetect󰀟OutputprovidedtoindicatewhentheVCOfrequencyisin‘‘lock’’󰀟

Whentheloopislocked󰀷thepin’soutputisHIGHwithnarrowlowpulses󰀟

810fINIPrescalerinput󰀟SmallsignalinputfromtheVCO󰀟

911CLOCKIHighimpedanceCMOSClockinput󰀟Dataisclockedinontherisingedge󰀷into

thevariouscountersandregisters󰀟

1013DATAIBinaryserialdatainput󰀟DataenteredMSBfirst󰀟LSBiscontrolbit󰀟High

impedanceCMOSinput󰀟

1114LEILoadenableinput(withinternalpull-upresistor)󰀟WhenLEtransitionsHIGH󰀷

datastoredintheshiftregistersisloadedintotheappropriatelatch(controlbit

dependent)󰀟ClockmustbelowwhenLEtoggleshighorlow󰀟SeeSerialData

InputTimingDiagram󰀟

1215FCIPhasecontrolselect(withinternalpull-upresistor)󰀟WhenFCisLOW󰀷the

polarityofthephasecomparatorandchargepumpcombinationisreversed󰀟

X16BISWOAnalogswitchoutput󰀟WhenLEisHIGH󰀷theanalogswitchisON󰀷routingthe

internalchargepumpoutputthroughBISW(aswellasthroughDo)󰀟

13frOMonitorpinofphasecomparatorinput󰀟Programmablereferencedivideroutput󰀟

14fpOMonitorpinofphasecomparatorinput󰀟Programmabledivideroutput󰀟

X17fOUTOMonitorpinofphasecomparatorinput󰀟CMOSOutput󰀟

1518wpOOutputforexternalchargepump󰀟wpisanopendrainN-channeltransistorand

requiresapull-upresistor󰀟

1620wrOOutputforexternalchargepump󰀟wrisaCMOSlogicoutput󰀟

X2󰀷9󰀷12󰀷19NCNoconnect󰀟

2元器件交易网www.cecb2b.com

FunctionalBlockDiagram

LMX1501A

TL󰁋W󰁋12340–40

3元器件交易网www.cecb2b.com

FunctionalBlockDiagram(Continued)

LMX1511

TL󰁋W󰁋12340–4

4元器件交易网www.cecb2b.com

合集下载

LMX2352TMNOPB;LMX2352TMXNOPB;LMX2350TMNOPB;LMX2350TMXNOPB;LMX2350SLBX;中文规格书,Datasheet资料

LMX2352TMNOPB;LMX2352TMXNOPB;LMX2350TMNOPB;LMX2350TMXNOPB;LMX2350SLBX;中文规格书,Datasheet资料

LMX2350,LMX2352

LMX2350/LMX2352 PLLatinum Fractional N RF / Integer N IF Dual Low Power Frequency Synthesizer

Literature Number: SNAS022B

/

LMX2350/LMX2352

PLLatinumFractionalNRF/IntegerNIF

DualLowPowerFrequencySynthesizer

LMX23502.5GHz/550MHz

LMX23521.2GHz/550MHz

GeneralDescription

TheLMX2350/2352ispartofafamilyofmonolithicinte-

gratedfractionalN/IntegerNfrequencysynthesizersde-

signedtobeusedinalocaloscillatorsubsystemforaradio

transceiver.ItisfabricatedusingNational’s0.5µABiCV

siliconBiCMOSprocess.TheLMX2350/2352containsdual

modulusprescalersalongwithmodulo15or16fractional

compensationcircuitryintheRFdivider.A16/17or32/33

prescaleratiocanbeselectedfortheLMX2350,andthe

LMX2352provides8/9or16/17prescaleratios.TheIF

circuitryforboththeLMX2350andLMX2352containsan8/9

prescaler,ingafractionalN

A-1501H中文资料

A-1501H中文资料

C/A-1501X, C/A-1505X SINGLE DIGIT DISPLAY

Part No. Chip Electro-Optical Characteristics Vf(V)20mA Iv(ucd)10mA Shape Common Cathode Common Anode Raw Material Emitted Color Wave Lengthλp(nm)Typ. Max. Typ. Fig. No.

C-1501H A-1501H GaP Red 700 4.2 5.6 1200

C-1501E A-1501E GaAsP/GaPHi.effi Red 635 4.0 5.6 4200

C-1501G A-1501G GaP Green 565 4.2 5.6 4000

C-1501Y A-1501Y GaAsP/GaPYellow 585 4.2 5.6 3200

C-1501SR A-1501SR GaAlAs Super Red 660 3.6 4.8 40000 D17

C-1505H A-1505H GaP Red 700 4.2 5.6 1200

C-1505E A-1505E GaAsP/GaPHi.effi Red 635 4.0 5.6 4200

C-1505G A-1505G GaP Green 565 4.2 5.6 4000

C-1505Y A-1505Y GaAsP/GaPYellow 585 4.2 5.6 3200

C-1505SR A-1505SR GaAlAs Super Red 660 3.6 4.8 40000 D18

Fig.D17

Fig.D18

1.All dimension are in millimeters (inches).

2.Tolerance is ±0.25 mm (0.01”) unless otherwise specified. 元器件交易网

LMX1501资料

LMX1501资料

LMX1501A󰁋LMX1511

PLLatinum

1󰀟1

GHz

FrequencySynthesizer

for

RF

Personal

Communications

November1995

LMX1501A󰁋LMX1511PLLatinumTM

1󰀟1GHzFrequencySynthesizer

forRFPersonalCommunications

GeneralDescription

TheLMX1501AandtheLMX1511arehighperformancefre-

quencysynthesizerswithintegratedprescalersdesignedfor

RFoperationupto1󰀟1GHz󰀟TheyarefabricatedusingNa-

tional’sABiCIVBiCMOSprocess󰀟

TheLMX1501AandtheLMX1511containdualmodulus

prescalerswhichcanselecteithera64󰁋65ora128󰁋129

divideratioatinputfrequenciesofupto1󰀟1GHz󰀟Usinga

proprietarydigitalphaselockedlooptechnique󰀷the

LMX1501A󰁋11’slinearphasedetectorcharacteristicscan

generateverystable󰀷lownoiselocaloscillatorsignals󰀟

SerialdataistransferredintotheLMX1501Aandthe

LMX1511viaathreelineMICROWIRETMinterface(Data󰀷

Enable󰀷Clock)󰀟Supplyvoltagecanrangefrom2󰀟7Vto5󰀟5V󰀟

TheLMX1501AandtheLMX1511featureverylowcurrent

XL1507 150KHz 40V 3A开关电流降压型DC-DC转换器说明书

XL1507 150KHz 40V 3A开关电流降压型DC-DC转换器说明书

Datasheet 150KHz 40V 3A开关电流降压型DC-DC转换器 XL1507

Rev 1.1 1 特点  4.5V到40V宽输入电压范围  输出版本固定5V和ADJ可调  输出电压1.23V到37V可调  最大占空比100%  最小压差1.5V  固定150KHz开关频率  最大3A开关电流  内置功率三极管  高效率  出色的线性与负载调整率  EN脚TTL关机功能  EN脚迟滞功能  内置热关断功能  内置限流功能  内置二次限流功能  TO252-5L封装 应用  LCD电视与显示屏  数码相框  机顶盒  路由器  通讯设备供电 描述 XL1507是一款高效降压型DC-DC转换器，固定150KHz开关频率，可以提供最高3A输出电流能力，具有低纹波，出色的线性调整率与负载调整率特点。XL1507内置固定频率振荡器与频率补偿电路，简化了电路设计。 PWM控制环路可以调节占空比从0~100%之间线性变化。内置使能功能、输出过电流保护功能。当二次限流功能启用时，开关频率从150KHz降至50KHz。内部补偿模块可以减少外围元器件数量。 图1.XL1507封装 Datasheet 150KHz 40V 3A开关电流降压型DC-DC转换器 XL1507

Rev 1.1 2 引脚配置 ENGNDSWVINFB12345TO252-5LMetal Tab GND 图2. XL1507引脚配置 表1.引脚说明 引脚号 引脚名称 描述 1 VIN 电源输入引脚，支持DC4.5V~40V宽范围电压操作，需要在VIN与GND之间并联电解电容以消除噪声。 2 SW 功率开关输出引脚，SW是输出功率的开关节点。 3 GND 接地引脚。 4 FB 反馈引脚，通过外部电阻分压网络，检测输出电压进行调整，参考电压为1.23V。 5 EN 使能引脚，低电平工作，高电平关机，悬空时为低电平。 Datasheet 150KHz 40V 3A开关电流降压型DC-DC转换器 XL1507