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Vcc (x5)

GND (x3)

Fin

Fin*

OSCin

R Divider

(16 bit)

Charge

Pump

CPout

MICROWIRE

Interface

CLK

LE

DATA

CE

GND/OSCin*

2X

Vcp

MUX

MUXout

MOD

TRIG1

TRIG2

Modulation

Generator

N Divider

(18 bit)

6'

Compensation

(24 bit)

18 :

68 :

R2_LF

C2_LF

C1_LF

51 :

51 :

36 :

Phase

Comp

51 :

18 :

18 :

To Circuit

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMX2492

,

LMX2492-Q1

SNAS624B–MARCH2014–REVISEDMAY2015

LMX2492/LMX2492-Q114GHzLowNoiseFractionalNPLLwithRamp/ChirpGeneration

1Features3Description

TheLMX2492/92-Q1isalownoise14GHz

1

•-227dBc/HzNormalizedPLLNoise

widebanddelta-sigmafractionalNPLLwithrampand

•500MHz-14GHzWidebandPLL

chirpgeneration.Itconsistsofaphasefrequency

•3.15-5.25VChargePumpPLLSupply

detector,programmablechargepump,andhigh

frequencyinputfortheexternalVCO.The

•VersatileRamp/ChirpGeneration

LMX2492/92-Q1supportsabroadandflexibleclass

•200MHzMaxPhaseDetectorFrequency

oframpingcapabilities,includingFSK,PSK,and

•FSK/PSKModulationPin

configurablepiecewiselinearFMmodulationprofiles

ofupto8segments.ItsupportsfinePLLresolution

•DigitalLockDetect

andfastrampwithuptoa200MHzphasedetector

•Single3.3VSupplyCapability

rate.TheLMX2492/92-Q1allowsanyofitsregisters

•Automotive125°CQ100Grade1Qualification

tobereadback.TheLMX2492/92-Q1canoperate

•Non-Automotive(LMX2492)Option

withasingle3.3Vsupply.Moreover,supportingupto

5.25Vchargepumpcaneliminatetheneedof

externalamplifier,leadingtoasimplersolutionwith

2Applications

improvedphasenoiseperformance.

•AutomotiveFMCWRadar

•MilitaryRadar

DeviceInformation

•MicrowaveBackhaul

PARTNUMBERPACKAGEBODYSIZE(NOM)

LMX2492-Q1RTWWQFN(24)4.00mmx4.00mm

•TestandMeasurement

LMX2492RTWWQFN(24)4.00mmx4.00mm

•SatelliteCommunications

•WirelessInfrastructure

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

•SamplingClockforHighSpeedADC/DAC

4SimplifiedSchematic

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspecifikationer