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LMX2330ATMNSN/a244avaiPLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications


LMX2330ATM ,PLLatinum⑩ Dual Frequency Synthesizer for RF Personal CommunicationsPin DescriptionPin PinI/O DescriptionNo. Name1V 1 — Power supply voltage input for RF analog and RF ..
LMX2330LSLDX ,2.5 GHz/510 MHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal CommunicationsBlock Diagram01280601 2001 National Semiconductor Corporation DS012806 Connection DiagramsChip Scal ..
LMX2330LTM ,2.5 GHz/510 MHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal CommunicationsLMX2330L/LMX2331L/LMX2332L PLLatinum Low Power Dual Frequency Synthesizer for RFPersonal Communicat ..
LMX2330LTMX ,2.5 GHz/510 MHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal CommunicationsLMX2330L/LMX2331L/LMX2332L PLLatinum Low Power Dual Frequency Synthesizer for RFPersonal Communicat ..
LMX2330USLEX ,2.5 GHz/600 MHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal CommunicationsLMX2330U/LMX2331U/LMX2332U PLLatinum Ultra Low Power Dual Frequency Synthesizer for RFPersonal Comm ..
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LMX2330ATM
PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications
LMX2330A/LMX2331A/LMX2332A
PLLatinum™ Dual Frequency Synthesizer for RF
Personal Communications
LMX2330A 2.5 GHz/510 MHz
LMX2331A 2.0 GHz/510 MHz
LMX2332A 1.2 GHz/510 MHz
General Description

The LMX233xA familyof monolithic, integrated dualfre-
quency synthesizers, includingprescalers,istobe usedasa
local oscillatorforRFandfirstIFofa dual conversion trans-
ceiver.Itis fabricated using National’s ABiCIV silicon
BiCMOS process.
The LMX233xA contains dual modulus prescalers.A 64/65a 128/129 prescaler (32/33or 64/65inthe2.5 GHz
LMX2330A)canbe selectedfortheRF synthesizeranda
8/9ora 16/17 prescalercanbe selectedfortheIF synthe-
sizer.LMX233XA,which employs adigitalphase locked loop
technique, combined witha high quality reference oscillator
and loop filters,providesthe tuning voltagesfor voltage con-
trolled oscillatorsto generate very stablelow noiseRFand local oscillator signals. Serial datais transferredintothe
LMX233xAviaa three wire interface (Data, Enable, Clock).
Supply voltagecan range from 2.7Vto 5.5V.The LMX233xA
family features very low current consumption;
LMX2330A—13 mAat3V, LMX2331A—12 mAat3V,
LMX2332A—8mAat3V.
The LMX233xAare availableina TSSOP 20-pin surface
mount plastic package.
Features
2.7Vto 5.5V operation Low current consumption Selectable powerdown mode:ICC=1μA typicalat3V Dual modulus prescaler:
LMX2330A (RF) 32/33or 64/65
LMX2331A/32A (RF) 64/65or 128/129
LMX2330A/31A/32A(IF)8/9or 16/17 Selectable charge pump TRI-STATE® mode Selectable FastLock™ mode Small outline, plastic, surface mount TSSOP 0.173"
wide package
Applications
Portable Wireless Communications (PCS/PCN, cordless) Cordlessand cellular telephone systems Wireless Local Area Networks (WLANs) CableTV tuners (CATV) Other wireless communication systems
Functional Block Diagram

TRI-STATE®isa registeredtrademark ofNationalSemiconductorCorporation.
Fastlock™, MICROWIRE™and PLLatinum™are trademarks ofNationalSemiconductor Corporation.
DS012331-1
May 1999
LMX2330A/LMX2331A/LMX2332A
PLLatinum
Dual
Frequency
Synthesizer
for
Personal
Communications
1999 National Semiconductor Corporation DS012331
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