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LMX2310USLDXNSCN/a114avai2.5 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications
LMX2310USLDXNSN/a2500avai2.5 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications
LMX2312USLDXNSN/a101avai1.2 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications


LMX2310USLDX ,2.5 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal CommunicationsFeaturesn RF operation up to 2.5 GHzThe LMX2310/1/2/3U are high performance frequency syn-thesizers ..
LMX2310USLDX ,2.5 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal CommunicationsLMX2310U/LMX2311U/LMX2312U/LMX2313U PLLatinum Ultra Low Power Frequency Synthesizerfor RF Personal ..
LMX2312USLDX ,1.2 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal CommunicationsBlock Diagram20043822PLLatinum™ is a trademark of National Semiconductor Corporation. 2003 National ..
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LMX2315TMX ,Frequency Synthesizer for RF Personal CommunicationsLMX2314/LMX2315PLLatinum1.2GHzFrequencySynthesizerforRFPersonalCommunicationsMarch1995TMLMX2314/LMX ..
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LMX2310USLDX-LMX2312USLDX
2.5 GHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications
LMX2310U/LMX2311U/LMX2312U/LMX2313U
PLLatinum™ Ultra Low Power Frequency Synthesizer for Personal Communications
LMX2310U 2.5 GHz LMX2311U 2.0 GHz
LMX2312U 1.2 GHz LMX2313U 600 MHz
General Description

The LMX2310/1/2/3U are high performance frequency syn-
thesizers. The LMX2310/1/2U usea selectable, dual modu-
lus 32/33 and 16/17 prescaler. The LMX2313U usesa se-
lectable, dual modulus 16/17 and8/9 prescaler. The device,
when combined witha high quality reference oscillator anda
voltage controlled oscillator, generates very stable, low noise
local oscillator signalsforup and down conversionin wire-
less communication devices.
Serial datais transferred into LMX2310/1/2/3Uviaa three-
wire interface (Data, Enable, Clock) that canbe directly
interfaced with low voltage baseband processors. Supply
voltage can range from 2.7Vto 5.5V. LMX2310U features
very low current consumption, typically 2.3 mAat 3.0V.
The LMX2310/1/2/3U are manufactured using National’s
0.5µ ABiCV silicon BiCMOS process andis availablein
20-pin CSP packages.
Features
RF operationupto2.5 GHz 2.7Vto 5.5V operation Ultra Low Current Consumption Low prescaler values
LMX2310/1/2U 32/33or 16/17
LMX2313U 16/17or8/9 Excellent Phase Noise Internal balanced, low leakage charge pump Selectable Charge Pump Current Levels Selectable Fastlock mode with Time-Out Counter Low Voltage MICROWIRE interface (1.72Vto VCC) Digital and Analog Lock Detect Small 20-pad Thin Chip Scale Package
Applications
Cellular DCS, PCS, WCDMA telephone systems Wireless Local Area Networks (WLAN) Global Positioning Systems (GPS) Other wireless communications systems
Functional Block Diagram

December 2003
LMX2310U/LMX231
1U/LMX2312U/LMX2313U
PLLatinum
Ultra
Low
Power
Frequency
for
Personal
Communications
ic,good price


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