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LMX2310U Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMX2310U
Description  PLLatinum™ Ultra Low Power Frequency Synthesizer for RF Personal Communications
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LMX2310U Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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LMX2310U/LMX2311U/LMX2312U/LMX2313U
PLLatinumUltra Low Power Frequency Synthesizer for
RF 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 use a selectable, dual modu-
lus 32/33 and 16/17 prescaler. The LMX2313U uses a se-
lectable, dual modulus 16/17 and 8/9 prescaler. The device,
when combined with a high quality reference oscillator and a
voltage controlled oscillator, generates very stable, low noise
local oscillator signals for up and down conversion in wire-
less communication devices.
Serial data is transferred into LMX2310/1/2/3U via a three-
wire interface (Data, Enable, Clock) that can be directly
interfaced with low voltage baseband processors. Supply
voltage can range from 2.7V to 5.5V. LMX2310U features
very low current consumption, typically 2.3 mA at 3.0V.
The LMX2310/1/2/3U are manufactured using National’s
0.5µ ABiC V silicon BiCMOS process and is available in
20-pin CSP packages.
Features
n
RF operation up to 2.5 GHz
n
2.7V to 5.5V operation
n
Ultra Low Current Consumption
n
Low prescaler values
LMX2310/1/2U 32/33 or 16/17
LMX2313U 16/17 or 8/9
n
Excellent Phase Noise
n
Internal balanced, low leakage charge pump
n
Selectable Charge Pump Current Levels
n
Selectable Fastlock mode with Time-Out Counter
n
Low Voltage MICROWIRE interface (1.72V to V
CC)
n
Digital and Analog Lock Detect
n
Small 20-pad Thin Chip Scale Package
Applications
n
Cellular DCS, PCS, WCDMA telephone systems
n
Wireless Local Area Networks (WLAN)
n
Global Positioning Systems (GPS)
n
Other wireless communications systems
Functional Block Diagram
20043822
PLLatinumis a trademark of National Semiconductor Corporation.
December 2003
© 2003 National Semiconductor Corporation
DS200438
www.national.com


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