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LMX2313U Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMX2313U Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 29 page  LMX2310U/LMX2311U/LMX2312U/LMX2313U PLLatinum™ Ultra 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 PLLatinum™ is a trademark of National Semiconductor Corporation. December 2003 © 2003 National Semiconductor Corporation DS200438 www.national.com |
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