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LMX2301

Part Number	LMX2301
Manufacturer	National Semiconductor
Description	160 MHz Frequency Synthesizer
Published	Apr 25, 2005
Detailed Description	LMX2301 PLLatinum 160 MHz Frequency Synthesizer for RF Personal Communications PRELIMINARY November 1996 LMX2301 PLLat...
Datasheet	LMX2301 PDF File

Overview

LMX2301 PLLatinum 160 MHz Frequency Synthesizer for RF Personal Communications PRELIMINARY November 1996 LMX2301 PLLatinum TM 160 MHz Frequency Synthesizer for RF Personal Communications General Description The LMX2301 is a high performance frequency synthesizer designed for RF operation up to 160 MHz It is fabricated using National’s ABiC IV BiCMOS process LMX2301 which employs the digital phase lock loop technique combined with a high quality reference oscillator and a loop filter provides the tuning voltage for the voltage controlled oscillator to generate a very stable low noise local oscillator signal Serial data is transferred into the LMX2301 via a three line MICROWIRETM interface (Data Enable Clock) Supply voltage can range from 2 7V to 5 5V The LMX2301 features very low current consumption typically 2 mA at 3V The LMX2301 is available in a TSSOP 20-pin surface mount plastic package Features Y Y Y Y Y RF operation up to 160 MHz 2 7V to 5 5V operation Low current consumption ICC e 2 mA (typ) at VCC e 3V Internal balanced low leakage charge pump Small-outline plastic surface mount TSSOP 0 173 wide package Applications Y Y Y Analog Cellular telephone systems (AMPS ETACS NMT) Portable wireless communications (PCS PCN cordless) Other wireless communication systems Block Diagram TL W 12458 – 1 TRI-STATE is a registered trademark of National Semiconductor Corporation MICROWIRETM and PLLatinumTM are trademarks of National Semiconductor Corporation C1996 National Semiconductor Corporation TL W 12458 RRD-B30M126 Printed in U S A http www national com Connection Diagram LMX2301 TL W 12458 – 2 20-Lead (0 173 Wide) Thin Shrink Small Outline Package (TM) Order Number LMX2301TM or LMX2301TMX See NS Package Number MTC20 Pin Descriptions Pin No 1 Pin Name OSCIN I O I Description Oscillator input A CMOS inverting gate input intended for connection to a crystal resonator for operation as an oscillator The input has a VCC 2 input threshold and can be driven f...

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