LMX2301 Datasheet | National Semiconductor

LMX2301 PLLatinum 160 MHz Frequency Synthesizer for RF Personal munications PRELIMINARY November 1996 LMX2301 PLLatinum TM 160 MHz Frequency Synthesizer for RF Personal munications General Description The LMX2301 is a high performance frequency synthesizer designed for RF operation up to 160 MHz It is fabricated using National’s ABi C IV Bi CMOS process LMX2301 which employs the digital phase lock loop technique bined 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 m A at 3V The LMX2301 is available in a TSSOP 20-pin surface mount plastic package Features RF operation up to 160 MHz 2 7V to 5 5V operation Low current consumption ICC e 2 m A (typ) at VCC e 3V Internal balanced low leakage charge pump Small-outline plastic surface mount TSSOP 0 173 wide package Applications Analog Cellular telephone systems (AMPS ETACS NMT) Portable wireless munications (PCS PCN cordless) Other wireless munication systems Block Diagram TL W 12458 - 1 TRI-STATE is a registered trademark of National Semiconductor Corporation MICROWIRETM and PLLatinum TM are trademarks of National Semiconductor Corporation C1996 National Semiconductor Corporation TL W 12458 RRD-B30M126 Printed in U S A http national Connection Diagram 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...