Part # LMX2305 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LMX2305 PLLatinum Frequency Synthesizer for RF Personal Communications


Part Details:

for LMX2305 PRELIMINARY RF August 1996 Personal PLLatinum LMX2305PLLatinumTM 550 MHz Frequency Synthesizerfor RF Personal Communications Communications General Description Features The LMX2305 is a high performance frequency synthesizer Y RF operation up to 550 MHz 550 with an integrated prescaler designed for RF operation up to Y 2 65V to 5 5V operation 550 MHz It is fabricated using National s ABiC IV BiCMOS Y Low current consumption process I MHz CC e 4 0 mA (typ) at VCC e 2 75V The LMX2305 contains a dual modulus prescaler which can Y Dual modulus prescaler 64 65 or 128 129 select either a 64 65 or a 128 129 divide ratio at input fre- Y Internal balanced low leakage charge pump quencies of up to 550 MHz LMX2305 which employs the Y Small-outline plastic surface mount TSSOP Frequency digital phase lock loop technique combined with a high 0 173 wide package quality reference oscillator and a loop filter provides thetuning voltage for the voltage controlled oscillator to gener- Applications ate a very stable low noise local oscillator signal Y Analog Cellular telephone systems Serial data is transferred into the LMX2305 via a three line (AMPS ETACS NMT) MICROWIRETM interface (Data Enable Clock) Supply volt- Y Portable wireless communications age can range from 2 65V to 5 5V The LMX2305 features (PCS PCN cordless) very low current consumption typically 4 0 mA at 2 75V Y Synthesizer Wireless local area networks (WLANs) The LMX2305 is available in a TSSOP 20-pin surface mount


Please click the following link to download the datasheet:

LMX2305.pdf Datasheet