LMX2322

www.DataSheet4U.com Advance Information LMX2322 PLLatinumTM 2.0 GHz Frequency Synthesizer for RF Personal Communications General Description The LMX2322 is a high performance frequency synthesizer with integrated 32/33 dual modulus prescaler designed for RF operation up to 2.0 GHz. Using a proprietary digital phase locked loop technique, the LMX2322’s linear phase detector characteristics can generate very stable, low noise control signals for UHF and VHF voltage controlled oscillators. Serial data is transferred into the LMX2322 via a three-line TM MICROWIRE interface (Data, LE, Clock). Supply voltage range is from 2.7 V to 3.9 V. The LMX2322 features very low current consumption, typically 3.5 mA at 3.75V. The charge pump provides 4mA output current. The LMX2322 is manufactured using National’s ABiC V BiCMOS process and is packaged in a 16 pin TSSOP and a 16 pin Chip Scale Package (CSP). Features „ „ „ RF operation up to 2.0 GHz 2.7 V to 3.9 V operation Low current consumption: Icc = 3.5 mA (typ) at Vcc = 3.75 V „ Dual modulus prescaler: 32/33 „ Internal balanced, low leakage charge pump Applications „ „ „ „ Cellular telephone systems (GSM, NADC, CDMA, PDC, PHS) Personal wireless communications (DCS-1800, DECT, CT-1+) Wireless local area networks (WLANs) Other wireless communication systems Functional Block Diagram OSC 10-Bit R Counter OSCin CLOCK LE DATA 18-Bit Microwire Interface Phase Comp Charge Pump CPo fin fin Prescaler 32/33 15-Bit N Counter 9/24/1...