General Description
●The LMX2335, LMX2336 and LMX2337 are monolithic, integrated dual frequency synthesizers, including two high frequency prescalers, and are designed for applications requir ing two RF phase-lock loops. They are fabricated using National’s ABiC IV silicon BiCMOS process.
●Features
●■ 2.7V to 5.5V operation
●■ Low current consumption
●■ Selectable powerdown mode:
● ICC = 1 µA (typ)
●■ Dual modulus prescaler: 64/65 or 128/129
●■ Selectable charge pump TRI-STATE® mode
●■ Selectable charge pump current levels
●■ Selectable FastLock™ mode
●Applications
●■ Cellular telephone systems (AMPS, ETACS, RCR-27)
●■ Cordless telephone systems (DECT, ISM, PHS, CT-1+)
●■ Personal Communication Systems (DCS-1800, PCN-1900)
●■ Dual Mode PCS phones
●■ CATV
●■ Other wireless communication systems