Abstract
It briefly introduced The LMX2310/1/2/3U high performance frequency synthesizers’s
microcontroller function, internal structure, pin array and typical apply circuit. The LMX2310/1/2U use a selectable, dual modulus 32/33 and 16/17 prescaler. The LMX2313U uses a selectable,dual modulus 16/17 and 8/9 prescaler. The device,when combined with a high quality reference oscillator and a voltage controlled oscillator, generates very stable, low noise local oscillator signals for up and down conversion in wireless communication devices.
Serial data is transferred into LMX2310/1/2/3U via a threewire interface (Data, Enable, Clock) that can be directly interfaced with low voltage baseband processors. Supply voltage can range from 2.7V to 5.5V.