National Semiconductor LMX2315 Manuals

National Semiconductor LMX2315/LMX2320/LMX2325 PLLatinum Frequency Synthesizer Datasheet

The LMX2315, LMX2320, and LMX2325 are high-performance frequency synthesizers with integrated prescalers designed for RF operation up to 2.5 GHz. They are fabricated using National Semiconductor's ABiC IV BiCMOS process and feature a proprietary digital phase locked loop technique to generate stable, low noise signals for controlling a local oscillator.

These devices are available in a TSSOP 20-pin surface mount plastic package and operate with a supply voltage ranging from 2.7V to 5.5V. Serial data is transferred via a three-line MICROWIRE interface, and the chips feature very low current consumption, with typical values of 6 mA, 10 mA, and 11 mA respectively for the 1.2 GHz, 2.0 GHz, and 2.5 GHz models.