LMX2525 Datasheet | National Semiconductor

LMX2525 PLLatinum Dual Frequency Synthesizer System with Integrated VCOs April 2004 PLLatinum™ Dual Frequency Synthesizer System with Integrated VCOs General Description LMX2525 is a highly integrated, high performance, low power frequency synthesizer system optimized for dualband Japan PDC mobile handsets. Using a proprietary digital phase locked loop technique, LMX2525 generates very stable, low noise local oscillator signals for up and down conversion in wireless munications devices. LMX2525 includes dual voltage controlled oscillators (VCOs) for the upper and lower Japan PDC frequency bands, a loop filter, and a fractional-N RF PLL based on a delta sigma modulator. In...