National LMX2505 handbook
Update: 30 September, 2023
LMX2505 is a highly integrated, high performance, low power frequency synthesizer system optimized for dual-band Japan PDC mobile handsets. Using a proprietary digi- tal phase locked loop technique, LMX2505 generates very stable, low noise local oscillator signals for up and down conversion in wireless communications devices. LMX2505 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 concert these blocks form a closed loop RF synthesizer system. The RF synthesizer system supports two frequency bands: PDC1500 and PDC800. Serial data is transferred to the device via a three-wire MICROWIRE interface (DATA, LE, CLK). Operating supply voltage ranges from 2.5 V to 3.3 V. LMX2505 features low current consumption: 10 mA at 2.8 V when operating in the PDC800 mode. LMX2505 is available in a 28-pin leadless leadframe pack- age (LLP).
Brand: National
File format: PDF
Size: 211 KB
MD5 Checksum: 5E1DCA67D4A4E97AEAE05FE36549E267
Publication date: 06 July, 2012
Downloads: -
PDF Link: National LMX2505 handbook PDF