Available in 40-pin, 6 x 6 mm QFN package, Models LMX2582 and LMX2592 support output frequencies up to 5.5 GHz and 9.8 GHz, respectively. Devices provide 1.8 GHz carrier open-loop VCO phase noise of -144.5 dBc/Hz at 1 MHz offset. Featuring normalized PLL noise floor at -231 dBc/Hz and phase-detector frequency of 400 MHz, products enable very low integrated noise of 47 fs RMS jitter. Low-dropout regulators manage power supply variations and optimize noise immunity.