Radiation tolerant to 100 krad TID, UltraCMOS® PE97240 can perform for 10+ years in harsh space conditions. Phase-locked loop consists of dual modulus prescaler, counters, phase detector, and control logic. Integer-N frequency synthesizer generates multiple output frequencies from single reference input frequency. Housed in 44-lead, hermetically sealed CQFP package, PLL consumes 75 µA at 2.7 V, and achieves max FOM (floor) of -227 dBc/Hz with 5/6 prescaler and -225 dBc/Hz with 10/11 prescaler.