frequency control products type dfo s1 revision pl01 checked ne date 10.04.2008 page 9.10.2 14.80.3 1.4 1.0 5.08 4 3 2 1 5.9 +0.1 -0.2 2.54 8.9 5.08 1.27 m i n i a t u r e s u r f a c e m o u n t o c x o d f o s 1 - l h v ( 3 . 3 v ) key features 10 to 26 mhz 0.25 ppm over - 20 to 70c up to 26 mhz applications bases stations, frequency reference function dfo s1 v control 1 gnd 2 output 3 vcc 4 please consult our application note about pcb desig n type dfo s1 - lhv frequency range 10 to 26 mhz standard frequencies 12.8, 13, 19.2, 20 & 26 mhz electrical specifications supply voltage 3.3 v 5 % supply power ( warm-up) @ 25c 1.9 w; 1.7 w typ supply power ( steady state) @ - 20c 0.7 w typ. supply power ( steady state) @ 25c 0.4 w typ. output load hcmos 15 pf or 2 ttl duty cycle @ 50% level 45/55...55/45 % rise/fall times (10 to 90 %) 5 ns high/low levels or output amplitude 2.8 v/ 0.3 v ssb phase noise (1 hz b.w.) -85 dbc/hz @ 10 hz (typical values at 19.2 mhz) -115 dbc/hz @ 100 hz -140 dbc/hz @ 1 khz -150 dbc/hz @ 10 khz warm-up time @ 25c 5 min to reach 100 ppb frequency stability detailed tolerances [ ppm ] type temperature model stability versus: calibration range code temperature vcc 1 % load 10 % ageing @ 25 c all types 0 to 70c b27 0.2 0.02 0.01 0.5 by control voltage -20 to 70c* c258 0.25 remark ageing is 1 st year at 25c voltage control on pin 1 (positive slope ) sufficient for 5 years calibration 4 ppm, 10 ppm relative to frequency at vco = 1.65 v 1.65 v 1.35 v input impedance 50 k , ordering code type + option code + frequency + model code example dfo s1-lhv 20.000 mhz c17 pc board footprint
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