frequency control products type dfa s7-c revision 00 checked ne date 14.10.2002 page 57 low cost surface mount tcxo dfa s7-ch (5 v) & dfa s7-clh (3.3 v) key features 1.5 to 25 mhz tight temperature stability analogue temperature compensation applications transmissions, access, microwave function dfa s7 v control / nc 1 gnd 2 output 3 vcc 4 type dfa s7-ch dfa s7-clh frequency range 1.5 to 25 mhz 1.5 to 25 mhz electrical specifications supply voltage 5 v 5 % 3.3 v 5 % supply current ( no load) 20 ma 10 ma output load hcmos 15 pf or 2 ttl hcmos 15 pf or 2 ttl duty cycle @ 50% level 45/55...55/45 % 45/55...55/45 % rise/fall times (10 to 90 %) 5 ns 5 ns high/low levels or output amplitude 4.5 v/ 0.5 v 2.8 v/ 0.3 v start-up 10 ms @ 4.75 v 10 ms @ 3.15 v frequency stability detailed tolerances [ ppm ] temperature model stability versus: calibration type range code temperature vcc 5 % load 10 % ageing @ 25 c 0 to 70c b0.5 0.5 -20 to 70c c1.5 1.5 all types -30 to 75c n2.5 2.5 0.3 0.1 1 1 remark ageing is 1 st year at 25c options code voltage control on pin 1 (positive slope ) v 5 ppm, 15 ppm 2.5 v 2 v 5 ppm, 15 ppm 1.65 v 1.35 v ordering code type + option code + frequency + model code example dfa s7-clhv 19.440 mhz c1.5 h = 9.30 mm 19.0 1.3 2.6 1 2 3 4 12.90.2 19.90.1 h0.15 18.4 7.6 1.2 1.27 7.62 1.6 pc board footprint
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