type dfo s4-s revision 00 checked ne date 19.05.2008 page xx frequency control products h i g h p e r f o r m a n c e s m d o c x o t y p e d f o s 4 - s features 10 mhz standard package very high stability applications instrumentation, reference function dfo s4 output 1 oven alarm output 2 gnd 3 v ref. 4 voltage control 5 e/d 6 vcc 7 type dfo s4 - s frequency 10 mhz electrical specifications supply voltage 12 v 5 % supply current (no load) @ 25c 100 ma supply current during warm up 350 ma output load sine wave, 50 output level + 5 dbm, +10 dbm harmonics -20 dbc ssb phase noise (1 hz b.w.) -145 dbc/hz @ 100 hz -150 dbc/hz @ 1 khz -150 dbc/hz @ 10 khz -150 dbc/hz @ 100k hz enable/disable (pin 6) low = disable, high = enable oven alarm output (pin 2) low = alarm, high = oven ready v ref. (pin 4) 5 v warm up time 10 ppb in 10 min @ 25c frequency stability detailed tolerances after 30 days of operation type temperature model stability versus : range code temperature vcc 5 % load 5 % daily ageing yearly ageing calibration @ 25c all types -10 to 60c d5 5 ppb 0.5 ppb typ. 0.5 ppb 0.5 ppb 30 ppb 50 ppb long term ageing 500 ppb over 15 years short term stability (allan variance) 5 x 10 -12 for = 1 sec., 1 x 10 -11 for = 10 sec. options code external voltage v 0 v to vref centered @ 2.5 v 1 ppm ordering code type + option code + frequency + model code + voltage example dfo 25-s 10 mhz d5/12 8.9 8.9 23.6 17.8 3.0 4.0 20.4 25.40.2 22.20.5 1.2 20.4 2.5 2.5 h0.2 1 2 3 4 7 6 5 7.6 7.62 h = 11mm pc board footprint
|
