ex-240 evacuated miniature oven controlled crystal oscillator emxo tm vectron international - 267 lowell road, hudson, nh 03051 - tel: 1-88-vectron-1 - web: www.vectron.com - 1 - ex-240 series evacuated miniature crystal oscillator emxo tm description description description description the ex-240 series offers a ruggedized hybrid thick fi lm construction in a low profile hermetically sealed 16pin ddil package, which can wi thstand severe environmental conditions. this product utilizes vis emxo tm technology resulting in excellent stability performance and fast warm-up with low power consumpti on. features features features features ? temperature stability to +/-3 x 10 -8 over -20 o oo o c to +70 o oo o c ? low power consumption: <0.7w @ 25 o oo o c, <1.1w @-40 o oo o c ? low profile package: 0.93(w) x 1.03 (l) x 0.35 (h ) ? fast warm-up: 2 minutes @ 25 o oo o c ? frequencies:10 to 20mhz ? patented technique (u.s. patent 5,917,272) performance characteristics parameters options conditions units minimum typica l maximum frequency mhz 10 20 d v 3.135 3.3 3.465 supply voltage c v 4.75 5.0 5.25 turn-on power for 2 minutes @ 25 o c w 2.5 steady state @ 25 o c w 0.70 power consumption steady state @ -40 o c w 1.10 <1 x 10 -6 sec 90 warm-up time @ 25 o c <1 x 10 -7 sec 120 operating o c -55 +85 temperature storage o c -55 +85 duty cycle % 40 60 rise/fall time (10% to 90% vdd) with15pf load nsec 7 logic level 0 volt 0.1vdd cmos output a logic level 1 volt 0.9vdd g sine into 50ohms load dbm 0.0 1.5 3 h sine into 50ohms load dbm 3.0 4.5 6 harmonics dbc -25 sine output spurious dbc -60 c-208 0 o c to +70 o c reference to frequency @ 25 o c ppb +/-20 d-308 -20 o c to +70 o c reference to frequency @ 25 o c ppb +/-30 f-508 -40 o c to +85 o c reference to frequency @ 25 o c ppb +/-50 +/-5% of supply voltage ppb +/-10 stability +/-5% of load change ppb +/-10 after 7 days of operation ppb/day 2 1 st year ppb/year 200 10 to <12mhz ppb/10year 1000 12 to <16mhz ppb/10year 1500 aging 16 to 20mhz ppb/10year 2000 allan deviation tau = 1 second 2 x 10 -10 @ 10hz dbc/hz -100 @ 100hz dbc/hz -130 @ 1khz dbc/hz -140 @ 10khz dbc/hz -145 phase noise @ 100khz dbc/hz -150 efc (0v to vdd) a reference to nominal frequency sufficient to compen sate 10 years aging fixed frequency f initial accuracy reference to nominal frequency ppm -1.0 +1.0 g-sensitivity test at 10g sine vibration at 100hz /g 1 x 10 -9
ex-240 evacuated miniature oven controlled crystal oscillator emxo tm vectron international - 267 lowell road, hudson, nh 03051 - tel: 1-88-vectron-1 - web: www.vectron.com - 2 - environmental conditions (designed to meet) ? mechanical shock (survive): mil-std-202, test met hod 213, condition e (1000g, 0.5msec) ? vibration random (survive): mil-std-202, test met hod 214, condition i-h (20grms, 3 minutes/axis) ? vibration sine (survive): mil-std-202, test metho d 204, condition d (20grms, 20 minutes/axis) ? thermal shock (survive): mil-std-202, test method 107, condition a-2 (50 cycles, -55 o c to +85 o c) package outline ordering information pin function pin # with efc fixed frequency 1 efc no connection 2-4 no connection (internal use only) no connection (internal use only) 8 case/gnd case/gnd 9 output output 13-15 no connection no connection 16 supply supply pin numbers are for reference only. they do not app ear on unit 150 183 220 60s 60-90s 45-60s time (s) temperature ( o c) reflow profile reflow profile ex 240 c a d 5 0 8 a 12.8000 ex = emxo package 240 supply voltage d = 3.3 vdc +/-5% c = 5.0 vdc +/-5% output a = cmos g = +0dbm sine h = +3dbm sine temperature & stability c-208 = +/-20 ppb over -0 o c to +70 o c d-308 = +/-30 ppb over -20 o c to +70 o c f-508 = +/-50 ppb over -40 o c to +85 o c other options a = electrical frequency control (efc) f = fixed frequency output frequency 10.0000 mhz 12.8000 mhz 13.0000 mhz 16.3840 mhz 20.0000 mhz mhz - - - -
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