rev. x01 preliminary specification electrical characteristics parameter sym conditions min typical max unit power requirements power supply vcc 5% 546l 5% 546s 3.135 4.75 3.30 5.0 3.465 5.25 vdc vdc supply current icc vcc=max. (3.3vdc) std. load (5.0vdc) 12 15 note 1 ma ma frequency stabilities center frequency f nom 1.25 38.88 20 19.44 12.8 10 38.88 mhz initial tolerance f cal ta=+25 c 0.75 ppm freq. vs. temp. d f/ d temp 0.25 ppm freq. vs. voltage d f/ d vcc vcc 5% 0.1 ppm freq. vs time (aging) d f/ d time 20 years 2.5 ppm 24 hour holdover stability d f/24hr inclusive of temp., supply variation and 24hrs. aging 0.30 0.37 ppm total free- running accuracy d f/life all cond. for 20 yrs. (ref. to f nom ) 4.6 ppm waveform: cmos output symmetry sym @ 50% level 40 50 60 % amplitude vo logic ? 1 ? logic ? 0 ? 0.8vcc 0.3 v v rise/fall times tr, tf 20% to 80% 6 nsec load rl output to ground 10k w ?? 15pf phase noise pn offset = 100hz -115 dbc/hz 1khz -130 dbc/hz 10khz -140 dbc/hz 100khz -150 dbc/hz phase jitter 12khz to 20mhz bandwidth 1.0 psec rms note 1: maximum current will vary with frequency model 546 ?vttn ? ? series stratum 3 tcxo frequency stability to stratum 3 of gr-1244 patented voltage tuned thermistor network very low phase jitter: < 1 psec +3.3vdc or +5.0vdc operation precision low aging ? at ? cut crystal compatible with semtech sets chipsets surface mount pkg. ? matches vectron z5 cts
rev. x01 preliminary specification model 546 ?vttn ? ? series stratum 3 tcxo storage temperature: -55 to +125 c reflow soldering: 30 sec. > 200 c, 240 c peak max. shock: 50 g ? s, 11 msec. pulse (3 shocks/axis) vibration: 10 g ? s peak, 10 to 500 hz case: high-temp fr-4 base, nickel/silver cover seal: non-hermetic environmental / mechanical specifications ordering information model 546 ___.________ example: 546sa-19.440 supply voltage l = +3.3vdc s = +5.0vdc oper. temp. range a = -5 to +50 c b = 0 to +70 c frequency in mhz pin # function 1 rf output 2 supply voltage 3 ground 4 no connect 5 ground 1 2 3 4 5 0.25 0.40 0.40 1.00 0.390 max 1.00 1.15 cts
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