vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com vmem military clock oscillator features applications description vmem vectrons vmem high shock resistant clock oscillator is the next generation ruggedized silicon mems based stabilized square wav e generator with a cmos output, operating off a +1.8, +2.5, +2.7 or +3.3vdc supply. the vmem uses an internal compensation scheme to improve tempera ture stability which produces temperature performance equivalen t to quartz based products. silicon resonator ? excellent g sensitivity performance ? high shock survivability ? +1.8v, +2.5v, +2.7v or +3.3v operation ? cmos output ? output frequencies to 150 mhz ? enable/disable for board test and debug ? -20/70c or C40/85c operating temperature ? industry standard 5.0 x 3.2, 3.2 x 2.5 or 2.5 x 2.0 smd footprints ? product is compliant to rohs directive and fully compatible ? with lead free assembly smart munitions ? projectile electronics ? missiles ? high shock & vibration applications ? page1
vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com description page2 performance specifi cations specifi cations table 1. electrical performance parameter symbol min typical maximum units frequency f o 1.000 150.000 mhz stability (ordering option) f/f o 50, 100 ppm operating temperature (ordering option) t op -20/70 or -40/85 c operating supply voltage 1 (ordering option) v dd 1.65 2.3 2.45 3.0 1.8 2.5 2.7 3.3 1.95 2.7 2.95 3.6 v v v v supply current, output enabled 1 to 40mhz 40.01 to 80mhz 80.01 to 125mhz 125.01 to 150mhz i dd 3 4 5 6 6 8 10 12 ma ma ma ma supply current, output disabled i dd 1ua output logic levels output logic high 2 output logic low 2 v oh v ol 0.8*v dd 0.2*v dd v v output load 15 pf output rise/fall time 2 t r t f 1.3 1.3 3 3 ns ns duty cycle 3 sym 45/55 % period jitter 4 , rms, 80mhz output peak to peak 9 75 ps ps start-up time t su 310 ms enable/disable 5 output enabled output disabled v ih v il 0.75*v dd 0.25*v dd v v fig 1: test circuit fig 2: output waveform t r t f v oh v ol 50% on time period i dd v dd v c i c 15pf 4 12 3 .1f + - + - a 0.01uf and a 0.1uf capacitor should be located as close to the supply as possible (to ground) is recommended. 1] figure 2 defi nes these parameters. figure 1 illustrates the opera ting conditions under which these parameters are tested and specifi ed. 2] duty cycle is measured defi ned as on time/period. 3] measured using a wavecrest sia3300c, 90k samples 4] output will be active if enable/disable is left open. 5]
vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com page3 table 2. absolute maximum ratings parameter symbol ratings unit power supply v dd -0.3 to +4.0 v cmos input voltage e/d -0.3 to (v dd +0.3) v junction temperature t j 150 c storage temperature t str -62 to 125 c soldering temperature / duration t peak / t p 260 / 40 c / sec under normal operation the e/d is set to a logic high state or logic low state. when e/d is set to a logic low, the oscillator stops and the output is in a high impedance state. this helps reduce power consumption as well as facilitating board testing and troubleshooting. when e/d is set to a logic high state, the oscillator produces an output. leaving the enable/disable pin open results in an active state with an output frequency. enable/disable functional description outline drawing, 5.0x3.2 option suggested pad layout contact pads are gold fl ash over palladium over nickel figure 3, 5.0x3.2 package drawing table 3. pin out pin symbol function 1 e/d enable/disable 2 gnd electrical ground 3f o output frequency 4v dd supply voltage units: mm (inches)
vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com page4 outline drawing, 3.2x2.5 option suggested pad layout outline drawing, 2.5x2.0 option suggested pad layout contact pads are gold fl ash over pallladium over nickel figure 4, 3.2x2.5 package drawing contact pads are gold fl ash over palladium over nickel figure 5, 2.5x2.0 package drawing units: mm (inches) units: mm (inches)
vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com page5 reliability the vmemxq qualifi cation tests were performed per mil-prf-55310 & the following environmental tests table 4. environmental compliance parameter conditions mechanical shock mil-std-202, method 213, condition f except 30,000g, 0.1 ms mechanical vibration mil-std-883, method 2007, condition c, 100g thermal shock mil-std-202, method 107, condition b ambient pressure operating mil-std-202, method 105, condition e gross and fine leak mil-std-883, method 1014, condition a2 & c resistance to solvents mil-std-202, method 215 salt atmosphere mil-std-883, method 1009, condition a moisture resistance mil-std-202, method 106 low temperature storage life jesd22-a119, condition b handling precautions table 5. esd ratings model minimum human body model 2000v charged device model 500v machine model 200 v although esd protection circuitry has been designed into the the vmemxq, proper precautions should be taken when handling and mounting. vi employs a human body model and a charged-device model (cdm) for esd susceptibility testing and design protection evaluation. esd thresholds are dependent on the circuit parameters used to defi ne the model. devices are built using lead free epoxy and can also be subjected to standard lead free ir refl ow conditions. figure 6 shows max temperatures and lower temperatures can also be used e.g. peak temperature of 220c. suggested ir profi le figure 6 table 6. refl ow profi le parameter symbol value preheat time ts-min ts-max t s 60 sec min, 260 sec max 150c 200c ramp up r up 3 c/sec max time above 217 c t l 60 sec min, 150 sec max peak temperature t p 255-260c time to peak temperature t 25c to peak 480 sec max time at peak temperature t p 20 sec max ramp down r dn 6 c/sec max
vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com page6 standard frequencies (mhz) 2.000 3.686 4.000 4.032 4.9152 5.000 6.000 7.3728 7.680 8.000 9.216 9.600 10.000 12.000 12.500 12.729 14.31818 14.746 16.000 16.128 17.000 20.000 21.000 21.500 22.000 23.000 24.000 25.000 26.000 27.000 29.4912 30.000 32.000 33.000 33.333 36.000 37.500 40.000 42.500 45.000 48.000 50.000 55.000 56.448 58.320 60.000 64.000 66.000 66.666 72.000 75.000 80.000 83.333 84.000 95.000 100.000 110.000 112.500 114.000 115.200 116.640 125.000 127.872 other frequencies available upon request. vmemxq - x 3 x - 25m0000000 product family ruggedized mems oscillator package size 5: 5.0x3.2mm 3: 3.2x2.5mm 2: 2.5x2.0mm voltage options b: +3.3vdc j: +2.7vdc g: +2.5vdc h: +1.8vdc electrical options 3: enable/disable, 45/55% duty cycle frequency (see above) in mhz stability options a: 100ppm, -20 to 70c b: 50ppm, -20 to 70c c: 100ppm, -40 to 85c d: 50ppm, -40 to 85c example: vmem2q-h3d-40m0000000 = 2.5x2.0, +1.8v, e/d, 45/55%, 50ppm over -40/85c with a 40.000mhz output ordering information disclaimer vectron international reserves the right to make changes to the product(s) and or information contained herein without notice. no liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such product(s) or information. rev: 10/16/2009 for additional information, please contact usa: vectron international 267 lowell road hudson, nh 03051 tel: 1.888.328.7661 fax: 1.888.329.8328 europe: vectron international landstrasse, d-74924 neckarbischofsheim, germany tel: +49 (0) 3328.4784.17 fax: +49 (0) 3328.4784.30 asia: vectron international 1f-2f, no 8 workshop, no 308 fenju road waigaoqiao free trade zone pudong, shanghai, china 200131 tel: 86.21.5048.0777 fax: 86.21.5048.1881
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