euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 (0)1460 230000 fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk euro quartz cmos, 14 pin dil, mhz range em14gt tcxo description 14 pin dil industry-standard package wide frequency range: 1.25mhz to 156.0mhz supply voltage 2.8, 3.0, 3.3 or 5.0 volts frequency stability from 1ppm over -30 to +75c rohs compliant em14gt series tcxos are packaged in the industry-standard 14 pin dil package. with squarewave (cmos) output, tolerances are available from 1.0ppm over -30 to +75c. the part has a 0.01 m f decoupling capacitor built in. em14gt - outlines and dimensions specification product series code tcxo: em14gt vctcxo: vem14gt frequency range: 1.25mhz to 156.0mhz output waveform: squarewave, hcmos initial calibration tolerance: <1.0ppm at +252c standard frequencies: 10.0, 12.8, 13.0, 14.4, 15.36, 16.384, 19.2, 19.440, 19.68, 25.0, 20.0, 27.0, 38.880, 40.0, 77.760, 125.0, 155.520 ( partial list ) operating temperature range: see table frequency stability vs. ageing: 1.0 ppm max. first year vs. voltage change: 0.3 ppm max. 5% change vs. load change: 0.3 ppm max. 10% change vs. reflow (smd type): 1.0ppm max. for one reflow ( measured after 24 hours ) mechanical frequency tuning: 3ppm minimum supply voltage: +2.8, +3.0, +3.3 or +5.0v ( see table) output logic levels: logic high: 90% vdd min. logic low: 10% vdd max. rise and fall times: 10ns max. duty cycle: 50%10% standard, 50%5% option start-up time: 5ms typical, 10ms max. current consumption: see table below output load: 15pf storage temperature: -55~+125c part numbering schedule example: em14gt33-38.880-2.5/-30+75 supply voltage 28 = 2.8vdc 3 = 3.0vdc 33 = 3.3 vdc 5 = 5.0 vdc frequency (mhz) stability over otr (ppm) operating temperature range (otr) (c) lower and upper limits. series description tcxo = em14gt vctcxo = vem14gt control voltage: standard = +1.51.0volts for all input voltages. (contact technical sales if +2.52.0 volts is required.) frequency deviation: 6.0 ppm min. (vcon = +4.5v1.0v) slope polarity: positive (increase of control voltage increases output frequency.) input impedance: 50k minimum modulation bandwidth: 20khz minimum linearity: 10% maximum vem14gt voltage control specification offset 10hz 100hz 1khz 10khz 100khz part = em14gt33 at 10.0mhz (dbc/hz) -115 -135 -148 -152 -155 at 155.250mhz (dbc/hz) -72 -110 -125 -132 -125 ssb phase noise at 25c input voltage/ frequency +2.8v +3.0 +3.3v +5.0 v 8.192mhz 2ma 2ma 5ma 10.0mhz 3ma 4ma 7ma 77.760mhz 14ma 17ma 32ma 155.520mhz 26ma 35ma 50ma input voltage & current consumption frequency stability (ppm) 0.5 1.0 1.5 2.0 2.5 temperature range (c) 0 ~ +50 ask p p p p -10 ~ +60 x p p p p -20 ~ +70 x x p p p -30 ~ +75 x x x p p p -40 ~ +85 x x x x p p = available, x = not available, ask = call technical sales frequency stability 1.25mhz to 156.0mhz
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