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 emv8gt tcxo description 8 pin dil, hermetically-sealed package wide frequency range: 27.0mhz to 200.0mhz supply voltage 3.3 volts frequency stability from 1ppm over -30 to +75c rohs compliant emv8gt series tcxos are packaged in an 8 pin dil hermetically sealed 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. emv8gt - outlines and dimensions stability (ppm) 0.5 1.0 1.5 2.0 2.5 3.0 temp. range (c) 0 ~ +50 p p p p p p -10 ~ +60 ask p p p p p -20 ~ +70 x p p p p p -30 ~ +75 x p p p p p -40 ~ +85 x x x ask ask p p = available, x = not available, ask = call technical sales specification product series code tcxo: emv8gt vctcxo: vemv8gt frequency range: 27.0mhz to 200.0mhz output waveform: squarewave, hcmos initial calibration tolerance models without trimmer: <2.0ppm models with trimmer: <1.0ppm standard frequencies: 30.0, 32.768, 38.880, 40.0, 50.0, 54.0, 64.0, 65.536, 77.76, 80.0, 128.0, 160.0 and 200.0mhz ( partial list ) operating temperature range: see table mechanical frequency tuning: 3.0ppm minimum 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 ) supply voltage: +3.3 volts output logic levels: logic high: 90% vdd min. logic low: 10% vdd max. current consumption: 40ma maximum rise and fall times: 10ns typical duty cycle: 50%10% standard, start-up time: 5ms typical, 10ms max. current consumption: see table below output load: 15pf storage temperature: -55~+125c part numbering schedule example: emv8gt33-200.00-2.5/-30+75 supply voltage 33 = 3.3 vdc frequency (mhz) stability over otr (ppm) operating temperature range (otr) (c) lower and upper limits series description tcxo = emv8gt* vctcxo = vemv8gt 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: 2m minimum modulation bandwidth: 25khz minimum linearity: 10% maximum vemv8gt voltage control specification frequency stability offset 10hz 100hz 1khz 10khz 100khz part = emv8gt33 at 77.760mhz (dbc/hz) -80 -110 -135 -130 -132 at 155.520mhz (dbc/hz) -80 -110 -125 -120 -125 ssb phase noise at 25c * note, 'g' indicates rohs compliant part cmos 8 pin dil, 'v' group 27.0mhz to 200.0mhz
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