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 EMW38GT tcxo description through-hole package compatible with 14 pin dil frequency range: 200.01mhz to 800.0mhz supply voltage 3.3 volts frequency stability from 1ppm over -30 to +75c rohs compliant EMW38GT series tcxos are packaged in a through-hole package, pin compatible with 14 pin dil with trimmer. 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. EMW38GT - 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: EMW38GT vctcxo: vEMW38GT frequency range: 200.01mhz to 800.0mhz output waveform: squarewave, hcmos initial calibration tolerance: <2.0ppm at +252c standard frequencies: 200.0, 204.8, 311.04, 400.0, 409.6 and 622.08mhz ( partial list ) mechanical frequency tuning: 3ppm minimum operating temperature range: (s ee table) frequency stability ( see table ) 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: 65ma max. ( freq. dependant ) rise and fall times: 1.2ns typical duty cycle: 50%5% start-up time: 5ms typical, 10ms max. current consumption: see table below output load: 15pf storage temperature: -55~+125c part numbering schedule example: EMW38GT33-409.60-2.5/-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 = EMW38GT* vctcxo = vEMW38GT 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 vEMW38GT voltage control specification frequency stability offset 10hz 100hz 1khz 10khz 100khz part = EMW38GT33 at 622.080mhz (dbc/hz) -50 -77 -102 -115 -108 ssb phase noise at 25c *note: 'g' indicates part is rohs compliant cmos 14 pin dil compatible, 'w' group 200.0mhz to 800.0mhz
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