euro quartz 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 tcxo hcmos 7 x 5 x 2.3mm smd, khz range em572t series description miniature 7 x 5 x 2.3mm smd package frequency range: 20.0khz to 52.7khz including 32.768khz supply voltage 3.3 or 5.0 volts frequency stability from 1ppm over -30 to +75c rohs compliant em572t series tcxos are packaged in a miniature 4 pad ceramic smd 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. em572t - outlines and dimensions specification product series code tcxo: em572t vctcxo: vem572t frequency range: 20.0khz to 52.7khz standard frequency: 32.768khz output waveform: squarewave, hcmos initial calibration tolerance: <2.0ppm at +252c operating temperature range: see table frequency stability vs. ageing: 1.0 ppm max. first year vs. voltage change: 0.2 ppm max. 5% change vs. load change: 0.2 ppm max. 10% change vs. reflow (smd type): 1.0ppm max. for one reflow ( measured after 24 hours ) 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: 10ms max. current consumption: see table below output load: 15pf storage temperature: -55~+125c control voltage: standard = +1.51.0volts for all input voltages. (contact technical sales if +2.52.0 volts is required.) frequency deviation: 5 ppm (vcon = +1.51.0v) slope polarity: positive (increase of control voltage increases output frequency.) input impedance: 1m minimum modulation bandwidth: 20khz minimum linearity: 10% maximum vem572t voltage control specification frequency stability (ppm) 0.5 1.0 1.5 2.0 2.5 temperature range (c) 0 ~ +50 p p p p p -10 ~ +60 p p p p p -20 ~ +70 p p p p p -30 ~ +75 ask p p p std p -40 ~ +85 x ask p p p p = available, x = not available, ask = call tech. sales std = standard frequency stability frequency +3.3 v 32.768khz 8.0ma 50khz 12ma current consumption part numbering procedure example: em572t33-32.768k-2.5/-30+75 supply voltage 33 = 3.3 vdc 5 = 5.0 vdc frequency (khz) stability over otr (ppm) operating temperature range (otr) (c) lower and upper limits. series description tcxo = em572t vctcxo = vem572t pad connections: 1. vctcxo: voltage control tcxo: not connected 2. ground 3. output 4. supply voltage
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