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 7 x 5 x 2.3mm smd, mhz range em572t tcxo description miniature 7 x 5 x 2.3mm smd 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 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 input voltage/ frequency +2.8v +3.0 +3.3v +5.0 v 8.192mhz 2ma 2ma 5ma 10.000mhz 3ma 4ma 7ma 24.576mhz 5ma 6ma 10ma 60.000mhz 11ma 14ma 24ma 150.00mhz 19ma 23ma 36ma input voltage & current consumption specification product series code tcxo: em572t (eml572t >40mhz) vctcxo: vem572t (veml572t >40mhz) frequency range: 1.25mhz to 156.0mhz output waveform: squarewave, hcmos initial calibration tolerance: <2.0ppm 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 ( ) operating temperature range: 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 ( ) supply voltage: +2.8, +3.0, +3.3 or +5.0v ( 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: output load: 15pf storage temperature: -55~+125c part numbering procedure example: em572t33-38.880-2.5/-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 = em572t* vctcxo = vem572t* control voltage: standard = +1.51.0volts for all input voltages. frequency deviation: 5 ppm (vcon = +1.51.0v) slope polarity: positive input impedance: 1m minimum modulation bandwidth: 20khz minimum 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 offset / dbc / hz 10hz 100hz 1khz 10khz 100khz em572t33 10.000mhz -96 -122 -138 -145 -150 em572t33 77.760mhz -74 -105 -120 -124 -120 em572t33 155.52mhz -68 -96 -110 -117 -112 ssb phase noise at 25c, 15pf 1.25mhz to 156.0mhz * above 40mhz part numbers are eml572t or veml572t to indicate use of a phase locked loop (pll) circuit above this frequency.
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