euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 1460 230000 fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk stratum iii oscillators standard leaded package frequency range from 10mhz to 40mhz operating temperature range, -20 to +70c operable temperature -30 to +75c supply voltage 3.3 volts eqax-m20s outlines and dimensions ocxo with stratum iii stability (acs 8510 chipset) description the euroquartz eqax-m20s ocxo conforms to iec60679-1, stratum iii, providing a low-noise, stable and reliable source of clock signals. features specification frequency range: 10.0mhz to 40.0mhz standard frequency: 12.800mhz frequency stability initial tolerance: 500ppb @+25c vs. temperature: 280ppb -20~+70c vs. supply voltage var: 50ppb vs. load change: 20ppb long term ageing (1st year): 0.8ppm (@40c after 30 days) long term stab. (15 years): 4.6ppm rf output signal waveform: hcmos load: 15pf rise/fall time: 10ns maximum symmetry (duty cycle): 60%/40% start-up time: 4ms supply voltage minimum: +3.13 volts typical: +3.30 volts maximum: +3.47 volts current consumption: 300ma maximum (steady state) 800ma during warm-up operable temperature range: -30~+75c storage temperature range: -40~+85c enclosure: as drawing weight: 5gm packing type: bulk (tray pack) esd sensitivity: 1500v minimum (iec6100-4-2) 1 nc not connected 7 gnd ground 8 rf out rf output 14 vs supply voltage pad no. symbol function pad connections visual inspection, dimensions sealing tests solderability, resistance to soldering heat shock bump free fall vibration, sinsoidal rapid change of temperature dry heat damp heat, cyclic cold climatic sequence damp heat, steady state endurance tests, - ageing - extended ageing 2-17 2-20 2-27 2-29 2-32 2-6 2-14 2-2 2-30 2-1 1-7 2-3 4.5 4.6 4.8.2 4.8.3 4.8.8 4.8.6 4.8.9 4.8.7 4.8.5 4.8.11 4.8.12 4.8.13 4.8.14 4.8.15 4.9.1 4.9.2 enclosure styles as in iec 60122-3, if applic. gross leak: test qc fine leak: test qk test ta (2355c), method 1 test tb, method 1a, 5s test ea, 3x per axis 100g, 6ms 1/2sine test eb, 4000 bumps/ axis, 40g, 6ms test ed, procedure 1, 2 drops from 1m ht. test fc, 30 min/axis, 10hz-55hz, 0.75mm; 55hz -2khz, 10g test na, 10 cycles at extremes of operating temperature range. test ba, 16 h at upper temperature. test db variant 1 severity b, 55c/95%rh test aa, 2h at lower temperature indicated by climatic category. sequence of 4.8.11, 4.8.12 and 4.8.13 test ca, 56 days 30 days @ 85c 1kh, 2kh, 8kh, @85c test iec 60068 part . . iec 61178-1 clause . . environmental test conditions ordering code to order, specify as follows: frequency - model example: 12.800mhz eqax-m20s 1 7 8 14
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