ocxo (o ven c ontrolled c rystal o scillators) +5.0v; +12v OC22T series hcmos square wave mercury since 1973 mercury www.mercury-crystal.com taiwan: tel (886)-2-2406-2779, fax (886 )-2-2496-0769, e-mail: sale s-tw@mercury-crystal.com u.s.a.: tel (1)-909-466-0427, fax (1 )-909-466-0762, e-mail: s ales-us@mercury-crystal.com mercury page 1 of 2 date: july 20, 2006 rev. 0 mercury OC22T is 50.8x50.8 mm 7 pin solder sealed metal pacakge with 38.1x38.1 mm pin-to-pin spacing high stability low aging ocxo. sc cut crystal is standard for oc22 . 0.4 ppb stability and 150 ppb total aging over 10 years make the oc22 ideal for base stations, digital switching , instrumentation and frequency synthesiz ers. 50 ohm load sine output is available as oc22e series. general specifications ( 10 mhz at+25c, at specified vcc and +2.5 v vcon) output wave form hcmos square wave. wave form code is ? t ? frequency range 5.0 mhz ~20.0 mhz type of crystal cut used at -cut. use ? a ? for crystal code or sc- cut: use ? s ? for crystal code. sc has better performance but higher cost. see technical note tn-031. supply voltage (vcc) +5.0 v d.c 5% (voltage code is ? 5 ?); +12.0 v d.c 5% (voltage code is ? 12 ?) initial calibration tolerance 0.1 ppm max. at time of shipment; vcon=+2.5v, at +25c best stability 0c to +60c -20c to +70c -40c to +85c for at crystal 50 ppb 0.1 ppm 0.2 ppm operating temperature range (custom spec. on request) for sc crystal 0.4 ppb 5 ppb 15 ppb aging (after 72 hours of continuous operation) at :3 ppb max./day; 0.5 ppm max./first year;3 ppm max. over 10 years. sc : 0.5 ppb max./day; 50 ppb max./first year;150 ppb max. over 10 years. supply voltage 5% variation 1 ppb max. load 5% variation: 1 ppb max. frequency stability vs warm-up time (at +25c) at : 1 minute max. within 0.2 ppm of its reference frequency. sc : 5 minute max. within 10 pp b of its reference frequency. freq. deviation range at : 5 ppm min. 20 ppm max.; sc : 0.5 ppm min, 1 ppm max. referenced to fo at +25c and over operating temperature range. control voltage range 2.5 v 2.0 v transfer function positive: increasing control voltage increases output frequency. voltage control on pin 1 (efc) (electronics frequency tuning) input impedance 100 k ohms min. efc linearity 20% max. power power dissipation (at +25c) 1.0 watts max. at steady-state; 4.5 watts max. at turn-on. load (fan out) 15 pf hcmos max. duty cycle 50% 5%. (measured at 50%vcc) output voltage logic high (v oh ) +4.5 v min. output voltage logic low (v ol ) +0.5 max. rise and fall time 5 ns max. (measured at 20% ? 80% of waveform) reference voltage output +4.0 v d.c 0.3 v d.c . or custom. offset 1 hz 10 hz 100 hz 1 khz 10 khz 10 mhz at-cut xtal -75 dbc -100 dbc -130 dbc -140 dbc -150 dbc output phase noise 10 mhz sc-cut xtal -90 dbc -120 dbc -140 dbc -150 dbc -150 dbc storage temperature -55c to +125c shock 2000 g?s, 0.3 ms ? sine vibration 10 to 2000 hz / 10 g?s
ocxo (o ven c ontrolled c rystal o scillators) +5.0 v OC22T5 series hcmos square wave mercury since 1973 mercury page 2 of 2 da te: july 20, 2006 rev. 0 + - 0.1uf v a - + vcc1 - + vcon bottom view oscilloscope frequency counter 15 pf 50% 20% 80% tr tf t2 t1 duty cycle = t1 t2 *100% * * include probe, fixture and stray capacitances - + vcc2 OC22T test circuit OC22T series package dimensions and pin connections : unit mm part number format and example : example : OC22T5s-10.000-0.01/-20+70 oc 22 t 5 s ? 10.000 ? 0.01 -20+70 n o p q r dash s dash t slash u n : ? oc ? product prefix for ocxo o : package type. ? 22 ? for oc22 package p : output wave form code. ? t ? for hcmos square wave output.. q : supply voltage code. ? 5 ? for +5.0v; ? 12 ? for +12.0v r : crystal type. use ? a ? for at-cut crystal; use ? s ? for sc-cut crystal. s : frequency in mhz; t : frequency stability in ppm; u : operating temperature range: -20 c to +70 c in this case.
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