Oven Controlled Oscillators (OCXO)

More documents

Recommendations

Info

FREQUENCY CONTROL PRODUCTS M I N I A T U R E S U R F A C E M O U N T O C X O KEY FEATURES 10 to 26 MHz ± 0.25 ppm over -20 to 70°C up to 26 MHz APPLICATIONS Bases stations, frequency reference Function DFO S1 V control 1 GND 2 Output 3 Vcc 4 Please consult our application note about PCB design D F O S 1 - L H V ( 3 . 3 V ) TYPE DFO S1 REVISION PL01 CHECKED NE DATE 10.04.2008 PAGE 9.1±0.2 5.9 +0.1 -0.2 8.9 1.4 2.54 1.0 1.27 14.8±0.3 5.08 4 3 TYPE DFO S1-LHV Frequency Range 10 to 26 MHz Standard Frequencies 12.8, 13, 19.2, 20 & 26 MHz ELECTRICAL SPECIFICATIONS supply voltage 3.3 V ± 5 % supply power ( warm-up) @ 25°C ≤ 1.9 W; 1.7 W typ supply power ( steady state) @ - 20°C 0.7 W typ. supply power ( steady state) @ 25°C 0.4 W typ. output load HCMOS 15 pF or 2 TTL duty cycle @ 50% level 45/55...55/45 % rise/fall times (10 to 90 %) ≤ 5 ns high/low levels or output amplitude ≥ 2.8 V/ ≤ 0.3 V SSB phase noise (1 Hz B.W.) -85 dBc/Hz @ 10 Hz (Typical values at 19.2 MHz) -115 dBc/Hz @ 100 Hz -140 dBc/Hz @ 1 kHz -150 dBc/Hz @ 10 kHz warm-up time @ 25°C ≤ 5 min to reach ± 100 ppb FREQUENCY STABILITY detailed tolerances [ ppm ] type temperature range model code temperature stability versus: Vcc ± 1 % load ± 10 % ageing calibration @ 25°C all types 0 to 70°C B27 -20 to 70°C* C258 ≤ ± 0.2 ≤ ± 0.25 ≤ ± 0.02 ≤ ± 0.01 ≤ ± 0.5 by control voltage remark ageing is 1 st year at 25°C voltage control on pin 1 (positive slope ) ≥ ± 4 ppm, ≤ ± 10 ppm relative to frequency at Vco = 1.65 V sufficient for 5 years calibration 1.65 V ± 1.35 V Input impedance ≥ 50 kΩ, ORDERING CODE type + option code + frequency + model code Example DFO S1-LHV 20.000 MHz C17 1 5.08 2 PC board footprint
FEATURES 10 MHz Standard package Very high stability APPLICATIONS Instrumentation, reference Function DFO S4 Output 1 <strong>Oven</strong> alarm output 2 GND 3 V ref. 4 Voltage control 5 E/D 6 Vcc 7 FREQUENCY CONTROL PRODUCTS H I G H P E R F O R M A N C E S M D O C X O T Y P E D F O S 4 - S TYPE DFO S4-S Frequency 10 MHz ELECTRICAL SPECIFICATIONS supply voltage 12 V ± 5 % supply current (no load) @ 25°C ≤ 100 mA supply current during warm up ≤ 350 mA output load SINE WAVE, 50 Ω output level ≥ + 5 dBm, ≤ +10 dBm harmonics -20 dBc SSB phase noise (1 Hz B.W.) -145 dBc/Hz @ 100 Hz -150 dBc/Hz @ 1 kHz -150 dBc/Hz @ 10 kHz -150 dBc/Hz @ 100k Hz Enable/disable (pin 6) low = disable, high = enable <strong>Oven</strong> alarm output (pin 2) low = alarm, high = oven ready V ref. (pin 4) 5 V warm up time ≤ ± 10 ppb in 10 min @ 25°C FREQUENCY STABILITY detailed tolerances after 30 days of operation temperature model stability versus : type range code Temperature Vcc ± 5 % Load ± 5 % Daily ageing Yearly ageing Calibration @ 25°C all types -10 to 60°C D5 ≤ ± 5 ppb ± 0.5 ppb typ. ≤ ± 0.5 ppb ≤ ± 0.5 ppb ≤ ± 30 ppb ≤ ± 50 ppb Long term ageing ≤ ± 500 ppb over 15 years Short term stability (Allan variance) 5 x 10 -12 for Ƭ = 1 sec., 1 x 10 -11 for Ƭ = 10 sec. OPTIONS CODE external voltage V 0 V to Vref centered @ 2.5 V ≥ ± 1 ppm ORDERING CODE type + option code + frequency + model code + voltage Example DFO 25-S 10 MHz D5/12 TYPE DFO S4-S REVISION 00 CHECKED NE DATE 19.05.2008 PAGE XX 2.5 H±0.2 8.9 8.9 2.5 20.4 3.0 4.0 20.4 25.4±0.2 22.2±0.5 1.2 7.6 1 2 23.6 7 6 5 3 4 7.62 17.8 H = 11mm PC board footprint
Page 1 and 2: OCXO's Oven Controlled Oscillators
Page 3: FREQUENCY CONTROL PRODUCTS FEMTO BA
Page 7 and 8: FREQUENCY CONTROL PRODUCTS STRATUM

Oven Controlled Oscillators (OCXO)

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?