TCXO Temperature Compensated Crystal Oscillators for COSPAS-SARSAT emergency beacon 10.0, 12.688375, 12.688656, 12.688750, 12.80, 20.0, 25.0, 26.0, 30.0 & 32.0 MHz TX7-705CM-SQ-CoSa (7.0 x 5.0 mm) 10.0, 12.678303, 12.80, 16.3840, 20.0 25.0 & 26.0 MHz TX7-503CM-SQ-CoSa (5.0 x 3.2 mm) Frequency stability: vs. temperature reference to (FMAX+FMIN)/2 vs. supply voltage changes reference to frequency at nominal supply vs. load changes reference to frequency at nominal load vs. aging ≤ ±0.2 ppm ≤ ±0.2 ppm -40 ~ +55 °C -20 ~ +55 °C ≤ ±0.05 ppm ±5 % ≤ ±0.05 ppm ±5 % ≤ ±1.0 ppm ≤ ±3.0 ppm 1 year 10 years Frequency tolerance @ +25 °C ≤ ±0.5 ppm Frequency tolerance after reflow ≤ ±1.0 ppm Allan variance (ADEV) Medium-term stability: Mean slope ∆F/dt after 15 min power-up: steady state during temperature ramp Residual ∆F (rms) from slope < 1 x 10 Class 1 beacon Class 2 beacon st τ=1s -10 IAW C/S T.007 and C/S IP TCXO ≤ ±0.7 ppb/min ≤ ±1.7 ppb/min ≤ 2.0 ppb T = constant ∆T/dt = ± 5 °C/h over 18 points +3.3 V ±5 % Supply current 4 mA Max. Output signal CMOS Output level VOH > 0.9 x Vdc Output load 15 pF ±5 % Symmetry (duty cycle) Tri-state function 45 % ~ 55 % Input ≥ 2.3 V or open Input ≤ 0.9 V or GND -40 ~ +55 °C -20 ~ +55 °C @ ½ Vdc Output oscillation Output high impedance Class 1 beacon Class 2 beacon Supply voltage (Vdc) Operating temperature range Storage temperature range -55 ~ +125 °C Packing units tape & reel TX7-705CM-SQ-CoSa 500 or 1’000 pieces TX7-503CM-SQ-CoSa Pin function Pin function # 1 # 5 # 6 # 9 # 10 #1 #4 #5 #6 #8 Do not connect GND Output Tri-state Vdc Do not connect GND Output Tri-state Vdc Do not connect: #2, #3, #4, #7 & #8 Do not connect: #2, #3 &, #7 Solder pattern Solder pattern Additionally used components 16 Feb. 15 VOL < 0.1 x Vdc • • 406 MHz RF SAW filter 121.50 MHz accurate, low power consumption clock oscillator Made in Switzerland Page 2 of 4 TCXO Temperature Compensated Crystal Oscillators for COSPAS-SARSAT emergency beacon Medium term stability Frequency stability measurement procedure according the COSPAS/SARSAT T.001 Note #1: Tmin Tmin TON Tmeas = -40 °C (Class 1 beacon) = -20 °C (Class 2 beacon) = beacon turn-ON time after 2 hours “cold soak” = start time of frequency stability measurement (TON + 15 min) Note: #2 The 2 h and 1 h warm-up and stabilisation times are for type approval test of complete beacon. For testing of TCXO these times may be shortened accordingly. Test data: (Example) Frequency stability vs. temperature ≤ ±0.2 ppm: over -40 ~ +55 °C over -20 ~ +55 °C for Class 1 beacon for Class 2 beacon Mean slope ∆F/dt after 15 min power-up: steady state: during temp. ramp ≤ ±0.7 ppb/min by T = constant ≤ ±1.7 ppb/min for ∆T/dt = ± 5 °C/h Residual ∆F (rms) from slope: over 18 points 16 Feb. 15 ≤ 2.0 ppb Made in Switzerland Page 3 of 4 TCXO Temperature Compensated Crystal Oscillators for COSPAS-SARSAT emergency beacon Phase noise Short term stability (ADEV) Environmental Reference STD. Test condition Vibration sinusoidal IEC 60028-2-6 IEC 60679-1-5.6.7 Shock IEC 60028-2-27 IEC 60679-1-5.6.8 Solder ability IEC 60028-2-20 IEC 60028-2-58 IEC 60679-5.6.3 Test Fc, 30 min per axis 10 Hz – 55 Hz with 0.75 mm, 55 Hz – 2 kHz with 10 g Test Ea, 3 x per axis, 100 g, 6 ms half sine pulse Test Ta (235 ±2) °C Method 1 Test Tb Method 1A, 5 s QuartzCom, more than frequency QuartzCom AG Bischmattstrasse 11 CH 2544 Bettlach Switzerland 16 Feb. 15 Fax Tel E-Mail +41 32 644 24 05 +41 32 644 24 00 [email protected] www.quartzcom.com Made in Switzerland Page 4 of 4