TCVCXO Specification Part No. + Packaging: LFTVXO070167Cutt Customer Part: Description The IQXT-270-9 Temperature Compensated Crystal Oscillator (TCXO) employs an analogue ASIC for the oscillator and a high order temperature compensation circuit in a 2.0 x 1.6mm size package. Model IQXT-270-9 Model Issue number 1 Frequency Parameters Frequency 19.20MHz Frequency Tolerance 1.00ppm 0.50ppm Frequency Stability Operating Temperature Range -30.00 to 85.00C Ageing 1ppm max per year at 25C Frequency Tolerance: Offset from nominal frequency measured at 25C 2C. Reflow Shift (two consecutive reflows as per profile after 1 hour relaxation at 25C): 1ppm max Outline (mm) Frequency Stability: Referenced to the midpoint between minimum and maximum frequency value over the specified temperature range. Control voltage set to midpoint of control voltage (note 1). Frequency Slope (minimum of one frequency reading every 2C, over -10 to 60C - note 1): 0.05ppm/C max Frequency drift (calculated from frequency slope with temperature varied at a maximum of 1.92C/min (0.032C/s) over -10C to 60C, note 5): 1.6ppb/sec max Frequency Slope (minimum of one frequency reading every 2C, over -30C to -85C, note 1): 0.1ppm/C max Frequency drift (calculated from frequency slope with temperature varied at a maximum of 0.96C/min (0.016C/s) over -30C to 85C, note 5): 1.6ppb/sec max Small thermal cycle frequency slope (measured at 0.5C intervals over any 5C heating and 5C cooling cycle, at a minimum rate of 1C/minute within the operating temperature range, note 6): 50ppb/C max Pb-Free Reflow Small thermal cycle hysteresis (difference in frequency measurements over any 5C heating and 5C cooling cycle, at a minimum rate of 1C/minute within the operating temperature range): 50ppb pk-pk max Supply Voltage Variation (5% change at 25C): 0.1ppm max Load Variation (10% change at 25C): 0.2ppm max Electrical Parameters 1.8V 5% Supply Voltage Current Draw 2.000mA Supply Current (at Vs max - note 2) Frequency Adjustment Pulling 15.6ppm to 24ppm Control Voltage 1.4V 1.0V Input Impedance 500k min Control voltage range: the nominal control voltage value is midway between the minimum and maximum. Voltage control should not exceed the supply voltage +0.2V or GND. Linearity (deviation from straight line curve fit): 10% max Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Email: info iqdfrequencyproducts.com Germany: 0800 1808 443 USA: +1.760.318.2824 Web: www.iqdfrequencyproducts.com Printed on 4 Aug 21 22:26 using Part Data Sheet V1.0018 Page 1 of 3TCVCXO Specification Part No. + Packaging: LFTVXO070167Cutt Customer Part: Output Details Output Compatibility Clipped Sine Drive Capability 10k//10pF 10% Output: DC coupled (note 3) Output Voltage Level (at Vs min - note 2): 0.8V pk-pk min Noise Parameters Phase Noise (typ 25C): -64dBc/Hz 1Hz -93dBc/Hz 10Hz -118dBc/Hz 100Hz -137dBc/Hz 1kHz -149dBc/Hz 10kHz -151dBc/Hz 100kHz Phase Noise (max 25C): -57dBc/Hz 1Hz -86dBc/Hz 10Hz -111dBc/Hz 100Hz -133dBc/Hz 1kHz -144dBc/Hz 10kHz -148dBc/Hz 100kHz Environmental Parameters Shock: MIL-STD-202 M213 (note 4): Half sine-wave acceleration of 3000G peak amplitude, duration 0.3ms, velocity 12.3ft/s. Moisture Resistance: MIL-STD-202 M106g (note 4): 1000 hours at 85C, 85% relative humidity. Biased. Thermal Cycling: JESD22 Method JA-104C (note 4): 1000 temperature cycles, where each cycle consists of a 25 minutes soak time at -40C followed by a 25 minute soak time at 85C, with a 60 second maximum transition time between temperatures. Air to air transition. Vibration: JESD22-B103-B (also see note 4): 10G peak acceleration for 20 minutes 12 cycles in each of the 3 orientations, swept from 10-2000Hz. Storage Temperature Range: -40 to 85C Manufacturing Details Maximum Process Temperature: 260C (40secs max) Note 1: Parts should be shielded from drafts causing unexpected thermal gradients. Temperature changes due to ambient air currents can lead to short term frequency drift. Note 2: Specified for the load stated in Output Details above, at 25C. Note 3: External AC coupling capacitor required 1nF or greater recommended. Note 4: Frequency shift of 1ppm max after environmental conditions. Note 5: Frequency drift rate is calculated from the equation ppb/s=C/s x ppb/C Note 6: Discard the first 0.5C interval of each heating and cooling cycle. Compliance RoHS Status (2015/863/EU) Compliant REACh Status Compliant MSL Rating (JDEC-STD-033): Not Applicable Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Email: info iqdfrequencyproducts.com Germany: 0800 1808 443 USA: +1.760.318.2824 Web: www.iqdfrequencyproducts.com Printed on 4 Aug 21 22:26 using Part Data Sheet V1.0018 Page 2 of 3