Part Data Sheet V1.00014
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Part No. + Packaging: LFTVXO070168Reel TCVCXO Specification Outline (mm) Pb-Free Reflow
Description
The IQXT-270-10 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. IQXT-270-10Model Model Issue number 1 Frequency Parameters Frequency 19.20MHz Frequency Tolerance ±1.00ppm Frequency Stability ±0.50ppm -30.00 to 85.00°COperating Temperature Range Ageing ±0.7ppm max per year at 25°C Frequency Tolerance: Offset from nominal frequency measured at 25˚C ±2˚C. Reflow Shift (two consecutive reflows as per profile after 1 hour relaxation at 25°C): ±1ppm max 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 2°C, over -10 to 60°C. Control voltage set to midpoint of control voltage, note 1): 0.05ppm/°C max Frequency drift (calculated from frequency slope with temperature varied at a maximum of 1.92°C/min (0.032°C/s) over -10°C to 60°C, note 5): 1.6ppb/sec max Frequency Slope (minimum of one frequency reading every 2°C, over -30°C to -85°C. Control voltage set to midpoint of control voltage, note 1): 0.1ppm/°C max Frequency drift (calculated from frequency slope with temperature varied at a maximum of 0.96°C/min (0.016°C/s) over -30°C to 85°C, note 5): 1.6ppb/sec max Small thermal cycle frequency slope (measured at 0.5°C intervals over any 5°C heating and 5°C cooling cycle, at a minimum rate of 1°C/minute within the operating temperature range, note 6): 50ppb/°C max Small thermal cycle hysteresis (difference in frequency measurements over any 5°C heating and 5°C cooling cycle, at a minimum rate of 1°C/minute within the operating temperature range): 50ppb pk-pk max Supply Voltage Variation (±5% change at 25°C): ±0.1ppm max Load Variation (±10% change at 25°C): ±0.2ppm max Electrical Parameters 2.85V ±0.15VSupply Voltage 1.50mACurrent Draw Supply Current (at Vs max - note 2) Frequency Adjustment Pulling ±15.6ppm to ±24ppm Control Voltage 1.4V ±1.0V Input Impedence 500kΩ 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: USA: +1.760.318.2824 France: 0800 901 383UK: +44 (0)1460 270200 Germany: 0800 1808 443 Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com Printed on 26 May 16 17:45 using Part Data Sheet V1.00014 Page 1 of 3
Part No. + Packaging: LFTVXO070168Reel TCVCXO Specification Output Details Output Compatability Clipped Sine Drive Capability 10kΩ//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 @ 25˚C): -64dBc/Hz @ 1Hz -93dBc/Hz @ 10Hz -118dBc/Hz @ 100Hz -137dBc/Hz @ 1kHz -149dBc/Hz @ 10kHz -151dBc/Hz @ 100kHz Phase Noise (max @ 25˚C): -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 85°C, 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 -40°C followed by a 25 minute soak time at 85°C, 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 85°C Manufacturing Details Maximum Process Temperature: 260˚C (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 25°C. 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 0.5°C interval of each heating and cooling cycle. Compliance CompliantRoHS Status (2011/65/EU) CompliantREACh Status MSL Rating (JDEC-STD-033): Not Applicable Sales Office Contact Details: USA: +1.760.318.2824 France: 0800 901 383UK: +44 (0)1460 270200 Germany: 0800 1808 443 Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com Printed on 26 May 16 17:45 using Part Data Sheet V1.00014 Page 2 of 3
Part No. + Packaging: LFTVXO070168Reel TCVCXO Specification Packaging Details Tape & reel in accordance with EIA-481-DPack Style: Reel Pack Size: 4,000 Alternative packing option available Sales Office Contact Details: USA: +1.760.318.2824 France: 0800 901 383UK: +44 (0)1460 270200 Germany: 0800 1808 443 Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com Printed on 26 May 16 17:45 using Part Data Sheet V1.00014 Page 3 of 3