TCXO Specification Part No. + Packaging: LFTCXO070036Cutt Description The IQXT-270-3 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-270-3 Model Issue number 1 Frequency Parameters Frequency 16.3690MHz Frequency Tolerance 1.00ppm Frequency Stability 0.50ppm Operating Temperature Range -40.00 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 (note 1). Frequency Slope (minimum of one frequency reading every 2C, over the operating temperature range - note 1): 0.1ppm/C max Static Temperature Hysteresis (frequency change after reciprocal temperature ramped over the operating range, frequency measured before and after at 25C): 0.6ppm max Supply Voltage Variation (5% change at 25C): 0.1ppm max Load Variation (10% change at 25C - note 2): 0.2ppm max Frequency Drift Rate: Drift Period: 0.03 to 0.3 seconds: 500ppb/s max Drift Period: 0.3 to 1.0 seconds: 40ppb/s max Drift Period: 1.0 to 3.0 seconds: 2.5ppb/s max Electrical Parameters Pb-Free Reflow 1.8V 5% Supply Voltage Current Draw 1.50mA Supply Current (at Vs max - note 2): 1.5mA max Output Details Output Compatability Clipped Sine Drive Capability 10k//10pF 10% Output Voltage Level (at Vs min - note 2): 0.8V pk-pk min Output: DC coupled (note 3) Noise Parameters Phase Noise at 25C (typical): -62dBc/Hz 1Hz -90dBc/Hz 10Hz -112dBc/Hz 100Hz -132dBc/Hz 1kHz -145dBc/Hz 10kHz -147dBc/Hz 100kHz 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 26 May 16 17:45 using Part Data Sheet V1.00014 Page 1 of 2TCXO Specification Part No. + Packaging: LFTCXO070036Cutt 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 ( 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. Compliance RoHS Status (2011/65/EU) Compliant REACh Status Compliant MSL Rating (JDEC-STD-033): Not Applicable Packaging Details Pack Style: Cutt In tape, cut from a reel Pack Size: 100 Alternative packing option available 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 26 May 16 17:45 using Part Data Sheet V1.00014 Page 2 of 2