LFTCXO070037 IQD

TCXO Specification IQXT-270 ISSUE 1 April 2016 Description The IQXT-270 employs an analogue ASIC for the oscillator and a high order temperature compensation circuit in a 2.0 x 1.6mm size package. The device can be placed in power down mode through a single input pin. During standard operation, power consumption is minimised by operating down to a supply voltage of 1.8V. The IQXT-270 s high stability, low power consumption, small footprint and powerful compensation method makes it a TCXO ideally suited for demanding GPS mobile applications. Applications: GPS Smartphone Communications Consumer Features: Excellent phase noise performance Outline (mm) Pad 1 GND/NC Low start up drift rate Height less than 0.8mm Operates at 1.8V supply Power Down Mode Standard temperature stability of 0.5ppm over wide temperature ranges Frequency Parameters Frequency 13.0MHz to 52.0MHz Frequency Tolerance 2.00ppm Frequency Stability 0.50ppm to 2.00ppm Frequency calibration + reflow: offset from nominal frequency measured at 25C 2C. Two consecutive reflows as per profile after 2 hours relaxation at 25C Frequency stability over temperature: referenced to the midpoint between minimum and maximum frequency value over the specified temperature range. Control voltage set to Outline (mm) = Pad 1 VC midpoint of control voltage (Note 1) Frequency slope, minimum of 1 frequency reading every 2C, over the operating temperature range (Note 1): 0.05 to 0.1ppm/C 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, note 2): 0.2ppm max Long term stability, frequency drift over 1 year at 25C: 1ppm max Electrical Parameters Supply voltage range: 1.8 to 3.0V Supply current (see note 2) 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 the oscillator output section at 25C Note 3: External AC-Coupling capacitor required. 1nF or greater recommended. Note 4: Frequency shift 1ppm after environmental conditions 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 21 Jul 16 15:22 using Model Data Sheet V1.2550 Page 1 of 4TCXO Specification IQXT-270 Frequency Adjustment Pulling 6ppm to 30ppm Input Impedence 500k min Operating Temperature Ranges -40 to 85C Output Details Output Compatability Clipped Sine Drive Capability 10k//10pF 10% Output: DC coupled (see note 3) Output Control 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. Supply voltage 2.3V): 0.3 to 1.5V Supply voltage >2.3V: 0.4 to 2.4V Linearity (deviation from straight line curve fit): 10% max Power Down Mode: Logic low (20%Vs max) to E/D disables output. Logic high (80%Vs min) to E/D enables output. Standby current: 0.01A max Start-Up Time (amplitude) within 90% of specified output: 0.5ms max Start-Up Time (frequency) within 0.5ppm of steady state: 2ms max Output Levels Output voltage level (at min supply voltage): 0.8V min (Note 2) Noise Parameters Phase Noise (typ 26MHz): -65dBc/Hz 1Hz -93dBc/Hz 10Hz -117dBc/Hz 100Hz -137dBc/Hz 1kHz -149dBc/Hz 10kHz -151dBc/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 (Note 4): 10G peak acceleration for 4 minutes per sweep. 4 sweeps in each of the 3 orientations. Swept from 20-2000Hz Storage Temperature Range: -40 to 85C 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 21 Jul 16 15:22 using Model Data Sheet V1.2550 Page 2 of 4