Datasheet

Part No. + Packaging: LFTVXO070168Cutt
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-270-10
Model
Model Issue number
1
Frequency Parameters
Frequency
19.20MHz
Frequency Tolerance
±1.00ppm
Frequency Stability
±0.50ppm
-30.00 to 85.00°C
Operating 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 ±0.15V
Supply 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 901 383
UK: [phone]
Germany: 0800 1808 443
Email: [e-mail]
Web: www.iqdfrequencyproducts.com
Printed on 26 May 16 17:44 using Part Data Sheet V1.00014
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