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IQXT-270 fiches techniques PDF

IQD - TCXO

Numéro de référence IQXT-270
Description TCXO
Fabricant IQD 
Logo IQD 





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IQXT-270 fiche technique
ISSUE 1; July 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
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 25˚C ±2˚C. Two consecutive reflows as per profile
after 2 hours
relaxation at 25°C
Frequency stability over temperature: 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 1 frequency reading every 2°C,
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 25°C: ±0.6ppm max
Supply voltage variation (±5% change at 25°C): ±0.1ppm max
Load variation (±10% change, note 2): ±0.2ppm max
Long term stability, frequency drift over 1 year at 25°C: ±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 25°C
Note 3: External AC-Coupling capacitor required. 1nF or greater
recommended.
Note 4: Frequency shift 1ppm after environmental conditions
TCXO Specification
IQXT-270
Outline (mm) Pad 1 GND/NC
Outline (mm) = Pad 1 VC
Sales Office Contact Details:
UK: +44 (0)1460 270200
Germany: 0800 1808 443
France: 0800 901 383
USA: +1.760.318.2824
Printed on 30 Aug 16 15:42 using Model Data Sheet V1.2550
Web: www.iqdfrequencyproducts.com
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