TCXO Specification
Part No. + Packaging:
LFTCXO070180Reel
Description
The IQXT-275-1 employs an analogue IC for the oscillator and
temperature compensation. The crystal is surface mounted on
top of the ceramic IC carrier. The segregation of the crystal from
the oscillator further improves the reliability of the product.
Model
IQXT-275-1
Model Issue number
1
Frequency Parameters
Outline (mm)
Frequency
Frequency Tolerance
Tolerance Condition
Frequency Stability
19.20MHz
±1.00ppm
@ 25°C ±2°C
±
0.50ppm
Operating Temperature Range
-30.00 to 85.00°C
Ageing
±1ppm max over 1yr @ 25°C
Frequency Stability: TA varied over operating temperature
range, measurement referenced to frequency observed with
Fref=(Fmax+Fmin)/2, Vs=1.8V and load=10kΩ//10pF.
Frequency Slope (minimum of one frequency reading every
2°C):
-10°C to 60°C: 0.05ppm/°C max
-30°C to 85°C: 0.1ppm/°C 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): 50ppb/°C max
(Note: Discard the first 0.5°C interval of each heating and
cooling cycle.)
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 @ 25°C): ±0.2ppm max
Load Variation (±10% change @ 25°C): ±0.2ppm max
Reflow Variation (after two consecutive reflows as per profile
shown and 1hr recovery @ 25°C): ±1ppm max
Note: Parts should be shielded from drafts causing unexpected
thermal gradients. Temperature changes due to ambient air
currents can lead to short term frequency drift.
Electrical Parameters
Pb-Free Reflow
1.8V ±5%
Supply Voltage
Current Draw
2.00mA
Supply Current (@ TA=25°C, Vs max and load=10kΩ//10pF):
2mA max
Output Details
Clipped Sine
Output Compatability
Drive Capability
10kΩ//10pF ±10%
Output Voltage Level (@ TA=25°C, Vs min and
load=10kΩ//10pF): 0.8V pk-pk min
Output: DC coupled
Note: AC-coupled output requires an external capacitor,
≥1nF
recommended.
Sales Office Contact Details:
UK: +44 (0)1460 270200
Germany: 0800 1808 443
France: 0800 901 383
USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com
Web: www.iqdfrequencyproducts.com
Page 1 of 2
Printed on 26 May 16 23:35 using Part Data Sheet V1.00014
TCXO Specification
Part No. + Packaging:
LFTCXO070180Reel
Noise Parameters
Phase Noise @ 25°C (typ):
-65dBc/Hz @ 1Hz
-93dBc/Hz @ 10Hz
-117dBc/Hz @ 100Hz
-137dBc/Hz @ 1kHz
-149dBc/Hz @ 10kHz
-151dBc/Hz @ 100kHz
Phase Noise @ 25°C (max):
-57dBc/Hz @ 1Hz
-86dBc/Hz @ 10Hz
-111dBc/Hz @ 100Hz
-133dBc/Hz @ 1kHz
-144dBc/Hz @ 10kHz
-148dBc/Hz @ 100kHz
Environmental Parameters
Storage Temperature Range: -40 to 85°C
Mechanical Shock: Half sine-wave acceleration of 100G peak
amplitude for 11ms duration, 3 time in 3 mutually
perpendicular planes.
Vibration: 10G rms from 30Hz to 1500Hz random for 4hrs in 3
mutually perpendicular planes, 12hrs total.
Thermal Shock: Exposed @ -40°C for 30mins then 85°C for
30mins for a period of 5 days.
Humidity: After 48hrs @ 85°C ±2°C, 85% RH non-condensing.
Manufacturing Details
Maximum Process Temperature: 260°C (40secs max)
Compliance
RoHS Status (2011/65/EU)
REACh Status
MSL Rating (JDEC-STD-033):
Packaging Details
Compliant
Compliant
Not Applicable
Pack Style: Reel
Pack Size: 3,000
Tape & reel in accordance with EIA-481-D
Alternative packing option available
Sales Office Contact Details:
UK: +44 (0)1460 270200
Germany: 0800 1808 443
France: 0800 901 383
USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com
Web: www.iqdfrequencyproducts.com
Page 2 of 2
Printed on 26 May 16 23:35 using Part Data Sheet V1.00014
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