EURO
QUARTZ
14 pin DIL package
Frequency range: 9.6MHz to 26.0MHz
Supply voltage 3.0 or 5.0 Volts
EFC tuning ±5ppm to ±12ppm
Customized specifications available
VEM14S Series TCXO
Voltage-controlled Clipped Sinewave 14 pin DIL
VEM14S - OUTLINES AND DIMENSIONS
DESCRIPTION
VEM14S series TCXOs are packaged in the industry-standard 14 pin
Dual-in-Line package. With Clipped Sinewave output, tolerances are
available from ±1.0ppm over 0° to 50°C to ±1ppm over -30° to
+70°C. Supply voltage 3.0 or 5.0 Volts. The output is controllable by
EFC enabling output variation of ±5ppm to ±12ppm.
SPECIFICATION
Product Series Code:
Frequency Range:
Output Waveform:
Initial Calibration Tolerance*:
Standard Frequencies:
VEM14S
9.6MHz to 26.0MHz
Clipped sine wave
±3ppm at 25°C
9.6, 10.0, 12.80, 13.0, 14.40,
15.36, 16.384, 19.2, 19.440,
and 19.680MHz.
See table
See table
±1.0 ppm max. first year
±0.3 ppm max. ±5% change
±0.3 ppm max. ±10% change
±1ppm max. for one reflow
(Measured after 24 hours)
+2.6 VDC to +6.0 VDC
3.0V and 5.0V are standard
0.8V p-p minimum
1.0V p-p minimum
See table
10k Ohms//15pF
-10dB typical, -7dB maximum
DC block, AC coupled
-40°C to +85°C
±5ppm to ±12ppm for .5Vdd
(<±100ppm is available)
Positive
(Increasing control V.
increases output frequency)
10% maximum
Operating Temperature Range:
Frequency Stability
Over Operating Temperature range:
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow:
Input Voltage Range:
Output Voltage Level
+3.0V supply:
+5.0V supply:
Current Consumption:
Output Load:
Harmonic Distortion:
Output Format:
Storage Temperature:
Electrical Frequency Tuning
Slope Polarity:
Linearity:
VEM14S - TEST CIRCUIT
FREQUENCY STABILITY
Frequency Stability (ppm)
0 ~ +50
Operating
Temperature
Range (°C)
-10 ~ +60
-20 ~ +70
-30 ~ +75
±1.0
±1.5
±2.0
±2.5
VEM14S - PART NUMBERING PROCEDURE
Example:
VEM14S3-19.44-2.5/-30+75
= standard specification
PHASE NOISE (Example: VEM14S at 10.0MHz)
Offset
(Hz)
SSB Phase Noise
at 25°C
VEM14S
10MHz
(dBc/Hz)
10
100
1k
10k
100k
Series Description
Supply Voltage
3 = 3.0 VDC
5 = 5.0 VDC
Frequency
Stability over OTR (ppm)
Operating Temperature Range (OTR) (°C)
-72
-110
-125
-132
-125
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk
www.euroquartz.co.uk
PCB Design
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