EURO
QUARTZ
2.0 x 1.6 x 0.8mm Clipped Sinewave Output
Ultra-miniature SMD package 2.0 x 1.6 x 0.8mm
Stability from ±0.5ppm over -20° to +70°C
Supply Voltage 1.8V, 2.5V or 3.0Volts
Miniature, lightweight and compact
Ideal for portable devices such as GPS and handsets
SPECIFICATION
Product Series
Output Wave Form:
Supply Voltage
Frequency Range:
Initial Calibration Tolerance:
Frequency Stability
vs Temperature:
vs Ageing:
vs Voltage Change:
vs Load Change:
vs Reflow:
Output Load (CL):
Frequency Deviation Range (VCTCXO):
Current Consumption:
Startup Time:
Output Format:
Packaging:
1.8V±5%
(1.71V ~ 1.89V)
TCXO = M21S , VCTCXO - VM21S
Clipped Sine Wave
2.5V±5%
(2.37V ~ 2.62V)
13.0MHz to 52.0MHz
±2ppm maximum, +25°C, 1 hour after reflow
EM21S TCXO
13MHz to 52MHz
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3.0V±5%
(2.85V ~ 3.15V)
From ±0.5ppm to ±2.5ppm over operating temperature range.
Referenced to frequency reading at 25°C.
See table below for availability
±1.0ppm maximum, first year at 25°C
±0.3ppm maximum for a ±5% voltage change
±0.2ppm maximum for a ±10% load change
±1.0ppm maximum for 1 reflow and measured after 24 hours
10kΩ//10pF
typical
Pulling ±8.0ppm (Pad 1 = Vcontrol = +0.9V±0.8V
2mA max.
5ms max. (to reach 90% amplitude and at 25°C±2°C)
DC block, AC couple
8.0mm tape; 4.0mm pitch; 180mm reel;
1000 pieces (code P1) or 3000 pieces (code P3) per reel.
Cut tape for <1k pieces.
AVAILABLE FREQUENCY STABILITY
vs OPERATING TEMPERATURE RANGE
Frequency Stability (ppm)
0 ~ +50
-10 ~ +60
Temperature
Range (°C)
-20 ~ +70
-30 ~ +75
-40 ~ +85
✓
±0.5
✓
✓
✓
ASK
ASK
±1.0
✓
✓
✓
✓
ASK
±1.5
✓
✓
✓
✓
✓
±2.0
✓
✓
✓
✓
✓
±2.5
✓
✓
✓
STD
✓
EM21S - OUTLINES AND DIMENSIONS
= available, STD = standard, ASK = call Technical Sales
OUTPUT WAVEFORM
Waveform at Pin 3 - Clipped Sine Wave
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
EURO
QUARTZ
2.0 x 1.6 x 0.8mm Clipped Sinewave Output
ENVIRONMENTAL PERFORMANCE SPECIFICATION
1. Temperature Test
Temperature Cycling Test
Conditions:
Results:
Thermal Shock Test
Temperature T(H)+125°C, T(L)-55°C
Results:
Low Temperature Test
Conditions:
Results:
2. Ageing Test
Conditions:
Results:
3. Salt Spray Test
Conditions:
Results:
4. Humidity Test
Conditions:
Results:
Temperature: +40°±2°C
Relative Humidity 90-95% Duration of test 96 hours
Insulation resistance must be 500M Ohm/100 VDC minimum
Resistance and wavefor must remain within specification/
Temperature: +35°±2°C
NaCl 5%
There should be no stain on surface of products.
Duration of test 48 hours
Temperature +85°±2°C
Deviation of frequency must be less than ±3ppm.
Duration of test 96 hours
(±0.0003%)
Temperature -20°±2°C
There should be no stain on surface of products.
Frequency and waveform of tested products must remain within specifications.
Duration of test 96 hours
Duration of cycle x3
Exposure time at temperature extremes = 5 minutes
Performance of tested products must remain within specifications.
(1) At-55°, 30 minutes
(3) At+85°C, 30 minutes
(2) At+25°C, 10~15 minutes (4) At+25°C, 10~15 minutes
Number of steps: x3
Performance of tested products must remain within specifications.
Steps of cycle:
EM21S TCXO
13MHz to 52MHz
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5. Fine Leak Test
Conditions:
Results:
Helium
Less than 2 x 10
-8
ATM cc/s
PART NUMBERING PROCEDURE
Example:
VEM21S 18 - 48.000 - 2.0/ -30+85
Series Description
TCXO = EM21S
VCTCXO = VEM21S
Supply Voltage
18 = 1.8 VDC
25 = 2.5 VDC
30 = 3.0 VDC
Frequency (MHz)
Stability over OTR (±ppm)
(
)
Operating Temperature Range (OTR) (°C)
0° ~ 50°C to -40° ~ +85°C
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
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