VOLTAGE CONTROLLED
TEMPERATURE COMPENSATED
CRYSTAL OSCILLATORS
Clipped Sine/HCMOS
SURFACE MOUNT
EE models
11.4 x 9.6 mm Surface Mount
1.25 MHz to 40 MHz
FEATURES
•
Low power, low voltage
•
±5 ppm or ±10 ppm min is controlled by external voltage
•
±3 ppm min is controlled mechanically
•
Four stability choices — from ±1 to ±5 ppm
•
Guaranteed start-up with ramping DC Supply
•
Choice of two supply voltages — 3.3V or 5.0V
•
Choice of two output waveforms — Clipped Sine or HCMOS
TYPICAL APPLICATIONS
•
Ideal for battery powered equipment
•
Recommended for portable, mobile, wireless equipment
Description
MF Electronics EE (SMD) VCTCXOs are
miniature oscillators with many configura-
tions. They have various frequency ranges
between 1.25 MHz to 40 MHz, and are
ideal for high volume, low cost applications.
Many choices of stability and temperature
are possible, resulting in the optimum
cost-performance tradeoff. Mechanical
control is standard, with optional elec-
tronic control, allowing the frequency to
be set or track to a reference frequency.
HCMOS output may be chosen to drive
logic devices, but when clipped sine
wave is used, the current is less than
2.5 mA. The oscillators are furnished in
tape and reel for automated production.
11.4
±
0.3
0.8
±
0.3
11.6
±
0.3
–
4.0 max
9.6
±–
0.3
2.54
±
0.3
–
7.62
±
0.3
Trim access
this surface
1.0
±–
0.3
4
5 6 7 8
2.2
±
0.4
–
4
1
1.0
±
0.3
–
1.4
2.54
Typ
4.2
9.2
CONNECTIONS
Pad 1. Ground
Pad 4. Ground
Pad 5. Output
Pad 6. Ground
Pad 7. Control Voltage, V
C
Pad 8. V
DD
(All dimensions are in mm.)
Land Pattern
VCTCXO-EE
Models
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200
•
USA Sales: +1.800.331.1236
•
Fax: 914.712.2290
•
www.mfelectronics.com
•
email:sales@mfelectronics.com
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VOLTAGE CONTROLLED
TEMPERATURE COMPENSATED
CRYSTAL OSCILLATORS
Clipped Sine/HCMOS
11.4 x 9.6 mm, Surface Mount
1.25 MHz to 40 MHz
SURFACE MOUNT
EE models
Temperature of pad (°C)
230
200
160
140
100
SPECIFICATIONS
Temperature
Operating
Input Voltage, V
DD
Input Current
Choice of 4 ranges (-40º to +85º)
3.3 volts ±5%, or 5.0 volts ±5%
2.5 ma, max (clipped sine wave)
25 ma, max (HCMOS 3.3V Models)
35 ma, max (HCMOS 5.0V Models)
Any from 1.25 MHz to 40 MHz
30
sec
min.
50 to
100 sec
20 30 to 20
sec 50 sec sec
min.
min.
Frequency Range
Output Choice
Clipped Sine Wave
(10 to 40 MHz)
HCMOS
(1.25 to 40 MHz)
Recommended Reflow Soldering Profile
0.8 volts p-p, min, clipped sine wave
into 10 pf in parallel with 10 Kohms
HCMOS output into 15 pf max load,
with 40/60 symmetry
Frequency Stability
vs Temperature
MARKING SPECIFICATION
Oscillator is marked with part number, frequency and date code
Aging
Frequency Control, Electronic
3.3V supply voltage
5.0V supply voltage
Frequency Control, Mechanical
PART NUMBERING GUIDE
Example: EE-A1.5A1A40.000
±1 ppm to ±5 ppm choices
±1 ppm per year at 25ºC
±5 or ±10 ppm, min for 1.65 ±1.0 V
±5 or ±10 ppm, min for 2.5 ±2.0 V
±3 ppm, min
EE-
Supply Voltage
A=3.3 volts
B=5.0 volts
A
1.5
A
1
A
40.000
Frequency in MHz
Stability vs Temperature
1.0 = ±1.0 ppm
1.5 = ±1.5 ppm
2.5 = ±2.5 ppm
5.0 = ±5.0 ppm
Temperature Range of Operation
A = -10 to +60ºC
B = -20 to +70ºC
C = -30 to +75ºC
D = -40 to +85ºC
Frequency Control
A=Mechanical adjustment only
B=Mechanical adjust with ±5 ppm electronic control
C=Mechanical adjust with ±10 ppm electronic control
D=±5ppm electronic control, no mechanical control
Output Type
1=Clipped sine wave (10 MHz and above)
2=HCMOS
SS#
EE
Rev.
A
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
Unless customer-specific terms and conditions
are signed by an officer of MF Electronics, the
sale of this and all MF Electronics products are
subject to terms and conditions set forth at
www.mfelectronics.com/terms
International Sales: +1.914-712-2200
•
USA Sales: +1.800.331.1236
•
Fax: 914.712.2290
•
www.mfelectronics.com
•
email:sales@mfelectronics.com
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