ELECTRONICS
TCXO
OSCILLATORS
EF Models, SMD TCXO
1-5 PPM,18.3 x 11.7 mm,
3.3 or 5.0V
1.2 MHz to 40 MHz
SURFACE MOUNT
EF models
SMD EF Models, TCXOs, 3.0 or 5.0 Volts
MF Electronics EF (SMD) TCXOs are intended to fit the
standard full size DIL layout for a 14 pin oscillator. These
are versatile oscillators with many specification combina-
tions. They may be had within the frequency range of 1.2
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.
Oscillators may be for 3.3 or 5.0 volts. Mechanical control
is standard, but electronic control may be added, allowing
the frequency to be set to, or track to a reference frequen-
cy.
HCMOS output may be chosen to drive logic devices. but
when clipped sine wave is used, the current is less than 3
mA. They are furnished in tape and reel for automated pro-
duction.
FIXED FREQUENCY
These surface mount oscillators are available from 1.20 MHz
to 40 MHz
VOLTAGE CONTROL OF FREQUENCY
±5 ppm or ±10 ppm min is controlled by external voltage
MECHANICAL CONTROL OF FREQUENCY
±3 ppm min
STABILITY
±1 to ±5 ppm
TEMPERATURE
Four temperature-stability ranges
AGING
Less than 1 ppm per year
INPUT VOLTAGE
3.3 or 5.0 volts availlable
21.3 ±0.5
18.3 ±0.3
11.7 ±0.5
Trimmer within
this area
4.2/5.3
1.7
1
4.0
7
7.62 ±0.3
8
FEATURES
•
Low power, low voltage
•
Ideal for battery powered equipment
•
Recommended for portable, mobile, wireless equipment
•
Four stability choices
•
Guaranteed start-up with ramping DC Supply
•
Choice of two supply voltages
•
Choice of two output waveforms
0.4/1.1
14
All dimensions are in mm.
TCXO-EF Models
CONNECTIONS
Pad 1.
Pad 7.
Pad 8.
Pad 14.
Electronic Frequency Control or No Connection
Ground
Output
Voltage Supply
1.5
5.7
18.8
7.62
Land Pattern
ELECTRONICS
10 Commerce Drive, New Rochelle, NY10801
•
914-712-2200
•
Fax: 914-576-6204
•
http://www.mfelectronics.com
•
email:sales@mfelectronics.com
1
ELECTRONICS
TCXO Oscillator
EF Models
3.3 or 5.0 V, 1-5 ppm
1.20 MHz to 40 MHz
SURFACE MOUNT
EF models
MARKING SPECIFICATION
Oscillator is marked with part number, frequency and date code
SPECIFICATIONS
Temperature
Operating
Frequency Range
Output Choice
Clipped Sine Wave
(9.6 to 35 MHz)
Choice of 4 ranges
Any frequency from 1.20 MHz to 40 MHz
0.8 volts p-p, min, clipped sine wave
into 10 pf in parallel with 10Kohms
HCMOS output into 15 pf max load,
with 40/60 symmetry
230
200
160
140
100
Temperature
of pad (°C)
30
sec
min.
50 to
100 sec
20 30 to 20
sec 50 sec sec
min.
min.
HCMOS
(1.2 to 40 MHz)
Frequency Stability
vs Temperature
Aging, at 25ºC
Frequency Control, Electronic
3.3V supply voltage
5V supply voltage
±1 ppm to ± 5 ppm choices
±1 ppm/year, max.
Time (sec)
±5 or ±10 ppm, min for 1.65 ±1.0 V
±5 or ±10 ppm, min for 2.5 ±2.0 V
Recommended Reflow Soldering Profile
Frequency Control, Mechanical
±3 ppm, min
Input Voltage, V
DD
3.3 volts±5%, or 5 volts ±5%
3.0 ma, max (clipped sine wave)
35 ma, max (HCMOS)
Note: Ultrasonic cleaning or aqueous cleaning must not be used
Input Current
ORDERING
Add desired performance codes for requirements to “EF”, and frequency, as shown below
EF-
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
B= Mechanical adjust with ±5 ppm electronic control
C=Mechanical adjust with ±10 ppm electronic control
Output Type
1 = Clipped sine wave
2 = HCMOS
ELECTRONICS
10 Commerce Drive, New Rochelle, NY10801
•
914-712-2200
•
Fax: 914-576-6204
•
http://www.mfelectronics.com
•
email:sales@mfelectronics.com
2
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
