QUARTZ
EURO
EM15GT TCXO
1.25MHz to 156.0MHz
CMOS, 14 pin DIL, MHz Range
14 pin DIL industry-standard package with trimmer
Wide frequency range: 1.25MHz to 156.0MHz
Supply voltage 2.8, 3.0, 3.3 or 5.0 Volts
Frequency stability from ±1ppm over -30 to +75°C
RoHS compliant
EM15GT - OUTLINES AND DIMENSIONS
DESCRIPTION
EM15GT series TCXOs are packaged in the industry-standard 14 pin
DIL package. With squarewave (CMOS) output, tolerances are
available from ±1.0ppm over -30° to +75°C. The part has a 0.01mF
decoupling capacitor built in.
SPECIFICATION
Product Series Code
TCXO:
EM15GT
VCTCXO:
VEM15GT
Frequency Range:
Output Waveform:
Initial Calibration Tolerance:
Standard Frequencies:
1.25MHz to 156.0MHz
Squarewave, HCMOS
<±1.0ppm at +25°±2°C
10.0, 12.8, 13.0, 14.4, 15.36,
16.384, 19.2, 19.440, 19.68,
25.0, 20.0, 27.0, 38.880,
40.0, 77.760, 125.0, 155.520
(Partial list)
Operating Temperature Range:
Frequency Stability
vs. Ageing:
See table
±1.0 ppm max. first year
±0.3 ppm max. ±5% change
±0.3 ppm max. ±10% change
±1.0ppm max. for one reflow
(Measured after 24 hours)
±3ppm minimum
vs. Voltage Change:
vs. Load Change:
vs. Reflow (SMD type):
Mechanical Frequency Tuning:
Supply Voltage:
+2.8, +3.0, +3.3 or +5.0V
(See table)
INPUT VOLTAGE & CURRENT CONSUMPTION
Output Logic Levels:
Logic High: 90% Vdd min.
Logic Low: 10% Vdd max.
10ns max.
50%±10% standard,
50%±5% option
Input Voltage/
Frequency
+2.8V
+3.0
+3.3V
+5.0 V
Rise and Fall Times:
Duty Cycle:
8.192MHz
10.0MHz
2mA
3mA
2mA
4mA
5mA
7mA
Start-up Time:
Current Consumption:
Output Load:
5ms typical, 10ms max.
See table below
15pF
77.760MHz
155.520MHz
14mA
26mA
17mA
35mA
32mA
50mA
Storage Temperature:
-55~+125°C
SSB PHASE NOISE at 25°C
FREQUENCY STABILITY
Offset
10Hz
100Hz
1kHz
10kHz
100kHz
Frequency Stability (ppm)
0 ~ +50
±0.5
±1.0
±1.5
±2.0
P
±2.5
P
at 10.0Mhz
(dBc/Hz)
-115
-135
-148
-152
-155
Part =
EM15GT33
ASK
P
P
x
P
P
P
x
at 155.250Mhz
(dBc/Hz)
-72
-110
-125
-132
-125
-10 ~ +60
x
x
x
x
P
P
Temperature
-20 ~ +70
Range (°C)
P
P
-30 ~ +75
-40 ~ +85
x
P
PP
P
x
x
x
PART NUMBERING SCHEDULE
P= available, x = not available, ASK = call Technical Sales
Example:
EM15GT33-38.880-2.5/-30+75
Series Description
TCXO = EM15GT
VCTCXO = VEM15GT
VEM15GT VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Standard = +1.5±1.0Volts for all input
voltages. (Contact technical sales if
+2.5±2.0 Volts is required.)
Supply Voltage
28 = 2.8VDC
3 = 3.0VDC
33 = 3.3 VDC
5 = 5.0 VDC
Frequency Deviation: ±6.0 ppm min. (Vcon = +4.5V±1.0V)
Slope Polarity:
Positive (increase of control voltage increases
output frequency.)
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
Lower and upper limits.
Input Impedance:
50k minimum
Modulation Bandwidth: 20kHz minimum
Linearity: ±10% maximum
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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