EURO
QUARTZ
Micro-miniature SMD package 5mm x 3.2mm
Stability from ±1ppm over -30° to +75°C
Supply Voltage from 2.3 Volts to 5.5 Volts
Produced as TCXO or VCTCXO with EFC
Readily customized
EM53S Series TCXO
Clipped Sinewave 5 x 3.2 x1.5mm SMD
·
EM53S - OUTLINES AND DIMENSIONS
DESCRIPTION
EM53 series TCXOs are ceramic SMD TCXOs packaged in an industry-
standard, micro-miniature 5 x 3.2mm package. This TCXO can be run
from a supply voltage of 2.3 to 5.5 Volts. Close tolerances from
±1ppm over -30° to +75°C are available. With clipped sine wave
output, the part can be produced as either a standard TCXO or a
voltage-controlled TCXO (VCTCXO).
SPECIFICATION
Product Series Code
TCXO:
VCTCXO:
Frequency Range:
Output Waveform:
Initial Calibration Tolerance*:
Standard Frequencies:
EM53S
VEM53S
9.6MHz to 26MHz
Clipped Sinewave
±3ppm at 25°C
9.6, 10.0, 12.80, 13.0, 14.40,
15.36, 16.384, 19.2, 19.440,
and 19.68MHz (Partial list)
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)
+2.3V to +5.5V
(Specify
when ordering)
VEM53S VOLTAGE CONTROL SPECIFICATION
0.8V p-p minimum
1.0V p-p minimum
2ms typical, 3ms max.
See table below
10kOhm//15pF
-10dB typical, -7dB max.
See table
DC block, AC coupled
-50° to +100°C
Electrical Frequency Tuning
3.0 Volts
5.0 Volt
±5 to ±12ppm
±6 to ±12ppm
+1.5 ±1.0V
+2.5 ±2.0V
(Up to ±100ppm is possible,
check for availability)
Positive - standard
(increase of
control voltage increases output
frequency.)
10% maximum
Operating Temperature Range:
Frequency Stability
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow:
Supply Voltage:
Output Voltage Levels
Supply Voltage = 3.3V:
Supply Voltage = 5.0 V:
Start-up Time:
Current Consumption:
Output Load:
Harmonic Distortion:
SSB Phase Noise:
Output Format:
Storage Temperature:
Slope Polarity:
* Stability over temperature is measured from this initial frequency
Linearity:
PHASE NOISE
FREQUENCY STABILITY
Frequency Stability (ppm)
0 ~ +50
-10 ~ +60
Temperature
Range (°C)
-20 ~ +70
-30 ~ +75
-40 ~ +85
±0.5
ASK
x
x
x
x
x
x
x
x
x
x
±1.0
±1.5
±2.0
±2.5
SSB Phase Noise
at 25°C
Offset
(Hz)
EM53S
13MHz
(dBc/Hz)
10
100
1k
10k
100k
-82
-110
-130
-140
-150
PART NUMBERING PROCEDURE
Example:
EM53S3-19.44-2.5/-30+75
= available, x = not available, ASK = call Technical Sales
= standard specification
CURRENT CONSUMPTION
Supply Voltage
9.6 to 13MHz
Frequency
Range
13.1 to 20MHz
20.1 to 26MHz
+3.3 Volts
1.3mA
1.5mA
2.0mA
+5.0 Volts
2.0mA
2.2mA
2.5mA
Series Description
TCXO = EM53S
VCTCXO = VEM53S
Supply Voltage
25 = 2.5 VDC
28 = 2.8 VDC
3 = 3.0 VDC
33 = 3.3 VDC
5 = 5.0 VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°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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