EURO
QUARTZ
3.2 x 2.5 x 1.3mm SMD Clipped Sinewave
Ultra-miniature seam sealed SMD 3.2 x 2.5 x 1.3mm
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
DESCRIPTION
EM32 series TCXOs are ceramic SMD TCXOs packaged in an industry-
standard, ultra-miniature 3.2 x 2.5mm package. The TCXO supply
voltage may be chosen from 2.3 to 5.5 Volts. Close tolerances from
±1ppm over -30° to +75°C are available. 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**:
Operating Temperature Range:
Frequency Stability
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow:
Current Consumption:
9.6 to 15MHz:
15.01 to 26.0MHz:
26.01 to 40MHz:
Supply Voltage:
Output Voltage Level:
Rise/Fall Time:
Start-up Time:
Output Load:
Harmonic Distortion:
SSB Phase Noise:
Output Format:
EM32S
VEM32S
10.0MHz to 40.0MHz*
Clipped Sinewave
<±1ppm at 25°C
EM32S TCXO
16MHz to 40MHz
EM32S - OUTLINES AND DIMENSIONS
±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)
1.5mA
2.0mA
2.5mA
+2.8, +3.0 or +5.0Volts
(
0.8V p-p minimum
10 ns max.
2ms typical, 5ms max.
10kΩ//10pF ±10%
-10dB typical, -7dB max.
DC coupled.
VEM32S VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Standard = +1.5±1.0Volts for all input
voltages.
±5.0 ppm min.
Positive
Frequency Deviation:
Slope Polarity:
Storage Temperature:
-50° to +100°C
Input Impedance:
1.0M min.
Modulation Bandwidth: 3.0kHz min. measured at -3dB
Linearity:
10% max.
PART NUMBERING PROCEDURE
FREQUENCY STABILITY
Frequency Stability
(ppm)
0 ~ +50
-10 ~ +60
Temp.
Range
(°C)
-20 ~ +70
-30 ~ +75
-40 ~ +85
P
±0.5
P
ASK
x
x
x
±1.0
P
P
P
P
P
±1.5
P
P
P
P
P
±2.0
P
P
P
P
P
±2.5
P
P
P
PP
P
±3.0
P
P
P
P
P
±5.0
P
P
P
P
P
Example:
EM32S 3 - 40.00 - 2.5/-30+75
Series Description
TCXO = EM32S
VCTCXO = VEM32S
Supply Voltage
28 = 2.8 VDC
3 = 3.0 VDC
5 = 5.0 VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
= available, x = not available, ASK = call Technical Sales
PHASE NOISE
SSB
Phase
Noise
at 25°C
Offset
(Hz)
EM32S
10MHz
(dBc/Hz)
10
-80
100
-115
1k
-135
10k
-138
100k
-142
1M
10M
-148 -150
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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