Data Sheet

EURO QUARTZ
EM32T TCXO
8.192MHz to 38.4MHz
HCMOS TCXO 3.2 x 2.5mm SMD
Miniature 3.2 x 2.5 x 1.3mm SMD package
Frequency range: 8.192MHz to 38.4MHz
Supply voltage 3.3 Volts
Frequency stability from ±1ppm over -40 to +85°C
RoHS compliant
EM32T - OUTLINES AND DIMENSIONS
DESCRIPTION
EM32T series TCXOs are packaged in a miniature, 3.2 x 2.5mm
outline, 4 pad ceramic SMD package. With squarewave (HCMOS)
output, tolerances are available from ±1.0ppm over -40° to +85°C.
The part has a 0.01mF decoupling capacitor built in.
SPECIFICATION
Product Series Code
TCXO:
VCTCXO:
Frequency Range:
Output Waveform:
Initial Calibration Tolerance:
Operating Temperature Range:
Frequency Stability
vs. Temperature:
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow (SMD type):
EM32T
VEM32T
8.192MHz to 38.4MHz
Squarewave, HCMOS
<±2.0ppm at +25°±2°C
from 0°~50° to -40°~+85°C
±1.0 ppm max. first year
±0.3 ppm max. ±5% change
±0.3 ppm max. ±10% change
±1.0ppm max. for one reflow
Supply Voltage:
Output Logic Levels:
Start-up Time:
Current Consumption:
+3.3Volts ±5%
Logic High: 90% Vdd min.
Logic Low: 10% Vdd max.
10ns max.
50%±10% standard,
50%±5% option
5ms typical, 10ms max.
4.0mA typical
Output Load:
Storage Temperature:
Ageing:
15pF
-50°~+100°C
±3ppm per year (max.)
Rise and Fall Times:
Duty Cycle:
Temp.
Range
(°C)
P
Control Voltage:
Standard = +1.5±1.0Volts for all input
voltages.
Frequency Deviation:
Slope Polarity:
±6.0 ppm min. (Vcon = +4.5V±1.0V)
Positive
Input Impedance:
50k minimum
Modulation Bandwidth: 20kHz minimum
Linearity:
±10% maximum
FREQUENCY STABILITY
Frequency Stability
(ppm)
VEM32T VOLTAGE CONTROL SPECIFICATION
±0.5
±1.0
±1.5
±2.0
±2.5
±3.0
±5.0
0 ~ +50
P
P
P
P
P
P
P
-10 ~ +60
ASK
P
P
P
P
P
P
-20 ~ +70
x
P
P
P
P
P
P
-30 ~ +75
x
P
P
P
PP
P
P
-40 ~ +85
x
P
P
P
P
P
P
= available, x = not available, ASK = call Technical Sales
PART NUMBERS
EM32T33-38.400-2.5/-30+75
Example:
Series Description
TCXO = EM32T
VCTCXO = VEM32T
Supply Voltage 3.3VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
(Lower and upper limits.)
SSB PHASE NOISE at 25°C
Offset
M32T33
10.0MHz
(dBc/Hz)
10Hz
100Hz
1kHz
10kHz
100kHz
1 MHz
10 MHz
-80
-115
-135
-138
-142
-148
-150
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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