Data Sheet

EURO QUARTZ
EML572T TCXO
CMOS 7 x 5 x 2.5mm SMD, MHz Range
40MHz to 156.0MHz
Miniature 7 x 5 x 2.3mm SMD package
Frequency range: 40MHz to 156.0MHz
Supply voltage 2.5, 3.0, 3.3 or 5.0 Volts
Frequency stability from ±0.5ppm
DESCRIPTION
EML572T - OUTLINES AND DIMENSIONS
EML572T series TCXOs are packaged in a miniature 4 pad ceramic
SMD package. With squarewave HCMOS output, tolerances are
available from ±0.5ppm. 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. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow:
EML572T
VEML572T
40.0MHz to 156.0MHz
Squarewave, HCMOS
<±2.0ppm at +25°±2°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
(
)
+2.8, +3.0, +3.3 or +5.0V
Logic High: 90% Vdd min.
Logic Low: 10% Vdd max.
10ns max.
50%±10% standard,
50%±5% option
5ms typ., 10ms max.
Supply Voltage:
Output Logic Levels:
Rise and Fall Times:
Duty Cycle:
Start-up Time:
Current Consumption
at 40.000MHz:
at 77.760MHz:
at 155.520MHz:
Output Load:
Storage Temperature:
10mA max.
32mA max.
50mA max.
15pF
-55~+125°C
VEML572T VOLTAGE CONTROL SPECIFICATION
Control Voltage Centre:
Frequency Deviation:
Slope Polarity:
Standard = +1.5±1.0 Volts for all
input voltages.
±5 ppm (Vcon = +1.5±1.0V)
Positive
Input Impedance:
Modulation Bandwidth:
Linearity:
50M minimum
20kHz minimum
±10% maximum
FREQUENCY STABILITY
Frequency Stability (ppm)
Temperature
Range (°C)
P
±0.5
±1.0
±1.5
±2.0
±2.5
±3.0
0 ~ +50
P
P
P
P
P
P
-10 ~ +60
ASK
P
P
P
P
P
-20 ~ +70
x
P
P
P
P
P
-30 ~ +75
x
P
P
P
PP
P
-40 ~ +85
x
ASK
P
P
P
P
= available, x = not available, ASK = call Tech. Sales
PART NUMBERING PROCEDURE
Example:
SSB PHASE NOISE at 25°C, 15pF
Offset: dBc/Hz
10Hz
100Hz
1kHz
10kHz
100kHz
EM572T33
40.000MHz
-85
-102
-121
-130
-132
EM572T33
77.760MHz
-74
-99
-98
-95
-90
EM572T33
155.52MHz
-68
-96
-100
-99
-90
EML572T33-40.000-2.5/-30+75
Series Description
TCXO = EML572T
VCTCXO = VEML572T
Supply Voltage
25 = 2.5VDC
3 = 3.0VDC
33 = 3.3 VDC
5 = 5.0 VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
Lower and upper limits.
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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