EURO
QUARTZ
CMOS 7 x 5 x 2.3mm SMD, MHz Range
Miniature 7 x 5 x 2.3mm SMD package
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
EM572T TCXO
1.25MHz to 156.0MHz
EM572T - OUTLINES AND DIMENSIONS
DESCRIPTION
EM572T series TCXOs are packaged in a miniature 4 pad ceramic
SMD 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:
VCTCXO:
Frequency Range:
Output Waveform:
Initial Calibration Tolerance:
Standard Frequencies:
EM572T (EML572T >40MHz)
VEM572T (VEML572T >40MHz)
1.25MHz to 156.0MHz
Squarewave, HCMOS
<±2.0ppm 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
(
)
Operating Temperature Range:
Frequency Stability
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow (SMD type):
Supply Voltage:
Output Logic Levels:
Rise and Fall Times:
Duty Cycle:
Start-up Time:
Current Consumption:
Output Load:
Storage Temperature:
±1.0 ppm max. first year
±0.2 ppm max. ±5% change
±0.2 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
10ms max.
15pF
-55~+125°C
VEM572T VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Standard = +1.5±1.0Volts for all input
voltages.
±5 ppm (Vcon = +1.5±1.0V)
Positive
Frequency Deviation:
Slope Polarity:
Input Impedance:
1M minimum
Modulation Bandwidth: 20kHz minimum
FREQUENCY STABILITY
Frequency Stability (ppm)
0 ~ +50
±0.5
P
P
P
ASK
x
±1.0
P
P
P
P
ASK
±1.5
P
P
P
P
P
±2.0
P
P
P
P
P
±2.5
P
P
P
STDP
P
INPUT VOLTAGE & CURRENT CONSUMPTION
Input Voltage/
Frequency
8.192MHz
10.000MHz
24.576MHz
60.000MHz
150.00MHz
+2.8V
2mA
3mA
5mA
11mA
19mA
+3.0
+3.3V
2mA
4mA
6mA
14mA
23mA
+5.0 V
5mA
7mA
10mA
24mA
36mA
-10 ~ +60
Temperature
Range (°C)
-20 ~ +70
-30 ~ +75
-40 ~ +85
P
= available, x = not available, ASK = call Tech. Sales
STD = Standard
PART NUMBERING PROCEDURE
Example:
EM572T33-38.880-2.5/-30+75
SSB PHASE NOISE at 25°C, 15pF
Offset / dBc / Hz
EM572T33
10.000MHz
EM572T33
77.760MHz
EM572T33
155.52MHz
10Hz
-96
-74
-68
100Hz
-122
-105
-96
1kHz
-138
-120
-110
10kHz
-145
-124
-117
100kHz
-150
-120
-112
Series Description
TCXO = EM572T*
VCTCXO = VEM572T*
Supply Voltage
28 = 2.8VDC
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.
* Above 40MHz part numbers are EML572T or VEML572T to indicate
use of a Phase Locked Loop (PLL) circuit above this frequency.
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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