Data Sheet - Euroquartz

EURO QUARTZ
EM572T Series TCXO
HCMOS 7 x 5 x 2.3mm SMD, kHz Range
Miniature 7 x 5 x 2.3mm SMD package
Frequency range: 20.0kHz to 52.7kHz including 32.768kHz
Supply voltage 3.3 or 5.0 Volts
Frequency stability from ±1ppm over -30 to +75°C
RoHS compliant
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:
Standard Frequency:
Output Waveform:
Initial Calibration Tolerance:
Operating Temperature Range:
Frequency Stability
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow (SMD type):
EM572T
VEM572T
20.0kHz to 52.7kHz
32.768kHz
Squarewave, HCMOS
<±2.0ppm at +25°±2°C
See table
±1.0 ppm max. first year
±0.2 ppm max. ±5% change
±0.2 ppm max. ±10% change
±1.0ppm max. for one reflow
(Measured after 24 hours)
+2.8, +3.0, +3.3 or +5.0V
(See table)
Logic High: 90% Vdd min.
Logic Low: 10% Vdd max.
10ns max.
50%±10% standard,
50%±5% option
10ms max.
See table below
15pF
-55~+125°C
Supply Voltage:
Output Logic Levels:
Rise and Fall Times:
Duty Cycle:
Start-up Time:
Current Consumption:
Output Load:
Storage Temperature:
FREQUENCY STABILITY
Frequency Stability (ppm)
Temperature
Range (°C)
±0.5
±1.0
±1.5
±2.0
±2.5
0 ~ +50
P
P
P
P
P
-10 ~ +60
P
P
P
P
P
-20 ~ +70
P
P
P
P
P
-30 ~ +75
ASK
P
P
P
STDP
-40 ~ +85
x
ASK
P
P
P
Pad Connections:
1. VCTCXO: Voltage control
TCXO: Not connected
2. Ground
3. Output
4. Supply Voltage
VEM572T VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Standard = +1.5±1.0Volts for all input
voltages. (Contact technical sales if
+2.5±2.0 Volts is required.)
Frequency Deviation: ±5 ppm (Vcon = +1.5±1.0V)
Slope Polarity:
Positive (increase of control voltage increases
output frequency.)
Input Impedance:
1M minimum
Modulation Bandwidth: 20kHz minimum
Linearity:
±10% maximum
= available, x = not available, ASK = call Tech. Sales
STD = Standard
P
CURRENT CONSUMPTION
Frequency
+3.3 V
32.768kHz
8.0mA
50kHz
12mA
PART NUMBERING PROCEDURE
Example:
EM572T33-32.768k-2.5/-30+75
Series Description
TCXO = EM572T
VCTCXO = VEM572T
Supply Voltage
33 = 3.3 VDC
5 = 5.0 VDC
Frequency (kHz)
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