Data Sheet

EURO QUARTZ
EME32T TCXO
CMOS 3.28 x 2.5 x 0.9mm SMD
32.768kHz
Miniature 3.28 x 2.5mm SMD package
Frequency: 32.768kHz
Supply voltage 1.8, 2.5, 3.0, 3.3 or 5.0 Volts
Frequency stability from ±2ppm over 0 to +50°C
RoHS compliant
EME32T - OUTLINES AND DIMENSIONS
DESCRIPTION
EME32T series TCXOs are packaged in a miniature 4 pad ceramic
SMD package. With squarewave (CMOS) output, tolerances are
available from ±2.0ppm over 0° to +50°C.
SPECIFICATION
Product Series Code:
Output Waveform:
Initial Calibration Tolerance:
Frequency Stability:
0° to +50°C:
-20° to +70°C:
-40° to +85°C:
Timing error over time:
Frequency Stability
vs. Ageing:
vs. Voltage Change:
vs. Load Change:
vs. Reflow:
vs. All range of Vdd:
Supply Voltage Variation (∆Vdd):
Output Logic / Output Load:
Output Voltage Level 'HIGH':
Output Voltage Level 'LOW':
Rise and Fall Times:
Duty Cycle:
FREQUENCY
STABILITY
Start-up Time:
Pad 1 OE Thresholds:
CURRENT CONSUMPTION
Supply Voltage
Current
(max.)
1.8V
0.79µA
2.5V
1.05µA
3.0V
1.25µA
3.3V
1.37µA
5.0V
2.05µA
EME32T
CMOS Squarewave
±1.5ppm (at t. 25°±2°C)
±2.0ppm
±2.5ppm
±5.0ppm
±0.432 s/day
±12.960 s/month
±2.628 m/year (
±3.0 ppm max. first year
±0.2 ppm max. ±5% change
±0.2 ppm max. ±10% change
±1ppm max. for one reflow
(Measured after 24 hours)
±1.0ppm/Volt max.
0.25V max. Condition
∆V/∆t = 1V /us
CMOS / 15pF
Vdd -0.4V min. Ioh = 0.1mA
0.4V max. Ioh = 0.1mA
100ns max.
50%±10% typical
1s max. at 25°C
3s max. Over -40° to +85°C
Vih = 0.8*Vdd, Vil = 0.2*Vdd
PART NUMBERING PROCEDURE
Example:
EME32T33-32.768k-2.5/-20+70
Series Description
TCXO = EME32T
Supply Voltage
18 = 1.8 VDC
25 = 2.5 VDC
3 = 3.0 VDC
33 = 3.3 VDC
5 = 5.0 VDC
Frequency (kHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
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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