VEM64T33-32.768K-2.5-30 EUROQUARTZ [EUROQUARTZ limited], VEM64T33-32.768K-2.5-30 Datasheet

VEM64T33-32.768K-2.5-30

Manufacturer Part Number

VEM64T33-32.768K-2.5-30

Description

HCMOS 6 pad SMD, kHz Range

Manufacturer

EUROQUARTZ [EUROQUARTZ limited]

Datasheet

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DESCRIPTION

SPECIFICATION

FREQUENCY STABILITY

CURRENT CONSUMPTION

Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001

EURO

EM64T series TCXOs are packaged in a miniature 6 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.

Product Series Code

Frequency Range:

Output Waveform:

Initial Calibration Tolerance

Operating Temperature Range:

Frequency Stability

Supply Voltage:

Output Logic Levels:

Rise and Fall Times:

Duty Cycle:

Start-up Time:

Current Consumption:

Output Load:

Storage Temperature:

Frequency

32.768kHz

50kHz

Temperature

Miniature 11.4 x 9.6 x 4.7mm SMD package

Frequency range: 20.0 to 50.0kHz; 32.768kHz

Supply voltage 3.3 or 5.0 Volts

Frequency stability from ±1ppm over -30 to +75°C

= available, x = not available, ASK = call Technical Sales

Range (°C)

Frequency Stability (ppm)

Models with mech. trimmer: <1.0ppm (at t. 25°±2°C)

Models without trimmer:

vs. Ageing:

vs. Voltage Change:

vs. Load Change:

vs. Reflow:

QUARTZ

-10 ~ +60

-20 ~ +70

-30 ~ +75

-40 ~ +85

0 ~ +50

EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

TCXO:

VCTCXO:

+3.3 V

8.0mA

12mA

±0.5

ASK

±1.0

EM64T

VEM64T

32.768kHz Standard frequency

20.0kHz to 50.0kHz

Squarewave

<2.0ppm (at t. 25°±2°C)

See table

±1.0 ppm max. first year

±0.3 ppm max. ±5% change

±0.3 ppm max. ±10% change

±1ppm max. for one reflow

(Measured after 24 hours)

+3.3 or +5.0Volts

(Specify when ordering)

Logic High: 90% Vdd min.

Logic Low: 10% Vdd max.

10ns max.

50%±5%

2ms typical, 5ms max.

See table below

15pF

-55~+125°C

±1.5

±2.0

±2.5

info@euroquartz.co.uk

PART NUMBERING PROCEDURE

VEM64T VOLTAGE CONTROL SPECIFICATION

EM64T - OUTLINES AND DIMENSIONS

Supply Voltage

Frequency (kHz)

Stability over OTR (±ppm)

Operating Temperature Range (OTR) (°C)

Lower and upper limits.

Example:

Series Description

TCXO = EM64T

VCTCXO = VEM64T

Control Voltage:

Frequency Deviation:

Slope Polarity:

Input Impedance:

Modulation Bandwidth: 3.0kHz min. measured at -3dB

Linearity:

HCMOS 6 pad SMD, kHz Range

33 = 3.3 VDC

5 = 5.0 VDC

EM64T33-32.768k-2.5/-30+75

EM64T Series

Standard = +1.5±1.0Volts for all input

voltages. (Contact technical sales if

+2.5±2.0 Volts is required.)

±6.0 ppm min.

Positive (increase of control voltage increases

output frequency.)

10k

10% max.

min.

www.euroquartz.co.uk

TCXO

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