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

TCXO

HCMOS 7 x 5 x 2.3mm SMD, kHz Range

EM572T Series

DESCRIPTION

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 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.

EM572T - OUTLINES AND DIMENSIONS

SPECIFICATION

Product Series Code

TCXO:

EM572T

VCTCXO:

VEM572T

Frequency Range:

20.0kHz to 52.7kHz

Standard Frequency:

32.768kHz

Output Waveform:

Squarewave, HCMOS

Initial Calibration Tolerance:

<±2.0ppm at +25°±2°C

Operating Temperature Range:

See table

Frequency Stability

vs. Ageing:

±1.0 ppm max. first year

vs. Voltage Change:

±0.2 ppm max. ±5% change

vs. Load Change:

±0.2 ppm max. ±10% change

vs. Reflow (SMD type):

±1.0ppm max. for one reflow

(Measured after 24 hours)

Supply Voltage:

+2.8, +3.0, +3.3 or +5.0V

(See table)

Output Logic Levels:

Logic High: 90% Vdd min.

Logic Low: 10% Vdd max.

Rise and Fall Times:

10ns max.

Duty Cycle:

50%±10% standard,

50%±5% option

Start-up Time:

10ms max.

Current Consumption:

See table below

Output Load:

15pF

Storage Temperature:

-55~+125°C

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

VEM572T VOLTAGE CONTROL SPECIFICATION

Frequency Stability (ppm)

±0.5

±1.0

±1.5

±2.0

±2.5

Temperature

Range (°C)

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

-40 ~ +85

x

ASK

P

P

P

P

= available, x = not available, ASK = call Tech. Sales

STD = Standard

FREQUENCY STABILITY

Frequency

+3.3 V

32.768kHz

8.0mA

50kHz

12mA

CURRENT CONSUMPTION

PART NUMBERING PROCEDURE

Example:

EM572T33-32.768k-2.5/-30+75

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.

Series Description

TCXO = EM572T

VCTCXO = VEM572T

Pad Connections:

1. VCTCXO: Voltage control

TCXO: Not connected

2. Ground

3. Output

4. Supply Voltage