VEM44GT33-19.440-1.5/-10+60 datasheet, PDF

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VEM44GT33-19.440-1.5/-10+60: DescriptionHCMOS Output Clock Oscillator, 19.44MHz Nom, ROHS COMPLIANT, MINIATURE, CERAMIC, SMD, 4 PIN; CategoryPassive components oscillator; File Size146KB，1 Pages; ManufacturerEuroquartz; Websitehttp://www.euroquartz.co.uk/; Environmental Compliance

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VEM44GT33-19.440-1.5/-10+60 Overview

HCMOS Output Clock Oscillator, 19.44MHz Nom, ROHS COMPLIANT, MINIATURE, CERAMIC, SMD, 4 PIN

VEM44GT33-19.440-1.5/-10+60 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Euroquartz
Reach Compliance Code	compliant
Other features	SYMMETRY 55/45 ALSO POSSIBLE
Ageing	1 PPM/FIRST YEAR
Maximum control voltage	2.5 V
Minimum control voltage	0.5 V
maximum descent time	10 ns
Frequency Adjustment - Mechanical	YES
Frequency offset/pull rate	6 ppm
frequency stability	1.5%
Installation features	SURFACE MOUNT
Nominal operating frequency	19.44 MHz
Maximum operating temperature	60 °C
Minimum operating temperature	-10 °C
Oscillator type	HCMOS
Output load	15 pF
physical size	11.4mm x 9.6mm x 4.7mm
longest rise time	10 ns
Nominal supply voltage	3.3 V
surface mount	YES
maximum symmetry	60/40 %
Base Number Matches	1

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EURO

QUARTZ

Miniature 11.4 x 9.6 x 4.7mm 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

DESCRIPTION

EM44GT 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:

EM44GT

VEM44GT

1.25MHz to 156.0MHz

Squarewave, HCMOS

<±1.0ppm 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

(Partial

list)

See table

±1.0 ppm max. first year

±0.3 ppm max. ±5% change

±0.3 ppm max. ±10% change

±1.0ppm max. for one reflow

(Measured

after 24 hours)

±3ppm minimum

+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

5ms typical, 10ms max.

See table below

15pF

-55~+125°C

EM44GT Series TCXO

HCMOS, 6 pad SMD, MHz Range

EM44GT - OUTLINES AND DIMENSIONS

Operating Temperature Range:

Frequency Stability

vs. Ageing:

vs. Voltage Change:

vs. Load Change:

vs. Reflow (SMD type):

Mechanical Frequency Tuning:

Supply Voltage:

Output Logic Levels:

Rise and Fall Times:

Duty Cycle:

Start-up Time:

Current Consumption:

Output Load:

Storage Temperature:

INPUT VOLTAGE & CURRENT CONSUMPTION

Input Voltage/

Frequency

8.192MHz

10.0MHz

77.760MHz

155.520MHz

+2.8V

2mA

3mA

14mA

26mA

+3.0

+3.3V

2mA

4mA

17mA

35mA

+5.0 V

5mA

7mA

32mA

50mA

SSB PHASE NOISE at 25°C

FREQUENCY STABILITY

Frequency Stability (ppm)

0 ~ +50

-10 ~ +60

Temperature

Range (°C)

-20 ~ +70

-30 ~ +75

-40 ~ +85

±0.5

ASK

±1.0

±1.5

±2.0

±2.5

Part =

M44GT33

Offset

at 10.0Mhz

(dBc/Hz)

at 155.250Mhz

(dBc/Hz)

10Hz

-115

-72

100Hz

-135

-110

1kHz

-148

-125

10kHz

-152

-132

100kHz

-155

-125

PART NUMBERING PROCEDURE

Example:

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

EM44GT33-38.880-2.5/-30+75

VEM44GT 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: ±6.0 ppm min. (Vcon = +4.5V±1.0V)

Slope Polarity:

Positive

(increase of control voltage increases

output frequency.)

Input Impedance:

50k minimum

Modulation Bandwidth: 20kHz minimum

Linearity:

±10% maximum

Series Description

TCXO = EM44GT

VCTCXO = VEM44GT

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.

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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