VEM44GS28-32.768K-2.5-30 EUROQUARTZ [EUROQUARTZ limited], VEM44GS28-32.768K-2.5-30 Datasheet

VEM44GS28-32.768K-2.5-30

Manufacturer Part Number

VEM44GS28-32.768K-2.5-30

Description

Clipped Sinewave, 4 Pad FR4 substrate SMD

Manufacturer

EUROQUARTZ [EUROQUARTZ limited]

Datasheet

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SPECIFICATION

FREQUENCY STABILITY

CURRENT CONSUMPTION

DESCRIPTION

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

EURO

EM44S series TCXOs are packaged in the industry-standard 11.4 x

9.6 x 4.7mm SMD package. With clipped sinewave output, close

tolerances are available from ±0.5ppm over 0° to 50°C or ±1ppm

over -40° to +85°C. The part has low power consumption.

Product Series Code

Frequency Range:

Output Waveform:

Initial Calibration Tolerance**:

Standard Frequencies:

Operating Temperature Range:

Frequency Stability

Supply Voltage:

Output Voltage Level:

Start-up Time:

Current Consumption:

Output Load:

Harmonic Distortion:

SSB Phase Noise:

Output Format:

Storage Temperature:

Frequency Range

10.0MHz to 13MHz

13.1MHz to 20MHz

20.1MHz to 27MHz

Temperature

Industry-standard SMD package 11.4 x 9.6 x 4.7mm

Close tolerance stabilities from ±0.5ppm over 0° to +50°C

±1ppm over -40 to +85°C

Low power consumption

RoHS compliant

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

Range (°C)

Frequency Stability (ppm)

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:

+3.0 V

1.3mA

1.5mA

2.0mA

±0.5

+5.0 V

ASK

2.0mA

2.2mA

2.5mA

±1.0

EM44GS

VEM44GS

10.0MHz to 27.0MHz

Clipped Sinewave

<±1ppm at 25°C

10.0, 12.80, 13.0, 14.40,

15.36, 16.384, 19.2, 19.440,

and 19.68MHz (Partial list)

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)

+2.8, +3.0 or +5.0Volts

(Specify when ordering)

0.8V p-p minimum

2ms typical, 5ms max.

See table below

10kOhm//10pF ±10%

-10dB typical, -7dB max.

See table

DC block, AC coupled

-50° to +100°C

±1.5

Clipped Sinewave, 4 Pad FR4 substrate SMD

±2.0

±2.5

info@euroquartz.co.uk

PHASE NOISE

EM44GS - OUTLINES AND DIMENSIONS

VEM44GS VOLTAGE CONTROL SPECIFICATION

PART NUMBERING PROCEDURE

Series Description

TCXO = EM44GS

VCTCXO = VEM44GS

Supply Voltage

Frequency (MHz)

Stability over OTR (±ppm)

Operating Temperature Range (OTR) (°C)

Lower and upper limits.

Example:

Control Voltage:

Frequency Deviation:

Slope Polarity:

Input Impedance:

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

Linearity:

SSB Phase Noise

at 25°C

28 = 2.8 VDC

3 = 3.0 VDC

5 = 5.0 VDC

EM44GS

(dBc/Hz)

EM44GS Series

13MHz

Offset

EM44GS3-19.44-2.5/-30+75

(Hz)

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.)

1.0M

10% max.

-80

min.

www.euroquartz.co.uk

-115

100

-135

-148

10k

TCXO

100k

-150

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