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

EMW14GT Series

DESCRIPTION

14 pin DIL, hermetically-sealed package

Frequency range: 200.01MHz to 800.0MHz

Supply voltage 3.3 Volts

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

RoHS compliant

EMW14GT series TCXOs are packaged in a standard 14 pin DIL

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.

EMW14GT - OUTLINES AND DIMENSIONS

Stability (ppm)

±0.5

±1.0

±1.5

±2.0

±2.5

±3.0

Temp.

Range (°C)

0 ~ +50

P

P

P

P

P

P

-10 ~ +60

ASK

P

P

P

P

P

-20 ~ +70

X

P

P

P

P

P

-30 ~ +75

X

P

P

P

P

P

-40 ~ +85

X

X

X

ASK

ASK

P

P

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

SPECIFICATION

Product Series Code

TCXO:

EMW14GT

VCTCXO:

VEMW14GT

Frequency Range:

200.01MHz to 800.0MHz

Output Waveform:

Squarewave, HCMOS

Initial Calibration Tolerance:

<±2.0ppm at +25°±2°C

Standard Frequencies:

200.0, 204.8, 311.04, 400.0,

409.6 and 622.08MHz

(Partial list)

Mechanical Frequency Tuning:

Not implemented

Operating Temperature Range:

(see table)

Frequency Stability

(see table)

vs. Ageing:

±1.0 ppm max. first year

vs. Voltage Change:

±0.3 ppm max. ±5% change

vs. Load Change:

±0.3 ppm max. ±10% change

vs. Reflow (SMD type):

±1.0ppm max. for one reflow

(Measured after 24 hours)

Supply Voltage:

+3.3 Volts

Output Logic Levels:

Logic High: 90% Vdd min.

Logic Low: 10% Vdd max.

Current Consumption:

65mA max. (Freq. dependant)

Rise and Fall Times:

1.2ns typical

Duty Cycle:

50%±5%

Start-up Time:

5ms typical, 10ms max.

Current Consumption:

See table below

Output Load:

15pF

Storage Temperature:

-55~+125°C

PART NUMBERING SCHEDULE

Example:

EMW14GT33-409.60-2.5/-30+75

Supply Voltage

33 = 3.3 VDC

Frequency (MHz)

Stability over OTR (±ppm)

Operating Temperature Range (OTR) (°C)

Lower and upper limits

Series Description

TCXO = EMW14GT*

VCTCXO = VEMW14GT

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:

2M

minimum

Modulation Bandwidth: 25kHz minimum

Linearity:

±10% maximum

VEMW14GT VOLTAGE CONTROL SPECIFICATION

FREQUENCY STABILITY

Offset

10Hz

100Hz

1kHz

10kHz

100kHz

Part =

EMW14GT33

at 622.080MHz

(dBc/Hz)

-50

-77

-102

-115

-108

SSB PHASE NOISE at 25°C

*Note: 'G' indicates part is RoHS compliant

HCMOS 14 pin DIL, 'W' Group