VEM38T3-38.880-2.5-30 datasheet, PDF

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VEM38T3-38.880-2.5-30: DescriptionHCMOS, 14 pin DIL compatible, MHz Range; File Size336KB，1 Pages; ManufacturerEuroquartz; Websitehttp://www.euroquartz.co.uk/

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VEM38T3-38.880-2.5-30 Overview

HCMOS, 14 pin DIL compatible, MHz Range

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EURO

QUARTZ

Package pin compatible with 14 pin DIL

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

EM38T Series TCXO

HCMOS, 14 pin DIL compatible, MHz Range

EM38T - OUTLINES AND DIMENSIONS

DESCRIPTION

EM38T series TCXOs are packaged in a conventional through hole-

mounted package compatible with 14 pin DIL. 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:

EM38T

VEM38T

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

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 =

M38T33

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 SCHEDULE

Example:

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

EM38T33-38.880-2.5/-30+75

VEM38T 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 = EM38T

VCTCXO = VEM38T

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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Description	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range	HCMOS, 14 pin DIL compatible, MHz Range

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