Datasheet > VEM44K30-26.000-3.0/-20+70

VEM44K30-26.000-3.0/-20+70

更新时间： 2023-05-15 00:00:00

品牌	Logo	应用领域
EUROQUARTZ		/
页数	文件大小	规格书
1页	122K
描述
HCMOS Output Clock Oscillator

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VEM44K30-26.000-3.0/-20+70 数据手册

QUARTZ

EURO

TCXO

EM44K ULTRA-LOW CURRENT

HCMOS 11.4 x 9.6 x 3.0mm SMD

Highly stable CMOS TCXO with ultra-low supply current

Industry-standard SMD package

Consumes less than 4mA at 20.0MHz with 3.3V supply

Low phase noise

RoHS compliant

OUTLINES AND DIMENSIONS

DESCRIPTION

EM44K TCXOs and VCTCXOs are packaged in a 11.4 x 9.6 x 3.0mm

ceramic SMD package. The part offers the stability of a TCXO and the

design convenience of HCMOS output with ultra-low current

consumption.

SPECIFICATION

Product Code

TCXO:

EM44K

VCTCXO:

VEM44K

Frequency Range:

Output Waveform:

12.8MHz to 26.0MHz

HCMOS

Initial Calibration Tolerance:

Standard Frequencies:

<±2.0ppm at +25°±2°C

12.8, 13.0, 14.4, 15.36, 16.0,

16.384, 16.8, 19.2, 19.44,

19.68, 20.0 and 26.0MHz

(

Operating Temperature Range:

Frequency Stability

vs. Temperature

vs. Ageing:

±1.0 ppm max. first year

vs. Voltage Change:

vs. Load Change:

vs. Reflow (SMD type):

±1.0 ppm max. ±10% change

±0.3 ppm max. ±10% change

±1.0ppm max. for one reflow

(

)

Supply Voltage:

+2.8, 3.0 or 3.3 Volts

Current Consumption:

Output Logic Levels:

Rise and Fall Times:

Duty Cycle:

4ns typical with 15pF load

50%±5%

Start-up Time:

Output Load:

5ms typical, 10ms max.

15pF

Fanout (drive capability):

12mA typical, 17mA max.

(at TTL level)

RMS Period Jitter:

3ps max. (1 Sigma, 1000

samples; capacitive coupling

between Vdd and Ground).

RoHS compliant and pB free

16mm tape, 8mm pitch

1000 pieces per reel.

VEM44K VOLTAGE CONTROL SPECIFICATION

Control Voltage:

Slope Polarity:

±5 to ±12ppm for +1.5 ±1.5 Volts

Positive

RoHS Status:

Packaging:

Linearity:

6% typical, 10% maximum

CURRENT CONSUMPTION

Input Voltage

+3.0V

Frequency

+2.8V

+3.3V

SSB PHASE NOISE at 25°C

12.800MHz

13.000MHz

14.400MHz

16.384MHz

19.200MHz

19.440MHz

20.000MHz

26.000MHz

2.3mA typ.

2.5mA typ.

2.6mA typ.

2.8mA typ.

3.2mA typ.

3.6mA typ.

2.4mA typ. 2.6mA typ.

2.6mA typ. 2.8mA typ.

2.8mA typ. 3.1mA typ.

3.0mA typ. 3.2mA typ.

3.3mA typ. 3.6mA typ.

3.4mA typ. 3.7mA typ.

3.8mA typ. 4.1mA typ.

Offset

100Hz

1kHz

10kHz

100kHz

1MHz

Part =

VEM44K30

at 13.000MHz

(dBc/Hz)

-80

-110

-130

-135

-142

PART NUMBER FORMAT

Example:

EM44K33-20.000-2.5/-30+75

FREQUENCY STABILITY OVER TEMPERATURE

Series Description

TCXO = EM44K

VCTCXO = VEM44K

Stability (ppm)

0 ~ +50

±1.0

±2.0

±2.5

±3.0

±4.0

±5.0

Supply Voltage

28=2.8V, 30=3.0V, 33=3.3VDC

Frequency (MHz)

Stability over OTR (±ppm)

Operating Temperature Range (OTR)

Lower and upper limits (°C)

-10 ~ +60

-20 ~ +70

-30 ~ +75

-40 ~ +85

ASK

Temp.

Range (°C)

ASK

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

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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