Surface Mount VCXO

ECM Electronics Limited, Penmaen House, Ashington, West Sussex, RH20 3JR, UK

Tel: +44(0)1903 892810: Fax: +44(0)1903 892738. Email: ecm@ecmelectronics.co.uk

Although we have attempted to accurately reflect the products we market. ECM reserve the right without prior notice to

discontinue any product or make design changes we believe necessary.

Issue 1

ECM VF194 / 294

Environmental & Mechanical

Mechanical

Shock

Mil STD 202 Method 213

Cond E

Thermal

Shock

Mil STD 883 Method 1011

Cond A

Vibration

MIL-STD-883 Method 2007

Cond A

Soldering

230

Hermetic

Seal

Leak rate less than 5x10

-8

Atm.cc/s of helium

Parameter

VF194 – VF294

Notes

Frequency Range

1.54MHz to 160.0MHz

Stability

+/-25ppm

Vs. Temp

Supply Voltage

5V +/-5%

3.3V +/-5%

Standard

Option

Supply Current

30mA

No Load

Load

10TTL gates or 50pF

Duty Cycle

40 / 60 or 45/55

Specify

Rise & Fall Times

6nS max

Logic “1” Level

0.9Vcc min

Max Load

Logic “0” Level

0.1Vcc max

Max Load

Start Up Time

10mS max

2mS Typ

Phase Jitter

1pS max

20pS max

<52MHz

>52MHz

Modulation BW

10kHz @ -3dB min

Input Impedance

50K ohm min

Fm<10kHz

Control Voltage

0V to 5.0V

0V to 3.3V

Vcc 5.0V

Vcc 3.3V

Pulling Range

+/- 50ppm

Or Specify

Linearity

+/-20%

Setability (Vc for

center frequency)

2.50V typ

1.65V typ

Vcc 5.0V

Vcc 3.3V

Tristate Fuction

Input HIGH (>2.5V) or floating: ACTIVE

Input LOW (<0.5V): INFINITE IMPEDANCE

Enable Disable

100ns max

Operating Temp

0

-45

Standard

Option

Part Numbering

VF194 /294 S H L

1 50 155.52M

Type

Stability S = 20ppm Blank = Std

Duty Cycle H = 45/55 Blank = 46/60

Supply Voltage L = 3.3V Blank = 5.0

Temperature Range 1 = -40

Blank = Standard

Pulling Range Blank = Std or specify

Frequency

§ Very Low Phase Jitter

§ Industrial Temperature Range

§ Miniature Ceramic Package

§ SMD Tri-state Oscillator

§ 3.3V Supply

Pin (VF194)

1

2

3

Connection

Vc

N/C

GND

Pin (VF194)

6

5

4

Connection

O/P

Tri

Vcc

Pin (VF294)

1

2

3

Connection

Vc

Tri

GND

Pin (VF294)

6

5

4

Connection

Vcc

N/C

O/P

A

B

C

D

E

F

G

7.7

5.2

2.3

1.14

5.08

1.27

3.93

Dimensions in mm