EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk

VCXO

8 pin Dual-in-Line

GF8 CMOS

PART NUMBERING

Example:

3GF8B-80N-156.25

Supply Voltage

3 = +3.3V

Series Designator

GF8

Stability over temperature range

(See table)

Pullability in ±ppm

Pullability determinator

N = minimum

M = maximum

T = Typical

Frequency in MHz

DESCRIPTION

Frequency range 50.01MHz to 200MHz (15pF load)

Frequency range 50.01MHz to 320MHz (10pF load)

LVCMOS Output

Supply Voltage 3.3 VDC

Ultra low jitter less than 1ps

Frequency Range

Load 15pF:

50.01MHz to 200.0MHz

Load 10pF:

50.01MHz to 320.0MHz

Supply Voltage:

3.3 VDC ±5%

Output Logic:

LVCMOS

Integrated Phase Jitter:

0.4ps typical, 0.5ps maximum

(for 155.250MHz)

Period Jitter RMS:

3.0ps typical (for 155.250MHz)

Period Jitter Peak to peak:

20ps typical (for 155.250MHz)

Phase Noise:

See table below

Initial Frequency Accuracy:

Tune to the nominal frequency

with Vc= 1.65 ±0.2VDC

Output Voltage HIGH (1):

90% Vdd minimum

Output Voltage LOW (0):

10% Vdd maximum

Pulling Range:

From ±30ppm to ±150ppm

Temperature Stability:

See table

Output Load:

15pF

Start-up Time:

10ms maximum, 5ms typical

Duty Cycle:

50% ±5% measured at 50% Vdd

Rise/Fall Times:

0.7ns typical (15pF load)

Current Consumption

<100MHz:

30mA maximum (15pF load)

>100MHz:

40mA maximum (15pF load)

Linearity:

10% maximum, 6% typical

Modulation Bandwidth:

25kHz minimum

Input Impedance:

60kW minimum

Slope Polarity:

Monotonic and Positive. (An

(Transfer function)

increase of control voltage

always increases output

frequency.)

Storage Temperature:

-50° to +100°C

Ageing:

±5ppm per year maximum

Enable/Disable (Tristate):

Not available (4 pad package)

RoHS Status:

Fully compliant

SPECIFICATION

Stability Code

FREQUENCY STABILITY

A

25

0°~+70°C

B

50

0°~+70°C

C

100

0°~+70°C

D

25

-40°~+85°C

E

50

-40°~+85°C

F

100

-40°~+85°C

If non-standard frequency stability is required

Use ‘I’ followed by stability, i.e. I20 for ±20ppm

Stability ±ppm

GF8 VCXOs, are packaged in an industry-standard, 8 pin Dual in Line

package. GF8 VCXOs provide excellent phase jitter performance, less

than 1ps.

Temp. Range

10Hz

-62dBc/Hz

100Hz

-92dBc/Hz

1kHz

-120dBc/Hz

10kHz

-132dBc/Hz

100kHz

-128dBc/Hz

1MHz

-140dBc/Hz

10MHz

-150dBc/Hz

Offset

Frequency 155.25MHz

PHASE NOISE