QUARTZ
EURO
GF8 CMOS
VCXO
8 pin Dual-in-Line
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
DESCRIPTION
GF8 VCXOs, are packaged in an industry-standard, 8 pin Dual in Line
package. GF8 VCXOs provide excellent phase jitter performance, less
than 1ps.
SPECIFICATION
Frequency Range
Load 15pF:
Load 10pF:
Supply Voltage:
Output Logic:
50.01MHz to 200.0MHz
50.01MHz to 320.0MHz
3.3 VDC ±5%
LVCMOS
Integrated Phase Jitter:
0.4ps typical, 0.5ps maximum
(for 155.250MHz)
Period Jitter RMS:
Period Jitter Peak to peak:
Phase Noise:
3.0ps typical (for 155.250MHz)
20ps typical (for 155.250MHz)
See table below
Initial Frequency Accuracy:
Tune to the nominal frequency
with Vc= 1.65 ±0.2VDC
90% Vdd minimum
10% Vdd maximum
From ±30ppm to ±150ppm
See table
Output Voltage HIGH (1):
Output Voltage LOW (0):
Pulling Range:
Temperature Stability:
Output Load:
15pF
PHASE NOISE
Start-up Time:
Duty Cycle:
Rise/Fall Times:
Current Consumption
<100MHz:
10ms maximum, 5ms typical
50% ±5% measured at 50% Vdd
0.7ns typical (15pF load)
Offset
Frequency 155.25MHz
10Hz
100Hz
1kHz
10kHz
100kHz
1MHz
10MHz
-62dBc/Hz
-92dBc/Hz
30mA maximum (15pF load)
40mA maximum (15pF load)
10% maximum, 6% typical
25kHz minimum
>100MHz:
-120dBc/Hz
-132dBc/Hz
-128dBc/Hz
-140dBc/Hz
-150dBc/Hz
Linearity:
Modulation Bandwidth:
Input Impedance:
Slope Polarity:
60kW minimum
Monotonic and Positive. (An
increase of control voltage
always increases output
frequency.)
(Transfer function)
Storage Temperature:
Ageing:
Enable/Disable (Tristate):
RoHS Status:
-50° to +100°C
±5ppm per year maximum
Not available (4 pad package)
Fully compliant
FREQUENCY STABILITY
Temp. Range
Stability Code Stability ±ppm
PART NUMBERING
A
B
C
D
E
25
50
100
25
50
0°~+70°C
0°~+70°C
0°~+70°C
-40°~+85°C
-40°~+85°C
-40°~+85°C
Example: 3GF8B-80N-156.25
Supply Voltage
3 = +3.3V
Series Designator
GF8
Stability over temperature range
(See table)
F
100
If non-standard frequency stability is required
Use ‘I’ followed by stability, i.e. I20 for ±20ppm
Pullability in ±ppm
Pullability determinator
N = minimum
M = maximum
T = Typical
Frequency in MHz
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