QUARTZ
EURO
G8 CMOS
VCXO
8 pin Dual-in-Line
Frequency range 0.625MHz to 50.0MHz
CMOS/TTL Output
Supply Voltage 5.0 V or 3.3 VDC
Integrated Phase Jitter 1ps typical
DESCRIPTION
G8 VCXOs, are packaged in an industry-standard, 8 pin Dual in Line
package. Typical phase jitter for G series VCXOs is <1ps, output
CMOS/TTL. G series VCXOs use fundamental mode crystal
osccillators. Applications include phase lock loop, SONET/ATM, set-
top boxes, MPEG , audio/video modulation, video game consoles and
HDTV.
SPECIFICATION
Frequency Range
Vdd = +3.3VDC:
Vdd = +5.0VDC:
Supply Voltage:
0.625MHz to 50.0MHz
1.0MHz to 50.0MHz
+3.3 VDC ±5% or +5.0VDC±5%
TTL/HCMOS
Output Logic:
Integrated Phase Jitter:
Period Jitter RMS:
Period Jitter Peak to Peak:
Phase Noise:
1.0ps maximum 12kHz to 20MHz
2.0ps typical
14ps maximum
See table below
Initial Frequency Accuracy
Tune to the nominal frequency with:
+3.3VDC:
Vc= 1.65V ±0.2V
Vc= 2.5V ±0.2V
90% Vdd minimum
10% Vdd maximum
+5.0 VDC:
Output Voltage HIGH (1):
Output Voltage LOW (0):
Control Voltage Centre
+3.3VDC:
1.65V
2.5V
+5.0VDC:
Control Voltage Range
+3.3VDC:
0.3V to 3.0V
0.5V to 4.5V
+5.0VDC:
PHASE NOISE
Pulling Range
+3.3VDC
+5.0VDC:
±80ppm to ±120ppm (standard)
±80ppm to ±150ppm
(±200ppm available)
See table
CMOS = 15pF, TTL = 2 gates
10ms maximum, 5ms typical
50% ±5% measured at 50% Vdd
0.7ns typical (15pF load)
10 to 45mA, frequency
dependent
Offset
Frequency 27.0MHz
10Hz
100Hz
1kHz
10kHz
1MHz
-70dBc/Hz
-105dBc/Hz
-132dBc/Hz
-142dBc/Hz
-150dBc/Hz
Temperature Stability:
Output Load:
Start-up Time:
Duty Cycle:
Rise/Fall Times:
Current Consumption:
Linearity:
10% maximum, 6% typical
10kHz minimum
1 MW minimum
Monotonic and Positive. (An
increase of control voltage
always increases output
frequency.)
Modulation Bandwidth:
Input Impedance:
Slope Polarity:
(Transfer function)
PART NUMBERING
Storage Temperature:
Ageing:
RoHS Status:
-50° to +100°C
±5ppm per year maximum
Fully compliant
Example: 3 G8 B-80N-27.000
Supply Voltage
3 = +3.3V
5 = +5.0V
Series Designator
G8
FREQUENCY STABILITY
Temp. Range
Stability Code Stability ±ppm
Stability over temperature range
(See table)
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
Pullability in ±ppm
Pullability determinator
N = minimum
M = maximum
T = Typical
F
100
If non-standard frequency stability is required
Use ‘I’ followed by stability, i.e. I20 for ±20ppm
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