EURO
QUARTZ
LVDS-LVPECL-CMOS Differential Oscillator
FEATURES
LVDS - LVPECL - CMOS outputs available
Low phase noise - Low phase jitter
Internal 0.01µF SMD decoupling capacitor option
Low Allen deviation
High Frequency Fundamental Mode Crystal
Extended Industrial temperature range
DFXO OSCILLATORS
20MHz to 300MHz
Page 1 of 3
OUTLINE & DIMENSIONS
DESCRIPTION
The DFXO series, 7 x 5mm SMD differential output oscillator is
designed for applications requiring low jitter and ultra high frequency
differential poutputs in a small footprint. Offered at frequencies from
20MHz to 300MHz with operation over a wide temperature range
(-40° to +105°C). No external decoupling capacitor is required with
optional internal capacitor.
APPLICATIONS
Military & Aerospace
Avionics
Communications
Networking
SPECIFICATION
Frequency Range:
Supply Voltage
1
:
Operating Temperature:
Shock, survival:
Vibration, Survival:
20MHz to 300MHz
+3.3Volts ±10%
(+2.5V ±10% available)
-40° to +85°C
5,000g 0.3ms, ½ sine
20g, 10-2000Hz swept sine
PACKAGING OPTIONS
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V :
Storage Temperature:
Maximum Process Temperature:
ESD Protection Human Body Model
DD
DFXO:
-0.5Volts to 1.6 Volts
-65° to +150°C
260°C for 10 seconds
2kV.
Tray Pack
Tape and Reel per EIA 481
ENABLE/DISABLE OPTIONS (T/N)
TERMINATIONS
Designation
SM1
SM3
SM5
Termination
Gold Plated (Pb Free)
Solder dipped
Solder dipped (Pb Free)
There are two Enable/Disable options, T and N. THe 'T' version has a
Tri-state output and continues to oscillate internally when the output
is put into the High Z state. As a result, when re-enabled, the
oscillator does not have to restart and output with a stable frequency
resumes almost immediately. The 'N' version does not have PIN 2
connected internally and so has no enable/disable function. The
following table describes the Enable/Disable option 'T'.
ENABLE
(Pin 1 High)
Output
Oscillator
Current
Frequency Output
Oscillates
Normal
DISABLE
(Pin 1 Low)
High Z State
Oscillates
Lower than normal
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
EURO
QUARTZ
LVDS-LVPECL-CMOS Differential Oscillator
SPECIFICATIONS TABLE
DFXO OSCILLATORS
20MHz to 300MHz
Page 2 of 3
Parameter
Frequency Stability
Ageing
Calibration Tolerance
Frequency Tolerance (Total)
LVDS Output
Parameter
Output Differential Voltage
VDD Magnitude Change
Output High Voltage
Output Low Voltage
Offset Voltage
Offset Magnitude Change
Power-off Leakage
Short Circuit Current (Output)
Rise Time (Differential Clock)
Fall Time (Differential Clock)
Supply Current (Outputs Loaded)
Duty Cycle (Output Clock)
LVPECL Output
Parameter
Output High Voltage
Output Low Voltage
Rise Time
Fall Time
Supply Current (Outputs Loaded)
Duty Cycle (Output Clock)
CMOS Output
Parameter
Short Circuit Current
Output Drive Current
(CMOS)
Rise/Fall Time (CMOS)
Output Load (CMOS)
Supply Current (Outputs Loaded)
Duty Cycle (Output Clock)
Timing Jitter
Jitter (Integrated) (LVDS)
Jitter (Period) (LVDS)
Symbol
Units
ppm
ppm
ppm
ppm
ppm
Tightest
±75
±25
±25
±25
Minimum
247
-50
Standard
±100
±50
±5
±50
±50
Typical
355
1.4
Maximum
±150
±100
±100
±100
Maximum
454
50
1.6
1.375
25
±10
-8
1
1
80
60
Conditions/Comments
-40° to +105°C
-40° to +85°C
First year, dependant upon frequency
@25°C, other tolerances available
-40° to +85°C
Conditions/Comments
Symbol
V
DD
∆V
DD
V
OH
V
OL
V
OS
∆V
OS
I
OXD
I
OSD
t
R
t
F
I
DD
Units
mV
mV
V
V
V
mV
µA
mA
ns
ns
mA
%
0.9
1.125
0
1.1
1.2
3
±1
-6
RL = 100Ω
(See Figure 2.)
V
OUT
=V
DD
or GND (V
DD
=0V)
RL = 100Ω
20% to 80%
(See Figures 3 & 4)
*Typical for 125MHz
@1.25V
Conditions/Comments
RL = 50Ω
to (V
DD
- 2V)
See Figure 5.)
20% to 80% (See Figure 6)
20% to 80% (See Figure 6)
@V
DD
-1.3V
Conditions/Comments
V
OH
= V
DD
-0.4V, V
DD
= 3.3V
V
OL
= 0.4V, V
DD
= 3.3V
10% to 90% 3.3V, 15pF
0.2
0.2
40
Minimum
V
DD
-1.025
0.7
0.7
30*
Symbol
Units
Typical
Maximum
V
DD
-1.620
t
R
t
F
I
DD
ns
ns
mA
%
40
Minimum
20
20
0.6
0.5
1.5
1.5
100
60
Symbol
I
OH
I
OL
t
R
t
F
CL
I
DD
%
Units
mA
mA
mA
ns
pF
mA
Typical
±50
25
25
1.5
Maximum
15
40
40
60
0.3
2
0.4
(See Figure 1)
200MHz maximum
@50% V
DD
125MHz (12kHz to 20MHz RMS)
125MHz (10,000 cycles RMS)
ps
ps
Phase Noise - 125MHz
Typical (LVDS)
Offset Frequency
dBc/Hz
@10Hz
-85
@100Hz
-110
@1kHz
-133
@10kHz
-143
@100kHz
-148
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
EURO
QUARTZ
LVDS-LVPECL-CMOS Differential Oscillator
HOW TO ORDER DFXO OSCILLATORS
DFXO OSCILLATORS
20MHz to 300MHz
Page 3 of 3
DFXO
C
Output Type
C = CMOS
D = LVDS
P = LVPECL
4
Supply Voltage
2 = 2.5V
4 = 3.3V
T
Enable/Disable
Option T or N
SM3
-
300.0M , 50
Frequency
M = MHz
Calibration
Tolerance
@25°
(in ppm)
/ 50 -
Frequency
Stability over
Temp. Range
(in ppm)
/I
Temp. Range
C = -10° to +70°C
I = -40° to +85°C
E = -40° to +105°C
S = Customer specified
Terminations
Blank = SM1
=Gold plated, (Pb free)
SM3 = Solder Dipped
SM5 = Solder Dipped (Pb free)
Figure 1.
ALTERNATIVELY
-- / -- /
100
Total
Frequency
Tolerance
(±ppm)
/I
Temp. Range
C = -10° to +70°C
I = -40° to +85°C
E = -40° to +105°C
S = Customer specified
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
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
