Data Sheet

EURO QUARTZ
DFXO OSCILLATORS
LVDS-LVPECL-CMOS Differential Oscillator
20MHz to 300MHz
Page 1 of 3
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
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 Voltage1:
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 VDD:
Storage Temperature:
Maximum Process Temperature:
ESD Protection Human Body Model
-0.5Volts to 1.6 Volts
-65° to +150°C
260°C for 10 seconds
2kV.
DFXO:
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 [email protected] www.euroquartz.co.uk
EURO QUARTZ
DFXO OSCILLATORS
LVDS-LVPECL-CMOS Differential Oscillator
20MHz to 300MHz
Page 2 of 3
SPECIFICATIONS TABLE
Parameter
Symbol
Frequency Stability
Units
Tightest
Standard
Maximum
ppm
±75
±100
±150
-40° to +105°C
ppm
±25
±50
±100
-40° to +85°C
Ageing
ppm
Calibration Tolerance
ppm
±25
±50
±100
@25°C, other tolerances available
Frequency Tolerance (Total)
ppm
±25
±50
±100
-40° to +85°C
VDD
Units
mV
Minimum
247
Typical
355
Maximum
454
∆VDD
mV
-50
Output High Voltage
VOH
V
Output Low Voltage
VOL
V
0.9
1.1
Offset Voltage
V
V
1.125
1.2
0
LVDS Output
Parameter
Output Differential Voltage
Symbol
VDD Magnitude Change
OS
±5
Conditions/Comments
First year, dependant upon frequency
50
1.4
1.375
∆VOS
mV
3
25
Power-off Leakage
IOXD
µA
±1
±10
Short Circuit Current (Output)
IOSD
mA
-6
-8
Rise Time (Differential Clock)
tR
ns
0.2
0.7
1
0.2
tF
ns
Supply Current (Outputs Loaded)
IDD
mA
Duty Cycle (Output Clock)
%
LVPECL Output
Parameter
Output High Voltage
Symbol
Minimum
VOUT=VDD or GND (VDD=0V)
RL = 100Ω 20% to 80%
(See Figures 3 & 4)
0.7
1
30*
80
*Typical for 125MHz
60
@1.25V
40
Units
RL = 100Ω
(See Figure 2.)
1.6
Offset Magnitude Change
Fall Time (Differential Clock)
Conditions/Comments
Typical
Maximum
Conditions/Comments
VDD -1.025
Output Low Voltage
V
DD
RL = 50Ω to (VDD - 2V)
See Figure 5.)
-1.620
Rise Time
tR
ns
0.6
1.5
20% to 80% (See Figure 6)
Fall Time
tF
ns
0.5
1.5
20% to 80% (See Figure 6)
Supply Current (Outputs Loaded)
IDD
mA
Duty Cycle (Output Clock)
100
%
40
60
@VDD -1.3V
CMOS Output
Parameter
Short Circuit Current
Symbol
Units
mA
Minimum
Typical
±50
Output Drive Current
IOH
mA
20
25
VOH = VDD -0.4V, VDD = 3.3V
20
25
VOL = 0.4V, VDD = 3.3V
(CMOS)
IOL
mA
Rise/Fall Time (CMOS)
tRtF
ns
Output Load (CMOS)
CL
pF
Supply Current (Outputs Loaded)
IDD
mA
Duty Cycle (Output Clock)
%
Maximum
1.5
Conditions/Comments
10% to 90% 3.3V, 15pF
15
40
(See Figure 1)
40
200MHz maximum
60
@50% VDD
0.4
125MHz (12kHz to 20MHz RMS)
Timing Jitter
Jitter (Integrated) (LVDS)
ps
0.3
Jitter (Period) (LVDS)
ps
2
Phase Noise - 125MHz
Typical (LVDS)
125MHz (10,000 cycles RMS)
Offset Frequency
@10Hz
@100Hz
@1kHz
@10kHz
@100kHz
dBc/Hz
-85
-110
-133
-143
-148
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
EURO QUARTZ
DFXO OSCILLATORS
LVDS-LVPECL-CMOS Differential Oscillator
20MHz to 300MHz
Page 3 of 3
HOW TO ORDER DFXO OSCILLATORS
DFXO
C
Output Type
C = CMOS
D = LVDS
P = LVPECL
Figure 1.
4
T
Supply Voltage
2 = 2.5V
4 = 3.3V
Enable/Disable
Option T or N
SM3
-
300.0M , 50
Terminations
Blank = SM1
=Gold plated, (Pb free)
SM3 = Solder Dipped
SM5 = Solder Dipped (Pb free)
Frequency
M = MHz
/ 50 -
Calibration
Tolerance
@25°
(in ppm)
ALTERNATIVELY
-- / -- /
Frequency
Stability over
Temp. Range
(in ppm)
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
/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 [email protected] www.euroquartz.co.uk
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