This part is no longer available from Fox, please contact IDT for this product.
Model: FVXO-LC72 SERIES
LVDS 7 x 5mm 2.5V V C X O
Features
X
TREMELY
Low Jitter
Low Cost
X
PRESS
Delivery
Frequency Resolution to six decimal places
Absolute Pull Range (APR) of ±50ppm
-20 to +70°C or -40 to +85°C operating temperatures
Tri-State Enable / Disable Feature
Industry Standard Package, Footprint & Pin-Out
Fully RoHS compliant
Gold over Nickel Termination Finish
Serial ID with Comprehensive Traceability
V
C
V
DD
Enable / Disable
Freq: 0.75 MHz to 1.0GHz
Rev. 03/12/2008
Applications
•
•
•
•
•
•
•
•
•
ANY application requiring an oscillator
SONET
Ethernet
Storage Area Network
Broadband Access
Microprocessors / DSP / FPGA
Industrial Controllers
Test and Measurement Equipment
Fiber Channel
Frequency
Control
Circuit
X
PRESS
O
ASICs
GND
FOX
OUTPUT
For more information -- Click on the drawing
Contents
page
Description
The Fox X
PRESS
O Crystal Oscillator is a
breakthrough in configurable Frequency Control
Solutions. X
PRESS
O utilizes a family of
proprietary ASICs, designed and developed by
Fox, with a key focus on noise reduction
technologies.
The 3
rd
order Delta Sigma Modulator reduces
noise to the levels that are comparable to
traditional Bulk Quartz and SAW oscillators.
The ASICs family has ability to select the output
type, input voltages, and temperature
performance features.
With the X
PRESS
lead-time, low cost, low noise,
wide frequency range, excellent ambient
performance, XpressO is an excellent choice
over the conventional technologies.
Finished X
PRESS
O parts are 100% final tested.
Model Selection & Part Number Guide
2
Electrical Characteristic
3
Absolute Maximums
3
Output Wave Characteristics
4
Phase Noise
5
Jitter
5
Pin Assignment
6
Recommended Circuit
6
Reflow
6
Mechanical Drawing and Pad Layout
7
Tape and Reel Specification
8
Label
8
Traceability – LOT Number & Serial Identification 9
RoHS Material Declaration
10
SGS Report
11 & 12
Mechanical Test
13
Burn-In Test
13
MTTF / FITS calculations
14
15
Other X
PRESS
O Links
Fox Contact Information
15
Page 1 of 15
FOXElectronics
5570 Enterprise Parkway Fort Myers, Florida 33905 USA +1.239.693.0099 FAX +1.239.693.1554 http://www.foxonline.com
EMEA
Tel/Fax: +44 .1767.312632 |
Asia
Hong Kong Tel: +852.2854.4285 Fax +852.2854.4282
Taiwan
Tel: +886.2.22073427 Fax +886.2.22073486 |
Japan
Tel: +81.3.3374.2079 Fax: +81.3.3374.5221
© 2008 FOX ELECTRONICS | ISO9001:2000 Certified
This part is no longer available from Fox, please contact IDT for this product.
FVXO-LC72
Series
Model Selection Guide & Fox Part Number
STEP #1:
Customer selects the Model Description and provides to Fox Customer Service
Model Description
F V X O – L C 7 2 B R – 900.25
Frequency (in MHz)
Resolutions to 6 places
past the decimal point
H
= HCMOS
C
= Ceramic
Q
= Quartz
L
= LVDS
P
= LVPECL
X
= HCMOS
(comp 2
nd
Output)
5
= 5 x 3.2mm
7
= 7 x 5mm
3
= 3.3 V
2
= 2.5 V
R
= -40°C to +85°C
B
= ± 50-ppm Absolute Pull Range
blank
= -20°C to +70°C
STEP #2:
The Fox Customer Service team provides a customer specific Part Number
for use on their Bill Of Materials (BOM).
Fox Part Number
The 1
st
Field
Product Code #
793 = FVXO–HC5
792 = FVXO–HC7
797 = FVXO–LC5
794 = FVXO–LC7
795 = FVXO–PC5
796 = FVXO–PC7
(The assigned Fox Part Number must be on the BOM – not the above Model Description)
(This will ensure receipt of the proper part)
7 9 4 – 900.25 – 1
The 3
rd
Field
Fox Internally Generated Number
The 2
nd
Field
The Customer’s Frequency
(If any specification changes,
the last digits change)
(The same specs for a different customer
also changes the last digits)
This example,
FVXO-LC72BR-900.25
= Voltage Controlled, LVDS Output, Ceramic, 7 x 5mm Package, 2.5V,
±50 PPM Absolute Pull Range, -40 to +85°C Temperature Range, at 900.25 MHz
Absolute Maximum Ratings
(Useful life may be impaired. For user guidelines only, not tested.
Operation is only guaranteed for voltage and temperature specifications in Electrical Characteristics section.)
Parameters
Input Voltage
Operating Temperature
Storage Temperature
Junction Temperature
ESD Sensitivity
Symbol
V
DD
T
AMAX
T
STG
HBM
Condition
Maximum Value
(unless otherwise noted)
Human Body Model
–0.5V to +5.0V
–55°C to +105°C
–55°C to +125°C
125°C
1 kV
Page
2 of 15
© 2008 FOX ELECTRONICS | ISO9001:2000 Certified
This part is no longer available from Fox, please contact IDT for this product.
FVXO-LC72
Series
Electrical Characteristics
Parameters
Frequency Range
Absolute Pull Range
Note 1
Temperature Range
Supply Voltage
Input Current
(@ 100 Ohm LOAD)
Output Load
Start-Up Time
Output Enable / Disable Time
Moisture Sensitivity Level
Termination Finish
T
STG
V
DD
I
DD
Symbol
F
O
APR
T
O
Condition
Maximum Value
(unless otherwise noted)
Standard operating
Optional operating
Storage
Standard
0.75 ~ 20.000 MHz
20.000+ ~ 220.000 MHz
220.000+ ~ 630.000 MHz
630.000+ MHz ~ 1.000 GHz
Standard
T
S
MSL
JEDEC J-STD-20
0.750 MHz to 1.0 GHz
± 50 ppm MIN
-20°C to +70°C
-40°C to +85°C
-55°C to +125°C
2.5 V ± 5%
26 mA
34 mA
44 mA
65 mA
100 Ohms Typ.
10 mS
100 nS
1
Au
Note 1 – Stability is inclusive of 25°C tolerance, operating temperature range, input voltage change, load change, aging, shock and vibration.
Frequency Control (V
C
) Input
--
Parameters
Control Voltage Tuning Slope
2
Control Voltage Linearity
Control Voltage Tuning Range
Modulation Bandwidth
Nominal Control Voltage
1
pin # 1
Symbol
L
VC
V
C
BW
V
CNOM
Condition
0V to V
DD
Maximum Value
(unless otherwise noted)
@ f
0
40 ~ 75 ppm/V Typ
± 10%
0V ~ 2.5V
10 kHz Min
1.25V
2
NOTES:
2
3
Actual slope is affected by frequency and accuracy settings.
For an example of linearity, see the graph below.
(The middle line represents the default Fox factory setting)
FVXO Oscillator Pull
@ 25°C - (range of typical responses)
150.0
Pull from Vc-1.25V (PPM)
100.0
50.0
0.0
-50.0
-100.0
0.
25
0.
75
1.
25
1.
75
2.
25
1.
5
1.
62
5
0.
5
0
0.
12
5
1
1.
12
5
2
2.
12
5
0.
37
5
0.
62
5
0.
87
5
Vc = Voltage Applied to Pin# 1
Page
3 of 15
© 2008 FOX ELECTRONICS | ISO9001:2000 Certified
1.
37
5
1.
87
5
2.
37
5
2.
5
This part is no longer available from Fox, please contact IDT for this product.
FVXO-LC72
Series
Output Wave Characteristics
Parameters
Differential Output Voltage
Output Offset Voltage
Output Symmetry
(See Drawing Below)
Output Enable
(PIN # 2)
Voltage
Output Disable
(PIN # 2)
Voltage
Cycle Rise Time
(See Drawing Below)
Cycle Fall Time
(See Drawing Below)
Symbol
V
OD
V
OS
V
IH
V
IL
T
R
T
F
Condition
0.75 MHz to 1.0 GHz
@ 50% V
P-P
Level
Maximum Value
(unless otherwise noted)
20%~80%
80%~20%
0.4V Typ.
1.25V Typ.
45% ~ 55%
≥
70% V
DD
≤
30% V
DD
400 pS
400 pS
Rise Time / Fall Time Measurements
T
R
OUTPUT 2
T
F
20% to 80
%
50% V
P-P
1.25V Typ.
0.4V Typ.
P-P
OUTPUT 1
Oscillator Symmetry
Ideally, Symmetry should be 50/50 for 1/2 period -- Other expressions are 45/55 or 55/45
OUTPUT 2
Oscillator Symmetry
Ideally, Symmetry should be 50/50 for 1/2 period -- Other expressions are 45/55 or 55/45
50% V
P-P
OUTPUT 2
OUTPUT 1
50% V
P-P
1/2 Period
Period
OUTPUT 1
1/2 Period
Period
Page
4 of 15
© 2008 FOX ELECTRONICS | ISO9001:2000 Certified
This part is no longer available from Fox, please contact IDT for this product.
FVXO-LC72
Series
Phase Noise
0 dBc
-10dBc
-20dBc
-30dBc
-40dBc
-50dBc
-60dBc
212.5 MHz
156.25 MHz
2.5V Phase Noise Graph
(dBc / Hz) vs. offset frequency
Data Collected using HP 3048A
Four Frequencies from Jitter Tables
62.5 MHz only to 2 MHz offset Equipment Limitation
-70dBc
-80dBc
-90dBc
-100dBc
-110dBc
-120dBc
-130dBc
-140dBc
-150dBc
-160dBc
62.5 MHz
622.08 MHz
62.5 MHz
622.08 MHz
212.5 MHz
156.25 MHz
10
100
1k
10k
100k
1M
10M
40M
Offset Frequency
(10Hz to 40MHz)
Jitter is frequency dependent. Below are typical values at select frequencies.
LVDS Phase Jitter & Time Interval Error (TIE)
Frequency
62.5 MHz
156.25 MHz
212.5 MHz
622.08MHz
Phase Jitter
(12kHz to 20MHz)
TIE
(Sigma of Jitter Distribution)
Units
pS RMS
pS RMS
pS RMS
pS RMS
2.12
1.04
1.35
1.30
3.1
3.5
4.2
3.7
Phase Jitter
is integrated from HP3048 Phase Noise Measurement System; measured directly into 50 ohm input; V
DD
= 2.5V.
TIE
was measured on LeCroy LC684 Digital Storage Scope, directly into 50 ohm input, with Amherst M1 software; V
DD
= 2.5V.
Per
MJSQ
spec (Methodologies for Jitter and Signal Quality specifications)
LVDS Random & Deterministic Jitter Composition
Frequency
62.5 MHz
156.25 MHz
212.5 MHz
622.08 MHz
Random (Rj)
(pS RMS)
Deterministic (Dj)
(pS P-P)
Total Jitter (Tj)
(14 x Rj) + Dj
27.6 pS
29.2pS
31.2 pS
27.2 pS
1.35
1.40
1.42
1.18
8.4
9.2
10.9
10.4
Rj and Dj
, measured on LeCroy LC684 Digital Storage Scope, directly into 50 ohm input, with Amherst M1 software.
Per
MJSQ
spec (Methodologies for Jitter and Signal Quality specifications)
Page
5 of 15
© 2008 FOX ELECTRONICS | ISO9001:2000 Certified
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
