FX-500
Low Jitter Frequency Translator
FX-500
Description
The FX-500 is a complete crystal-based frequency translator used in communications applications where low jitter is paramount.
Performance advantages include superior jitter performance, high output frequencies and small package size. Advanced custom
ASIC technology results in a highly robust, reliable and predictable device.
The device is packaged in a 6 pin J-Lead ceramic package with a hermetic seam welded lid.
Features
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Complete Frequency Translator to 77.760 MHz
3.3 Volt or 5.0 Volt Supply
Capable of locking to an 8kHz pulse/ BITS clock
Tri-State Output allows board test
Lock Detect
J-lead Ceramic Package
Advanced Custom ASIC Technology
Absolute Pull Range Performance to ±100 ppm
CMOS output
Commercial or Industrial Temperature Range
EIA Compatible Tape and Reel Packaging
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Applications
Frequency Translation, Clock Smoothing
Telecom - SONET/SDH/ATM
Datacom - DSLAM, DSLAR, Access Nodes
Cable Modem Head End
Base Station - GSM, CDMA
Block Diagram
VCC
(6)
FIN
(1)
LD
(5)
Phase
Detector
& LD
Loop Filter
Tri-State
(2)
VCXO
FOUT
(4)
÷
÷
GND
(3)
Figure 1. Functional block diagram
Page 1 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Specifications
Table 1. Electrical Performance
Parameter
Frequency
Input Frequency
Capture Range (Ordering Option)
Output Frequency
Supply
1
Voltage (Ordering Option)
Current (No Load)
Input Signal
Input Low Level Voltage
Input High Level Voltage
Pulse Width
Output
2
Output High Level Voltage
Ouput Low Level Voltage
Rise Time
Fall Time
Duty Cycle
3
≤ 60 MHz
> 60MHz
Leakage Current of Input
Loop Bandwidth (-3dB), 8kHz input
Jitter, 8kHz to 77.76MHz
rms
p-p
Symbol
F
IN
APR
F
OUT
V
DD
V
DD
I
DD
V
IL
V
IH
Min
0.001
±50
1.0
3.0
4.5
Typical
Maximum
77.76
±100
77.76
Units
MHz
ppm
MHz
V
V
mA
V
V
ns
V
V
ns
ns
%
%
μA
Hz
ps
ps
UI
3.3
5.0
3.6
5.5
40
0.3*V
DD
0.7*V
DD
6
0.9*V
DD
1.8
1.8
45
40
0.1*V
DD
3.0
3.0
55
60
1
10
4.7
44
0.003
V
OH
V
OL
t
R
t
F
D
I
C
BW
-1
1.
A 0.1 μF low frequency tantalum bypass capacitor in parallel with a 0.01 μF high frequency ceramic capacitor is recommended.
2.
Figure 2 defines the waveform parameters. Figure 3 illustrates the standard test conditions under which these parameters are specified and
tested.
3.
Duty cycle is defined as (on time÷period), with VS = VDD/2, per figure 2. Duty cycle is measured with a 15pf load per figure 3.
4.
Other frequencies may be available, please contact factory.
Figure 2. Output Waveform
Figure 3. Output Test Conditions (25 ± 50C )
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied at
these or any other conditions in excess of conditions represented in the operational sections of this data sheet. Exposure to the
maximum ratings for the extended periods may adversely affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter
Power Supply
Storage Temperature
Symbol
V
DD
T
STR
Ratings
7
-55 to 125
Unit
V
0C
Page 2 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Reliability
The FX-500 is capable of meeting the following qualification tests
Table 3. Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Lead Solderability
Gross and Fine Leak
Conditions
MIL-STD-883, M2002/TEST A
MIL-STD-883, M2007/TESTA
MIL-STD-883, M2003
MIL-STD-883, M1014
Handling Precautions
Although ESD protection circuitrry has been designed into the the FX-424, proper precautions should be taken when handling
and mounting. VI employs a human body model and a charged-device model (CDM) for ESD susceptibility testing and design
protection evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry
wide standard has been adopted for the CDM, a standard HBM of resistance=1.5Kohms and capacitance = 100pF is widely used
and therefore can be used for comparison purposes
Table 4. Predicted ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
1000 V
1000 V
Conditions
MIL-STD 883, Method 3015
JEDEC, JESD22-C101
Solder Profile
Figure 4. Suggested IR Profile
Page 3 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Outline Drawing
Pad Configuration
Figure 6. Outline Drawing and Pad Layout
Table 6. Pin Functions
Pin #
1
2
3
4
5
6
Symbol
f
IN
Tri-State
!
GND
f
o
LD
2
V
DD
Function
Input Frequency
Logic Low = Output Disable
Logic High = Output Enabled
Case and Electrical Ground
Output Frequiency
Lock Detect
Power Supply Voltage
1. Tristate is driven to logic high or logic low; there is no internal pull up or pull down resistor.
2. LD is an open collector output requiring a 30k ohm pullup resistor to VDD. LD output is logic high under locked condition, logic low for no
input at fIN, and for “out-of-lock” condition LD transitions between logic low and logic high at the phase detector
3.
Tape and Reel
Table 5. Tape and Reel Information
Tape Dimensions (mm)
A
24
B
11.5
C
1.5
D
4
E
12
F
1.78
G
21
Reel Dimensions (mm)
H
13
I
100
J
5
K
25
L
330
#/Reel
200
Figure 5. Tape and Reel
Page 4 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Ordering Information
Table 7. Standard Frequencies
0.0010
0.0020
0.0032
0.0040
0.0080
0.0095
0.0100
0.0156
0.0157
0.0158
0.0160
0.0240
0.0250
0.0320
0.0400
0.0441
0.0480
0.0481
0.0500
0.0640
0.0800
0.1000
0.1280
0.2430
0.2560
0.3200
0.3840
0.4000
0.4800
0.5000
0.5120
0.6555
0.7720
0.9600
A1
AR
AG
A2
A3
AU
A6
AL
AD
AC
A4
BX
BR
BW
AP
AA
AB
AV
BT
A5
A9
AH
AX
A8
AM
AW
AY
AF
AK
BP
AJ
AE
AT
A7
1.0000
1.0240
1.2150
1.2288
1.2500
1.3333
1.5000
1.5360
1.5440
1.9200
2.0000
2.0480
2.3040
2.4576
2.5000
2.5575
3.0880
3.2400
3.2500
3.3750
3.8400
4.0000
4.0960
5.0000
5.1200
6.1440
6.2914
6.2915
6.3120
6.4800
6.7500
7.6800
7.7760
8.1920
BB
B2
BU
BK
BG
BF
BE
BV
B3
B1
B8
B4
BD
BJ
BM
B9
B6
BL
BC
BH
B7
BN
B5
C6
CD
CG
CC
CF
C7
C2
CB
C9
C5
C3
9.2160
9.7200
9.7500
9.8304
10.0000
10.2300
10.2400
10.4143
10.4582
10.4872
10.9490
10.9500
11.1840
12.2880
12.3077
12.3520
12.8000
13.0000
13.5000
14.8352
15.0000
15.0336
15.3600
16.0000
16.3840
17.1840
18.4320
18.5280
18.7500
19.2000
19.3927
19.4400
19.5313
19.6608
CH
C8
CE
C1
C4
DP
DM
DV
DU
DN
DG
DJ
DF
D8
DY
D1
D2
D3
DT
DL
D4
DR
DW
D9
D5
DE
D7
DC
EE
DD
DX
D6
DZ
DB
19.6990
19.7190
19.9219
20.0000
20.1416
20.4800
20.5444
20.7135
20.8286
20.8286
20.9165
21.0051
22.0000
22.1048
22.2171
22.5792
24.0000
24.5760
24.7040
25.0000
25.1658
25.6000
25.9200
26.0000
27.0000
27.6480
28.7040
29.4912
29.5000
30.0000
30.7200
30.8800
31.2500
32.0000
DK
DH
ED
E2
E3
E4
EF
E1
EB
EG
EH
EJ
E9
EK
E5
E8
EC
E6
E7
F7
F8
F6
F2
F3
F4
FB
F1
F5
F9
HE
H1
HF
H8
H2
32.7680
33.0000
33.3330
34.3680
34.5600
36.8640
37.0560
37.1250
37.5000
38.8800
39.0625
39.3216
39.8438
40.0000
40.2831
40.9600
41.0889
41.6571
41.8329
42.0000
42.0102
42.5000
42.6600
44.2095
44.4343
44.6218
44.7360
44.9280
45.1584
45.8240
46.0379
46.7200
46.8750
48.0000
H3
H7
HC
H6
HB
HG
H4
H9
HK
H5
HH
HD
HJ
JF
KK
J1
KM
KP
KT
JB
KV
JC
JZ
KX
LF
JW
J3
JE
JG
JM
LG
JK
JY
JV
49.1520
49.4080
50.0000
50.0480
51.2000
51.8400
52.0000
53.3300
54.7460
55.0000
60.0000
61.3800
61.4400
62.2080
62.5000
62.9145
63.3600
63.8976
64.0000
64.1520
65.5360
66.0000
70.0000
70.6560
71.6100
73.7280
74.1250
74.1758
74.2500
75.0000
76.8000
77.7600
J7
J2
JD
KD
LL
J4
JP
JU
JL
JX
JR
KY
J5
J8
J9
LE
JJ
JN
JT
JH
J6
JA
KB
KC
KF
K8
K1
KA
K7
KH
K4
K2
Note 1:
Other frequencies are available upon request, please contact VI for details
SS is code for non-standard frequencies, list the frequency after the part number.
Note 2:
Not all combinations are possible.
Note 3:
Output frequency must be equal to or greater than the input frequency. The ratio of
f
o
/f
IN
must be an integer. Also, the output frequency must be equal to greater than 100 kHz.
Page 5 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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