Vectron FX-700 Low jitter frequency translator Datasheet

FX-700
Low Jitter Frequency Translator
FX-700
Description
The FX-700 is a 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 16 pad ceramic package
with a hermetic seam welded lid.
Features
•
•
•
•
•
•
•
•
•
•
Applications
5.0 x 7.5 mm, Hermetically sealed SMD package
Frequency Translation to 77.760 MHz
3.3 Volt or 5.0 Volt Supply
Tri-State Output allows board test
Lock Detect
Commercial or Industrial Temp. Range
CMOS Output
Absolute Pull Range Performance to +/-100 ppm
Capable of locking to an 8 kHz pulse/BITS clock
Product is free of lead and compliant to EC RoHS Directive
•
•
•
•
•
Frequency Translation, Clock Smoothing
Telecom - SONET/SDH/ATM
Datacom – DSLAM, DSLAR, Access Nodes
Base Station – GSM, CDMA
Cable Modem Head End
Block Diagram
C1 Charge
Pump Out
(5)
LD
(8)
Phase
Detector
& LD
÷
FIN
(6)
(1-64)
VCOUT
(3)
Charge
Pump
VCIN
(16)
VCXO
VCXOOUT
(13)
÷
FOUT
(10)
(1-16384)
VDD
(1)
VDB
(11)
VDA
(2)
VDO
(14)
VCXOIN
(12)
TRI-STATE
(4)
GND
(7, 9)
Figure 1. Functional block diagram
Page 1 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Rev: 31Mar2009
Performance Specifications
Table 1. Electrical Performance
Parameter
Symbol
Min
Typical
Frequency
Input Frequency
Output Frequency
FIN
FOUT
0.001
0.1
Capture Range (ordering option)
APR
Maximum
Units
77.76
80.0
MHz
MHz
4
Supply
Voltage 1 (VDD, VDB, VDA, VDO)
±50, ±80, or ±100
VDD
VDD
IDD
4.5
2.97
Input
Input High Voltage
Input Low Voltage
VIH
VIL
0.7*VDD
Output
Output High Voltage
Outpuit Low Voltage
VOH
VOL
0.9*VDD
Output
Rise Time 2
Fall Time 2
Duty Cycle 3
Jitter Generation - 80.0MHz output
tR
tF
SYM
ΦJ
Current 5
Operating Temp (ordering option)
TOP
5.0
3.3
40
50
4.7
ppm
5.5
3.63
40
V
V
mA
0.3*VDD
V
V
0.1*VDD
V
V
3.0
3.0
60
ns
ns
%
ps-rms
0/70, -40/85
0C
1. A 0.01uF high frequency ceramic capacitor in parallel with a 0.1uF low frequency tantalum bypass capacitor is recommended
2. Figure 2 defines the waveform parameters. Figure 3 illustrates the standard test conditions under which these parameters are
tested and specified.
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.
5. Combined Current From VDD, VDO, VDA, and VDB
Figure 2. Output Waveform
Figure 3. Output Test Conditions (25°C ±5°C)
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
absolute maximum ratings for extended periods may adversely affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter
Symbol
Ratings
Unit
Power Supply
VDD
7
V
Storage Temperature
TSTR
-55 to 125
0C
Page 2 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Rev: 31Mar2009
Reliability
The FX-700 is capable of meeting the following qualification tests
Table 3. Environmental Compliance
Parameter
Conditions
Mechanical Shock
MIL-STD-883, Method 2002
Mechanical Vibration
MIL-STD-883, Method 2007
Solderability
MIL-STD-883, Method 2003
Gross and Fine Leak
MIL-STD-883, Method 1014
Resistance to Solvents
MIL-STD-883, Method 2016
Handling Precautions
Although ESD protection circuitry has been designed into the the FX-700, 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
Minimum
Conditions
Human Body Model
1500 V
MIL-STD 883, Method 3015
Charged Device Model
1000 V
JEDEC, JESD22-C101
Solder Reflow Profile
Table 5. Reflow Profile (IPC/JEDEC J-STD-020C)
Parameter
PreHeat Time
Ramp Up
Time Above 217 0C
Time To Peak Temperature
Time At 260 0C
Ramp Down
Symbol
Value
tS
60 sec Min, 180 sec Max
RUP
3 0C/sec Max
tL
60 sec Min, 150 sec Max
tAMB-P
480 sec Max
tP
20 sec Min, 40 sec Max
RDN
6 0C/sec Max
The device has been qualified to meet the JEDEC
standard for Pb-Free assembly. The temperatures
and time intervals listed are based on the PbFree small body requirements. The temperatures
refer to the topside of the package, measured on
the package body surface. The FX-700 device is
hermetically sealed so an aqueous wash is not an
issue.
Figure 3. Suggested IR Profile
Page 3 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Rev: 31Mar2009
Outline Drawing
Suggested Pad Layout
Dimensions in mm.
Figure 5. Outline Diagram
Table 7. Pin Functions
Pad #
Symbol
Function
1
VDD
Digital PLL Supply (3.3 V +/- 10% or 5.0 V +/- 10%)
2
VDA
Analog PLL Supply (3.3 V +/- 10% or 5.0 V +/- 10%)
3
VCOUT
Control Voltage
1
Logic Low = Output Disable / Logic High = Output Enabled
4
Tri-state
5
C1
Passive Loop Filter Node
6
FIN
Input Frequency
7
GND
Cover and Electrical Ground
2
Lock Detect
8
LD
9
GNDB
Output Buffer Ground
10
FOUT
Output Frequency
11
VDB
Output Buffer Supply (3.3 V +/- 10% or 5.0 V +/- 10%)
12
VCXOIN
VCXO Input
13
VCXOOUT
VCXO Output
14
VDO
VCXO Supply (3.3 V +/- 10% or 5.0 V +/- 10%)
15
N.C.
No Internal Connection Made
16
VCIN
VCXO Control Voltage Input
1 Tri-state must be driven to a logic high or a logic low, there is no internal pull up or pull down resistor (tie pin to VDD for PLL operation).
2 LD is an open collector output requiring a 30k ohm minimum pull-up 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
high at the phase detector frequency.
Page 4 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Rev: 31Mar2009
Tape and Reel
Table 6. Tape and Reel Information
Tape Dimensions (mm)
Reel Dimensions (mm)
A
B
C
D
E
F
G
H
I
J
K
L
#/Reel
16
7.5
1.5
4
8
1.5
20.2
13
50
6
16.4
178
500
Figure 4. Tape and Reel
FX-700 Theory of Operation
The FX-700 includes an integrated phase detector, current mode charge pump, programmable frequency dividers and VCXO. The
FX-700 will translate an input frequency such as 8 kHz, 1.544 MHz or 19.440 MHz to a specific output frequency which is an integer
multiple (1-16384) of the input frequency and less than or equal to 77.760 MHz. For clock smoothing applications, the input
frequency is typically internally divided down by a factor of 64 (2N where N = 6) by the input frequency divider and this frequency
becomes an input to the phase detector. The integrated frequency dividers (factory programmed) and crystal based VCXO allows
for a large range of possible frequency translations and clock smoothing applications.
The FX-700’s PLL is a feedback system which forces the output frequency to lock in both phase and frequency to the input
frequency. While there will be some phase error, theory states there is no frequency error. The loop filter design will dictate many
key parameters such as jitter reduction, stability, lock range and acquisition time. The external second order passive loop filter is
a complex impedance in parallel with the input capacitance of the VCXO. The loop filter converts the charge pump output into
the VCXO’s control voltage. VI’s loop filter design methodology involves the calculation of the open loop gain bandwidth and
corresponding phase margin to determine the optimal component values that ensure high loop stability and acceptable lock in
time. As a rule of thumb, the VCXO gain is typically 100 ppm/volt and the charge pump current is typically 32 uA.
VI’s Applications Engineering staff can provide the external loop filter component values required to meet specific system
requirements and application.
Suggested FX-700 Circuit Configuration Drawing
Page 5 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Rev: 31Mar2009
Table 7. Standard Frequencies
0.01000000
A1
0.25600000
AM
2.55750000
B9
10.2300000
DP
19.3926580
DX
25.6000000
F6
39.8437500
HJ
50.0000000
JD
74.1758000
0.00200000
AR
0.32000000
AW
3.08800000
B6
10.2400000
DM
19.4400000
D6
25.9200000
F2
40.0000000
JF
50.0480000
KD
74.2500000
K7
0.00320000
AG
0.38400000
AY
3.24000000
BL
10.4142850
DV
19.5312500
DZ
26.0000000
F3
40.2830630
KK
51.2000000
LL
75.0000000
KH
0.00400000
A2
0.40000000
AF
3.25000000
BC
10.4582260
DU
19.6608000
DB
27.0000000
F4
40.9600000
J1
51.8400000
J4
76.8000000
K4
0.00800000
A3
0.48000000
AK
3.37500000
BH
10.4872000
DN
19.6989680
DK
27.6480000
FB
41.0888870
KM
52.0000000
JP
77.7600000
K2
0.00819200
BY
0.50000000
BP
3.84000000
B7
10.9490000
DG
19.7190000
DH
28.7040000
F1
41.6571440
KP
53.3300000
JU
0.00946900
AU
0.51200000
AJ
4.00000000
BN
10.9500000
DJ
19.9218750
ED
29.4912000
F5
41.6600000
LM
54.7460000
JL
0.01000000
A6
0.65545000
AE
4.09600000
B5
11.1840000
DF
20.0000000
E2
29.5000000
F9
41.8329130
KT
55.0000000
JX
0.01562500
AL
0.77200000
AT
4.19430400
CJ
12.2880000
D8
20.1416000
E3
30.0000000
HE
42.0000000
JB
60.0000000
JR
0.01573400
AD
0.96000000
A7
5.00000000
C6
12.3076860
DY
20.4800000
E4
30.7200000
H1
42.0101690
KV
61.3800000
KY
0.01575000
AC
1.00000000
BB
5.12000000
CD
12.3520000
D1
20.5444340
EF
30.8800000
HF
42.5000000
JC
61.4400000
J5
0.01600000
A4
1.02400000
B2
6.14400000
CG
12.8000000
D2
20.7135000
E1
31.2500000
H8
42.6600000
JZ
62.2080000
J8
0.02400000
BX
1.21500000
BU
6.29140000
CC
13.0000000
D3
20.8285720
EG
32.0000000
H2
44.2095440
KX
62.5000000
J9
LE
0.02500000
BR
1.22880000
BK
6.29145600
CF
13.5000000
DT
20.8286000
EB
32.7680000
H3
44.4343000
LF
62.9145000
0.03200000
BW
1.25000000
BG
6.31200000
C7
14.8351600
DL
20.9165460
EH
33.0000000
H7
44.6218000
JW
63.3600000
JJ
0.04000000
AP
1.33330000
BF
6.48000000
C2
15.0000000
D4
21.0050840
EJ
33.3330000
HC
44.7360000
J3
63.8976000
JN
0.04410000
AA
1.50000000
BE
6.75000000
CB
15.0336000
DR
22.0000000
E9
34.3680000
H6
44.9280000
JE
64.0000000
JT
0.04800000
AB
1.53600000
BV
7.68000000
C9
15.3600000
DW
22.1047720
EK
34.5600000
HB
45.1584000
JG
64.1520000
JH
0.04807700
AV
1.54400000
B3
7.77600000
C5
16.0000000
D9
22.2171000
E5
36.8640000
HG
45.8240000
JM
65.5360000
J6
0.05000000
BT
1.92000000
B1
8.19200000
C3
16.3840000
D5
22.5792000
E8
37.0560000
H4
46.0379460
LG
66.0000000
JA
0.06400000
A5
2.00000000
B8
9.21600000
CH
17.1840000
DE
24.0000000
EC
37.1250000
H9
46.7200000
JK
70.0000000
KB
0.08000000
A9
2.04800000
B4
9.72000000
C8
18.4320000
D7
24.5760000
E6
37.5000000
HK
46.8750000
JY
70.6560000
KC
0.10000000
AH
2.30400000
BD
9.75000000
CE
18.5280000
DC
24.7040000
E7
38.8800000
H5
48.0000000
JV
71.6100000
KF
0.12800000
AX
2.45760000
BJ
9.83040000
C1
18.7500000
EE
25.0000000
F7
39.0625000
HH
49.1520000
J7
73.7280000
K8
0.24300000
A8
2.50000000
BM
10.0000000
C4
19.2000000
DD
25.1658000
F8
39.3216000
HD
49.4080000
J2
74.1250000
K1
Page 6 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
KA
Rev: 31Mar2009
Ordering Information
F X - 7 0 0 - E A E - K N K N - XX - XX
Output Frequency
(See Above)
Product Family
FX: Frequency Translator
Input Frequency
(See Above)
Package
700: 5.0 x 7.5 x2.0mm
Input
D: 5.0 Vdc ±10%
E: 3.3 Vdc ±10%
Performance Options
N: Standard
A: Improved Phase Noise
Output
A: CMOS
Loop Filter BW
K: External Loop Filter
Operating Temperature
E: -40 to 85 °C
T: 0 to 70 °C
Absolute Pull Range
K: ± 50 ppm
P: ± 80 ppm
S: ± 100 ppm
Factory Use
Note: Not all combinations will be availabe - check with the factory to determine the optimum configuration for your application
For Additional Information, Please Contact
USA:
Europe:
Asia:
Vectron International
267 Lowell Road
Hudson, NH 03051
Tel: 1.888.328.7661
Fax: 1.888.329.8328
Vectron International
Landstrasse, D-74924
Neckarbischofsheim, Germany
Tel: +49 (0) 3328.4784.17
Fax: +49 (0) 3328.4784.30
Vectron International
1F-2F, No 8 Workshop, No 308 Fenju Road
WaiGaoQiao Free Trade Zone
Pudong, Shanghai, China 200131
Tel: 86.21.5048.0777
Fax: 86.21.5048.1881
Disclaimer
Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
Page 7 of 7
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Rev: 31Mar2009
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