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FX-424
Low Jitter Frequency Translator
FX-424
Description
The FX-424 is a precision quartz-based frequency translator used to translate an input frequency such as 8 kHz, 1.544 MHz, 2.048 MHz, 19.44 MHz etc. to any specific frequency from 1.544 MHz to 1.0 GHz. The FX-424 can perform either up or down frequency conversion. The FX-424's superior jitter performance is achieved through the use of a precision VCXO or VCSO. With the use of an external multiplexer, up to 4 different input clocks can be translated to a common output frequency.
Features
* * * * * * * * * Quartz-based PLL for Ultra-Low Jitter Frequency Translation up to 850 MHz Accepts up to 4 ext.-muxed clock inputs CMOS / LVDS / LVPECL Inputs compatible Differential LVPECL or LVCMOS Output Lock Detect / Loss of Signal Alarms Output Disable 20.3 x 13.7 x 5.1 mm SMT package RoHS/Lead Free Compliant * * * * * *
Applications
Wireless Infrastructure 10 Gigabit FC 10GbE LAN / WAN OADM and IP Routers Test Equipment Military Communications
Block Diagram
VCC (14) FIN1 FIN2 FIN3 FIN4 F FIN ( (13) LD (10) Phase Detector & LD VMON (5) Loop Filter VCSO (8) FOUT1 (9) CFOUT1
/
Controller
SEL0 (1) SEL1 (2)
/
GND (3, 7, 11, 12)
OD (6)
Figure 1. Functional block diagram
Page 1 of 8 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 Output Frequency Supply Voltage 2, 3 Current (No Load)3 Input Signal 2, 3 CMOS LVPECL LVCMOS Output (Option A) 2, 3 Differential Output (Options F and P) Mid Level - LVPECL Swing - LVPECL Mid Level - LVDS Swing - LVDS Rise Time Fall Time Symmetry
2, 3, 4, 5 1, 2, 3
Symbol
FIN APR FOUT VCC ICC FIN FIN
Min
0.008 40 1.544 3.13
Typical
Maximum
170 1.0
Units
MHz ppm GHz V mA
3.3 45 CMOS LVPECL LVCMOS
3.46 60
VCC-1.4 450 VCC-2.4 250 tR tF SYM n n n n n n n J J TOP
45
VCC-1.25 600 VCC-2.3 410 0.5 0.5 50 -64/-27 -95/-55 -123/-123 -143/-110 -146/-130 -146/-146 -146/-146 0.30 0.12 0 to 70 or -40 to 85
VCC-1.0 950 VCC-2.5 450
55
V mV p-p V mV p-p ns ns % dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz ps RMS ps RMS 0C
SSB Phase Noise, Fout = 155.52/622.08 5, 6 10Hz Offset 100Hz Offset 1kHz Offset 10kHz Offset 100kHz Offfset 1 MHz Offset 10 MHz Offset Jitter Generation 5, 6 155.52 MHz (12kHz - 20MHz BW) 622.08 MHz (12kHz - 20 MHz BW) Operating Temperature (Options C of F) 1 ,3
1. 2. 3. 4. 5. 6.
See Standard Frequencies and Ordering Information. Parameters are tested with production test circuit below (Fig 2). Parameters are tested at ambient temperature with test limits guard-banded for specified operating temperature. Measured from 20% to 80% of a full output swing (Fig 3). Not tested in production, guaranteed by design, verified at qualification. The FX-424 phase noise and jitter performance can be optimized for specific applications. Please consult with Vectron's Application Engineers for more information.
Page 2 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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
Power Supply Storage Temperature Soldering Temp/TIme
Symbol
VDD TSTR TLS
Ratings
6 -55 to 125 260/40
Unit
V 0C 0C/sec
Reliability
The FX-424 is capable of meeting the following qualification tests Table 3. Environmental Compliance Parameter
Mechanical Shock Mechanical Vibration Solderability Gross and Fine Leak Resistance to Solvents
Conditions
MIL-STD-883, Method 2002 MIL-STD-883, Method 2007 MIL-STD-883, Method 2003 MIL-STD-883, Method 1014 MIL-STD-883, Method 2016
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 R$atings Model
Human Body Model Charged Device Model
Minimum
500 V 500 V
Conditions
MIL-STD 883, Method 3015 JEDEC, JESD22-C101
Page 3 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
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
tS RUP tL tAMB-P tP RDN
Value
60 sec Min, 180 sec Max 3 0C/sec Max 60 sec Min, 150 sec Max 480 sec Max 20 sec Min, 40 sec Max 6 0C/sec Max
The FX-424 is qualified to meet the JEDEC standard for Pb-Free assembly. The temperatures and time intervals listed are based on the Pb-Free small body requirements. The temperatures refer to the topside of the package, measured on the package body surface. The FX-427 should not be subjected to a wash process that will immerse it in solvents. NO CLEAN is the recommended procedure. The FX-427 has been designed for pick and place reflow soldering. The FX-427 may be reflowed once and should not be reflowed in the inverted position.
Figure 4. Suggested IR Profile
Tape and Reel
Table 6. Tape and Reel Information Tape Dimensions (mm)
W 44 F 20.2 Do 1.5 Po 4 P1 20 A 330 B 1.5
Reel Dimensions (mm)
C 13 D 20.2 N 100 W1 44.4 W2 50.4 #/Reel 200
Figure 5. Tape and Reel
Page 4 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Pin Configuration
Figure 6. Pin Configuration
Table 7. Pin Functions Pin #
1 2 3 4 5 VMON O
Symbol
SEL0 SEL1 GND
I/O
I I GND LVTTL LVTTL Supply
Level
Frequency Select * Frequency Select * Case and Electrical Ground Not present
Function
VCXO Control Voltage Monitor Under locked conditions VMON should be > 0.3V and <3.0V. The input frequency may be out of range if the voltage exceeds these levels LVCMOS Output Disable Disabled = Logic "1" Enabled = Logic "0" or no connect Case and Electrical Ground Frequency Output Complementary Frequency Output - Note for LVCMOS option this pad will be tied to GND. Lock Detect Locked = Logic "1" Loss of Signal = Logic "0" Complimentary Divided-Down VCSO/VCXO Output, or Disabled Case and Electrical Ground
6
OD
I
7 8 9 10
GND FOUT CFOUT LD
GND O O O
Supply LCPECL. LVDS or LVCMOS LVPECL, LVDS or LVCMOS LVCMOS
11 12
GND GND
GND GND
Supply Supply
13 14
FIN VCC
I VCC
LVCMOS or LVPECL Supply
Input Frequency - AC Coupled Power Supply Voltage (3.3 V 5%)
* For applications requiring two to four input frequencies, Vectron will assign a unique part number and the Input Frequency versus SEL[1:0] settings will be provided in a Specification Control Drawing. For single input configurations it is recommended that SEL0 and SEL1 are tied to ground.
Page 5 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
FX-424 Outline Diagram and Pad Layout
Figure 7. Outline and Pad Layout
Page 6 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Suggested Output Load Configurations
Figure 8. Single Input Frequency Translation - LVPECL Termination
Figure 8. Four Input Frequencies Translated to Common Output Frequency - LVPECL Termination
Page 7 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Ordering Information
Table 8. Standard Frequencies
8.00 kHz 16.00 kHz 64.00 kHz 1.024 MHz 1.544 MHz 2.048 MHz 4.096 MHz 8.192 MHz 13.000 MHz 16.384 MHz 19.440 MHz 20.480 MHz C D E F H J K L M N P R 26.00 MHz 27.00 MHz 38.88 MHz 44.736 MHz 51.84 MHz 614.44 MHz 77.76 MHz 82.944 MHz 112.00 MHz 139.264 MHz 155.520 MHz 166.6286 MHz T W X Y 0 1 2 3 4 5 6 7 Special SCD S 622.08 MHz 666.5143 MHz 8 9
FX-424-XXX-XXXXX
Power Supply D: 3.3 Vdc Output A: LVCMOS F: LVPECL P: LVDS RoHs Compliant G: Yes Blank: Mat contain Pb Ouptut Frequency 1 (See Table) Temperature Range C: 0 to 700C F: -40 to 850C Input Frequency 1, 2 (See Table) Number of Input Frequencies 2 1: 1 input frequency 2: 2 input frequencies 3: 3 input frequencies 4: 4 input frequencies
Input Logic A: LVCMOS D: LVPECL
1. For non-listed frequencies and/or multiple input frequencies a unique part number will be assigned with the following format FX-424-XXX-SNNNN. "SNNNN" is the SCD number. 2. To request initial samplesfor an FX-424 with more than one input frequency, please use the following format FX-424-XXX-XNSX followed by the input frequencies. For example, to request samples for a translator with and operating temperature of -40 to +85C, input frequencies of 8 kHz, 1.544 MHz, 19.44 MHz, 77.76 MHz and an output frequency of 622.08 MHz, the part number would be FX-424-DFF-A4S8, S = 8 kHz, 1.544 MHz, 19.44 MHz, 77.76 MHz.
For Additional Information, Please Contact
USA:
Vectron International 267 Lowell Road Hudson, NH 03051 Tel: 1.888.328.7661 Fax: 1.888.329.8328
Europe:
Vectron International Landstrasse, D-74924 Neckarbischofsheim, Germany Tel: +49 (0) 3328.4784.17 Fax: +49 (0) 3328.4784.30
Asia:
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.
Rev: 8/2008
Page 8 of 8 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com

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