1 1 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com FX-702-SYNCE-156M250000 complete vcso based phase lock loop for synchronous ethernet jitter attenuation the fx-702 is a low jitter precision frequency translator that provides clock smoothing/jitter attenuation of a 156.25 mhz input clock. the fx-702s superior jitter performance is achieved through the plls integrated vcso. the fx-702 is housed in a hermetically sealed leadless surface mount package o ered on tape and reel. 5 x 7.5 x 2.5 mm package ? jitter attenuation at 156.25 mhz ? integrated phase jitter < 200 fsec ? vcso based pll for ultra-low jitter ? cmos / lvds / lvpecl inputs compatible ? di erential lvpecl output ? cmos lock detect ? -40/+85c temperature range ? fully compatible for lead free assembly ? jitter attenuation ? clock smoothing ? synchronous ethernet, g.8262 ? features applications block diagram description fx-702 phase detector & ld vcc (10) charge pump vcso switch external divider 1, 4, 8, 16, 32 1, 2, 4 1, 4 ld (2) lfn (6) cfln (7) mode (4) brclk (1) gnd (3, 5, 13) fout (8) cfout (9) figure 1. functional block diagram fin (12) cfin (11) cbrclk (4) rev: 22sep2009
2 2 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com 1. see standard frequencies and ordering information. 2. parameters are tested with production test circuit below (fig 1). 3. parameters are tested at ambient temperature with test limits guard banded for speci ed operating temperature. 4. measured from 20% to 80% of a full output swing (fig 2). 5. not tested in production, guaranteed by design, veri ed at quali cation. 6. minimum input low voltage not to exceed 2.125 v. minimum input high voltage not to go below 1.49 v. 7. ac coupling is recommended. there is an internal pull-up and pull-down resistor on all clock inputs (fin, brclk). figure 1. lvpecl test circuit figure 2. 10k lvpecl waveform rev: 22sep2009 performance speci cations table 1. electrical performance parameter symbol min typical maximum units frequency 1, 2, 3 input frequency output frequency f in f out 156.25 156.25 mhz mhz capture range 1, 2, 3 apr 100 supply voltage 2, 3 current (no load) 3 v cc i cc 2.97 3.3 3.63 100 v ma lvcmos input 2, 3 input high voltage input low voltage v ih v il 2.0 0 v cc 0.8 v v lvpecl input peal-peak amplitude swing 6, 7 0.20 3.00 v lock detect output output high voltage logic low voltage v oh v ol 0.9*v cc 0.1*v cc v v outputs mid level - lvpecl 2, 3 swing - lvpecl 2, 3 current 5 rise time 4, 5 fall time 4, 5 symmetry 2, 3 jitter generation - 156.25 mhz output (12khz-20mhz bw) 5 i out t r t f sym j v cc -1.4 450 45 v cc -1.25 600 50 150 v cc -1.0 950 20 400 400 55 200 v mv-pp ma ps ps % fs-rms operating temp t op -40/85 0c
3 3 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com 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 t o absolute maximum ratings for extended periods may adversely a ect device reliability. the fx-702 is capable of meeting the following quali cation tests: although esd protection circuitry has been designed into the the fx-702, proper precautions should be taken when handling and mounting. vi employs a human body model (hbm) and a charged device model (cdm) for esd susceptibility testing and design protection evaluation. esd thresholds are dependent on the circuit parameters used to de ne the model. rev: 22sep2009 reliability absolute maximum ratings table 2. absolute maximum ratings parameter symbol ratings unit power supply v cc 0 to 6 v input current i in 100 ma output current i out 25 ma storage temperature t str -55 to 125 0c soldering temperature/duration t peak /t p 260 / 40 0c/sec 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 moisture sensitivity level rating msl 1 handling precautions table 4. predicted esd r$atings model class minimum conditions human body model 2 2000 v mil-std 883, method 3015 charged device model c5 1000 v jedec, jesd22-c101 machine model m3 200 v esd stm5.2-1999
4 4 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com rev: 22sep2009 table 5. re ow pro le (ipc/jedec j-std-020c) parameter symbol value preheat time t s 60 sec min, 180 sec max ramp up r up 3 0c/sec max time above 217 0c t l 60 sec min, 150 sec max time to peak temperature t amb-p 480 sec max time at 260 0c t p 20 sec min, 40 sec max ramp down r dn 6 0c/sec max table 6. tape and reel information tape dimensions (mm) reel dimensions (mm) w f do po p1 a b c d n w1 w2 #/reel 16 7.5 1.5 4 8 178 1.5 13 20.2 50 16.4 22.4 200 figure 3. suggested ir pro le the device has been quali ed 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-702 device is hermetically sealed so an aqueous wash is not an issue. figure 4. tape and reel
5 5 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com rev: 22sep2009 table 7. pin functions pad # symbol i/o level function 1 brclk i nc or lvpe- cl, lvds nc or for external divider application = pd feedback frequency 2ld 1 o cmos lock detect logic 0 = fx locked logic 1 - no input output transitioning = out of lock 3 gnd gnd supply case and electrical ground 4 mode 2 i cmos fx operating mode logic 0 = standard pll (normal setting) logic 1 = fin coupled to fout 5 gnd gnd supply case and electrical ground 6 lfn analog loop filter node 7 clfn analog complementary loop filter node 8 fout o lvpecl or lvds frequency output 9 cfout o lvpecl or lvds complementary frequency output 10 vcc i supply power supply voltage (+3.3v 5%) 11 cfin i lvpecl complemetary input frequency for cmos inouts, ac-couple unused inputto ground or negative supply 12 fin i cmos or lvpecl input frequency 13 gnd gnd supply case and electrical ground 14 cbrclk i nc or lvpe- cl, lvds nc or for external divider applications = comp. pd feedback frequency 1. it is recommended that a bu er driver is used for best noise isolation. 2. do not leave the mode pin oating, it should be set to logic 0 or ground for normal operation. 3. brclk and cbrclk should be left oating if not used. 4. fin, cfin, brclk, and cbrclk have internal pull-up/pull-down resistors and it is recommended to ac couple these inputs. figure 5. outline diagram fx702 yww synce 156m25
6 6 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com application circuits figure 6. 156.25 mhz to 156.25 mhz jitter attenuation/clock smoothing the fx-702 includes a phase detector, charge pump, frequency dividers and a vcso with its own an associated divide-by function. the addition of the simple external loop lter shown below completes the design of this low jitter vcxo based pll. the above circuit has a 300 hz loop bandwidth. figure 7. typical phase noise performance for FX-702-SYNCE-156M250000 rev: 22sep2009
7 7 of 7 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com rev: 22sep2009 ordering information 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. 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 fx- 702 - s y n c e - 156m250000 product family fx: frequency translator package 702: 5.0 x 7.5 x 2.0mm input e: 3.3 vdc 10% output lvpecl operating temperature -40 to 85 c absolute pull range 100 ppm input frequency output frequency
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