vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 1 of 7 rev: 28 november 2007 so-720 saw based clock oscillator features ? industry standard package, 5.0 x 7.5 x 2.0 mm ? asic technology for ultra low jitter 0.100 ps-rms typical across 12 khz to 20 mhz bw 0.120 ps-rms typical across 50 khz to 80 mhz bw ? output frequencies from 150 mhz to 1 ghz ? 3.3 v operation ? lv-pecl or lvds configuration with fast transition times ? complementary outputs ? output disable feature ? improved temperature stab ility over standard saw xo product is free of lead and compliant to ec rohs directive applications reference clock for wired and wireless products description standard ? 1-2-4 gigabit fibre channel incits 352-2002 ? 10 gigabit fibre channel incits 364-2003 ? 10gbe lan / wan ieee 802.3ae ? oc-192 itu-t g.709 ? sonet / sdh gr-253-core issue3 description the so-720 is a saw based clo ck oscillator that achieves low phase noise and very low jitter performance. the so-720 is housed in an i ndustry standard 6-pad leadless ceramic package that is hermetically sealed. packaging options include bulk or tape and reel.
so-720 saw clock oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 2 of 7 rev: 28 november 2007 electrical performance parameter symbol minimum typical maximum units notes frequency nominal frequency frequency stability (ordering option) aging f n f stab 150 50, 100 1000 10 mhz ppm ppm 1,2 1,2 6,8 supply voltage current (no load) v cc i cc 2.97 3.3 55 3.63 70 v ma 2,3 3 outputs mid level - lvpecl swing ? lvpecl mid level - lvds swing ? lvds current rise time fall time symmetry jitter (12 khz ? 20 mhz bw) 622.08 mhz jitter (50 khz ? 80 mhz bw) 622.08 mhz i out t r t f sym j j vcc-1.4 450 v cc -2.4 250 45 vcc-1.25 600 vcc-2.3 350 50 0.100 0.120 vcc-1.0 750 v cc -2.5 450 20 500 500 55 0.250 0.300 v mv-pp v mv-pp ma ps ps % ps-rms ps-rms 2,3 2,3 2,3 2,3 6 5,6 5,6 2,3 6,7 6,7 period jitter, rms (622.08 mhz) j 2.5 3.0 ps-rms 9 period jitter, peak - peak (622.08 mhz) j 16 24 ps pk-pk 9 operating temp. (ordering option) t op 0/70,-20/70 or -40/85 c 1 package size 5.0 x 7.5 x 2.0 mm 1. see standard frequencies and ordering information (pg 7). 2. parameters are tested with pr oduction test circuit below (fig 1). 3. parameters are tested at ambient temperature with test limits guard-banded for specified operat ing temperature. 4. measured as the maximum deviation from the best straight-li ne fit, per mil-0-55310. 5. measured from 20% to 80% of a full output swing (fig 2). 6. not tested in production, guaranteed by design, verified at qualification. 7. integrated across stated bandw idth per gr-253-core issue3. 8. aging rate for 10 years (aging is not part of overa ll frequency stability budget unless s pecified at time of order) 9. broadband period jitter measured using lecroy wavema ster 8600a 6 ghz oscilloscope, 250k samples taken. figure 1. test circuit figure 2. 10k lv-pecl waveform vcc - 1.6v vcc - 1.3v vcc - 1.0v 80% 20% t r t f t a t b sym = 100 x t a / t b 1 2 3 6 5 4 50 ? 50 ? test circuit notes: 1) to permit 50 ? measurement of outputs, all dc inputs are biased down 1.3v. 2) all voltage sources contain bypass capacitors to minimize supply noise. 3) 50 ? terminations are within test equipment. (-1.3v, +2.0v) no connect (-1.3v) (+2.0v) coutput output enable, disable
so-720 saw clock oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 3 of 7 rev: 28 november 2007 outline diagram suggested pad layout pin out pin symbol function 1 nc or oe 1 nc or enable = lv-cmos logic 0 or ground disabled = lv-cmos logic 1 2 oe 1 or nc nc or enable = lv-cmos logic 0 or ground disabled = lv-cmos logic 1 3 gnd case and electrical ground 4 output output 5 coutput comple mentary output 6 v cc power supply voltage (+3.3v 10%) note 1: for proper operation, chosen di sable pin can not be left floating and a pi n 1 or pin 2 enable option must be ordered see page 7 for alternative input logic option tape and reel (eia-481-2-a) tape dimensions (mm) reel dimensions (mm) dimension w f do po p1 a b c d n w1 w2 # per tolerance typ typ typ typ typ typ min typ min min typ max reel so-720 16 7.5 1.5 4 8 178 1.5 13 20.2 50 16.4 22.4 200 po w a n f p1 w1 w2 c b d ?do mm [inch] 5.08 [0.200] 2.54 [0.100] 1.78 [0.070] 3.66 [0.144] 1.96 [0.077]
so-720 saw clock oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 4 of 7 rev: 28 november 2007 absolute maximum ratings parameter symbol ratings unit power supply v cc 0 to 4 v output current iout 25 ma storage temperature ts -55 to 125 c soldering temp/time t ls 260 / 40 c/sec stresses in excess of the absolute maximum ratings can permanently damage the devic e. functional operation is not implied at these or any other conditions in exce ss of conditions represented in the operational sections of this datasheet. exposure to absolute maximum ratings for extended periods may adversely affect device reliability. permanent damage is also po ssible if od is applied before vcc. suggested output load configurations 4 3 240 ? 0.01 f 16 2 gnd n/c 5 od 0.10 f +3.3v 240 ? 100 ? z = 50 ? z = 50 ? coutput vcc output gnd od n/c output 240 ? 34 240 ? coutput 2 1 5 6 vcc 0.01 f 0.10 f +3.3v n/c -1.3v coutput output 4 3 25 od 0.01 f 16 vcc 0.10 f +2.0v lv-pecl to lv-pecl: for short transmission lengths, the power consumption could be reduced by removing the 100 ? resistor and doubling the value of the pull down resistors. functional test: allows standard power supply configuration. since ac coupled, the lv-pecl levels cannot be measured. lv-pecl to lvds: restricted for short transmission lengths. configuration may require modification depending on lvds receiver. gnd 3 output 4 z = 50 ? +3.3v coutput n/c od 2 1 5 vcc 6 0.01 f 0.10 f z = 50 ? 40 ? 40 ? 150 ? 150 ? 49 ? 49 ? +3.3v production test: allows direct dc coupling into 50 ? measurement equipment. must bias the power supplys as shown. similar to figure 1. 0.01 f 0.01 f
so-720 saw clock oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 5 of 7 rev: 28 november 2007 typical phase noise so-720-lff-gaa- 622.0800 mhz -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 10000000 100000000 frequency offset (hz) phase noise level (dbc/hz) phase noise at specific frequency offsets 10hz -46 dbc/hz 100hz -80 dbc/hz 1000hz -110 dbc/hz 10khz -130 dbc/hz 100khz -134 dbc/hz 1mhz -138 dbc/hz 10mhz -147 dbc/hz 20mhz -147 dbc/hz 40mhz -148 dbc/hz jitter oc48 (12khz to 20mhz) 0.08 ps-rms or 0.56 ps-pp jitter oc192 (50khz to 80mhz) 0.11 ps-rms or 0.80 pp-rms
so-720 saw clock oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 6 of 7 rev: 28 november 2007 the device is designed 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 so-720 device is hermetically sealed so an aqueous wash is not an issue. termination plating: electroless gold plate over nickel plate 25 217 200 150 260 temperature (degc) time (sec) t s t amb-p t l t p r up r dn reliability vi qualification includes aging at various extreme temper atures, shock and vibration, temperature cycling, and ir reflow simulation. the so-720 family is c apable of meeting the following qualification tests: 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 so-720 proper precautions should be taken when handling and mounting. vi employs a human body model (hbm) and a man-man model (mm) for esd susceptibility testing and desi gn protection evaluation. esd ratings model minimum conditions human body model 1500 v mil-std 883, method 3015 man man model 200 v v/jesd22-a115-a, reflow profile (ipc/jedec j-std-020) parameter symbol value preheat time t s 60 sec min, 180 sec max ramp up r up 3 o c/sec max time above 217 o c t l 60 sec min, 150 sec max time to peak temperature t amb-p 480 sec max time at 260 o c t p 20 sec min, 40 sec max ramp down r dn 6 o c/sec max
so-720 saw clock oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88- vectron-1 websit e: www.ve ctron.com page 7 of 7 rev: 28 november 2007 standard output frequencies (mhz) *155.5200 *156.2500 *160.0000 *175.0000 *187.5000 *194.8000 *200.0000 *240.0000 *250.0000 *268.8000 300.0000 311. 0400 312.5000 320.0000 350.0000 375.0000 389.6000 400.0000 480.0000 500.0000 531.2500 532.0000 533.0000 537.6000 600.0000 622.0800 625.0000 640.0000 644.5313 657.4219 666.5143 669.3266 672.1627 690.5692 693.4830 704.3806 707.3527 720.0000 768.0000 796.8750 901.1200 1000.000 frequencies not shown are available upon request. *v cc6 is preferred xo for frequencies < 300 mhz revision control a 6/21/06 vectron prod. mgt. release of so-720 datasheet b 11/28/07 tim glass increased frequency range to 1 ghz ordering information so - 720 - l f f - g a a - xxx.xxx not all combinations possible for additional information, please contact: vectron international reserves the right to make changes to t he product(s) and or information contained herein without notice. no liability is assumed as a result of thei r use or application. no rights under any patent accompany the sale of any such pro duct(s) or information. usa: vectron international, 267 lowell rd, hudson, nh 03051 . . . . tel: 1-88-vectron-1 fax: 1-888-fax-vectron europe: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . tel: +49 (0) 3328-4784-17 fax: +49 (0) 3328-4784-30 asia: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . tel: +86-21-28909740 fax: +86-21-28909240 product family so = so based xo package 720 = 5.0 x 7.5 x 2.0 mm 6 pad ceramic smd input l = 3.3 vdc 10% output f = lvpecl (45/55% symmetry) p = lvds (45/55% symmetry) operating temperature c = 0c to 70 c d = -20oc to 70oc f = -40c to 85 c frequency 150 - 1000 mhz enable/disable pin & input logic a = pin 2: enable low (or gnd) / disable high b = pin 2: enable high (or vcc) / disable low c = pin 1: enable low (or gnd) / disable high d = pin 1: enable high (or vcc) / disable low overall stability condition a = includes 10 years of aging at 40oc n = excludes aging stability g = 50 ppm maximum h = 100 ppm maximum
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