vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectron-1 website: www.vect ron.com page 1 of 7 rev: 07dec06 vs-751 dual frequency vcso features ? 5 x 7.5 x 2.5 mm package ? output frequencies from 500 mhz to 850 mhz ? 3.3 v operation ? low jitter < 0.25 ps-rms across 50 khz to 80 mhz ? lv-pecl configuration with fast transition times ? complementary outputs ? frequency select ? patent pending technology ? product is free of lead and compliant to ec rohs directive applications pll circuits for clock smoothing and frequency translation 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 vs-751 is a saw based voltage controlled oscillator that operates at the fundamental fr equencies of the internal saw filters. these saw filters are high-q quartz devices that enable the circuit to achieve low phase jitter performance over a wide operating temperature r ange. the dual oscillator is housed in a hermetically sealed leadless surface mount package offered on tape and reel. it has a frequency select function that enables either ?frequency 1? or ?frequency 2.? pb fs vc gnd output coutput vcc saw 1 saw 2
vs-751 voltage controlled saw oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectr on-1 webs ite: www.vectr on.com page 2 of 7 rev: 07deb06 electrical performance parameter symbol minimum typical maximum units notes frequency nominal frequency absolute pull range linearity gain transfer (see pg 5) temperature stability transition time f n apr lin k v f stab 50 500 - 850 5 +405 100 4 mhz ppm % ppm/v ppm sec 1,2,3 1,2,3,8 2,4,8 2,8 1,6 6 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 swing current rise time fall time symmetry spurious suppression jitter (see pg 5) i out t r t f sym j v cc -1.4 550 45 50 v cc -1.3 650 250 250 50 60 0.130 v cc -1.2 950 20 400 400 55 0.250 v mv-pp ma ps ps % dbc ps-rms 2,3 2,3 6 5,6 5,6 2,3 6 6,7 control voltage input impedance modulation bandwidth z c bw 100 500 k ? khz 6 6 operating temperature t op -40 85 c 1,3 package size 5.0 x 7.5 x 2.5 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 guardbanded 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 50 khz to 80 mhz, per gr-253-core issue3. 8. tested with vc = 0.3v to 3.0v. 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. vc (-1.0v to +1.7v) vee (-1.3v) vcc (+2v) coutput output f1 (-0.58v), f2 (+0.59v)
vs-751 voltage controlled saw oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectr on-1 webs ite: www.vectr on.com page 3 of 7 rev: 07deb06 vs751lg xx - xx vi yww 5.100.15 [0.2010.006] mm [inch] 654 123 7.500.15 [0.2950.006] 2.490.18 [0.0980.007] 2.54 [0.100] 1.30 [0.051] y = year ww = week xx = frequency code (see ordering info) 1.27 [0.050] 1.27 [0.050] 4x r0.19 [r0.007] r0.15 [r0.006] 0.68 [0.027] mm [inch] 5.08 [0.200] 2.54 [0.100] 3.83 [0.151] 1.68 [0.066] 1.70 [0.067] 0.86 [0.034] 5.54 [0.218] 6.76 [0.266] outline diagram pad layout pin out marking key pin symbol function position 6 position 7 1 v c vcso control voltage l = lff g = gnn 2 fs frequency select (see control logic) h = hnn 3 gnd case and electrical ground 4 output vcso output control logic (lv-cmos) 5 coutput vcso comp lementary output fs operation 6 v cc power supply voltage (3.3 v 10%) 0 f1 1 f2 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 vs-751 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
vs-751 voltage controlled saw oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectr on-1 webs ite: www.vectr on.com page 4 of 7 rev: 07deb06 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 voltage control range v c 0 to v cc v storage temperature t str -55 to 125 c soldering temperature / duration t peak / t p 260 / 40 c / sec stresses in excess of the absolute maximum ratings can permanently damage the device. also, exposure to these absolute maximum ratings for extended periods ma y adversely affect device reliability. functional operation is not implied at these or any other conditi ons in excess of those represented in the operational sections of this datasheet. permanent damage is also po ssible if any device input (vc or fs) draws greater than 100ma. suggested output load configurations 4 3 240 ? 0.01 f 16 2 gnd fs 5 vc 0.10 f +3.3v 240 ? 100 ? z = 50 ? z = 50 ? coutput vcc out put 240 ? 240 ? 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. z = 50 ? 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 +3.3v vc 16 vcc 0.01 f 0.10 f gnd 34 fs 2 5 coutput output +2.0v vc 16 vcc 0.01 f 0.10 f -1.3v 34 fs 2 5 coutput output +3.3v vc 16 vcc 0.01 f 0.10 f gnd 34 fs 2 5 coutput out put
vs-751 voltage controlled saw oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectr on-1 webs ite: www.vectr on.com page 5 of 7 rev: 07deb06 y = 415.29x - 605.56 y = 398.69x - 578.48 -800 -600 -400 -200 0 200 400 600 800 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 control voltage (v) frequency (ppm) 622 vc pull 644 vc pull linear (622 vc pull) linear (644 vc pull) -155 -150 -145 -140 -135 -130 -125 -120 -115 -110 -105 -100 -95 10 100 1,000 10,000 100,000 offset (khz) l(f) (dbc/hz) oc-192 spec f1 = 622 f2 = 644 1/ f 3 1/f 2 1/ f 1 oc-192 spec equivalent to 0.25 ps-rms @ 500 mhz typical characteristics at ambient (22.5 c) typical gain transfer @ 622.0800 = +415 ppm/v t yp ical gain transfer @ 644.5313 = +399 pp m/v typical calculated jitter @ vc = 1.65v sonet oc-48 (12khz-20mhz ) = 0.23 ps-rms; 1.61 ps-pp sonet oc-192 ( 50khz-80mhz ) = 0.13 ps-rms; 0.91 ps-pp
vs-751 voltage controlled saw oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectr on-1 webs ite: www.vectr on.com page 6 of 7 rev: 07deb06 the device has been 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 vs-751 device is hermetically sealed so an aqueous wash is not an issue. terminal 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 vs-751 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 vs-751 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 desi gn protection evaluation. esd ratings model minimum conditions human body model 1500 v mil-std 883, method 3015 charged device model 1000 v jedec, jesd22-c101 reflow profile (ipc/jedec j-std-020c) 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
vs-751 voltage controlled saw oscillator vectron international, 267 lowell rd, hudson nh 03051-4916 tel: 1-88-vectr on-1 webs ite: www.vectr on.com page 7 of 7 rev: 07deb06 standard frequencies (mhz) 531.2500 p8 569.1964 p9 622.0800 p2 624.6938 pd 625.0000 p3 627.3296 p7 629.9878 pa 644.5313 p4 657.4219 pb 666.5143 p5 669.3266 r3 669.6429 r1 672.1627 r5 690.5692 r4 693.4830 r6 693.7500 r8 704.3806 tg 707.3527 tc 777.6000 t4 805.6641 ta 1. other frequencies available upon request, please contact vi for details. 2. frequency 1 must be lower than frequency 2. not all combinations are available. ordering information vs - 751 - l f f - h n n - p2 - p4 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. product family vs: vcso package 751: 5 x 7.5 x 2.5 mm input l: 3.3 v output f: lv-pecl operating temperature f: -40 to 85 c frequency 1 see above other (future use) n: n/a other (future use) n: n/a absolute pull range g: +/- 50 ppm h: +/- 100 ppm frequency 2 see above 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
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