product data sheet VS-500A v oltage controlled saw oscillator features ?output frequencies from 155 mhz to 800 mhz ?low jitter < 1 ps rms in the 12khz to 20mhz range ?< 1ps rms jitter in 50khz to 80mhz range ?3.3v (see vs-500) or 5.0v operation ?ideal for clock smoothing, frequency translation, clock and data retiming applications ?10k ecl, pecl logic levels with fast transition times ?complementary outputs ?low profile, surface mount package ?output disable feature applications ?2.5, 10 gbit/s fec and standard sonet/sdh clock smoothing and frequency translation ?10 gigabit ethernet clock smoothing ?frequency translation description the VS-500A is a saw based voltage controlled oscillator that operates at the fundamental frequency of the internal saw filter. this resonator is a high-q quartz device that enables the circuit to achieve low phase jitter performance over a wide operating temperature r ange. the oscillator is housed in a hermetically sealed j-lead surface mount package offered on tape and reel. it has an output disable to facilitate on-board testing.
VS-500A voltage controlled saw oscillator pin information ta b le 1. pin function p erformance characteristics v ectron international 267 lowell road, hudson, nh 03051 tel: 1-88-vectron-1 fax: 1-888-fax-vectron 2 pin symbol function 1 v c vcso control voltage 2 od output disable 3 gnd case and electrical ground 4 output vcso output 5 coutput vcso complimentary output 6 v cc po w er supply voltage (5.0 v 10%) 1. by setting od low, the outputs are disabled and out is held high while complementary out is held low. the threshold for output disable is 1.4v above pin 3. output disable should not be driven above mid supply and during normal operation, should be left floating (use with an open collector or 3-state gate for interfacing with standard logic). p arameter symbol minimum typical maximum units center frequency, see ordering information f n 155 800 mhz operating temperature t op -40 25 +85 ?c supply current (no load) i cc 55 70 ma supply voltage v cc 4.5 5 5.5 v absolute pull range over -40 to 85?c apr 50 - - ppm (vc= 0.5 to 4.5) p ositive gain transfer @ 155.52mhz k v - 350 - ppm/v (frequency vs control voltage) p ositive gain transfer @ 622.080mhz k v - 200 - ppm/v (frequency vs control voltage) linearity lin 3 % f requency stability, -40 to 85 wrt 25?c f stab 150 ppm output level low 1 v ol v cc -1.95 - v cc -1.63 v output level high 1 v oh v cc -0.98 - v cc -0.75 v output rise time 2 t r 250 400 ps output fall time 2 t f 250 400 ps jitter @ 155.520 mhz, 12 khz to 20 mhz 0.439 ps, rms jitter @ 622.080 mhz, 12 khz to 20 mhz 0.276 ps, rms jitter @ 622.080 mhz, 50 khz to 80 mhz 0.293 ps, rms spurious suppression -50 -60 db data symmetry sym 45 49/51 55 % control voltage input impedance zc 8 10 12 k ?
VS-500A voltage controlled saw oscillator v ectron international 267 lowell road, hudson, nh 03051 tel: 1-88-vectron-1 fax: 1-888-fax-vectron 3 4 5 output 6 cout put vcc vc 1 od 2 3 gnd +5.0v 120 120 82 82 .01uf .1uf +5.0v +5.0v (from pll) vcc cout put output (from pll) od 3 gnd 2 4 5 vc 1 6 330 330 .1uf .01uf +5.0v (a c c oupling) (a c c oupling) ote 2 to diasle output connect output disale to ground. to enale output leae pin 2 loating or open. figure 1 pecl operation
VS-500A voltage controlled saw oscillator v ectron international 267 lowell road, hudson, nh 03051 tel: 1-88-vectron-1 fax: 1-888-fax-vectron 4 4 5 output 6 cout put vcc vc 1 od 2 3 gnd -5.0v 120 120 80 80 -5.0v (from pll) vcc cout put output (from pll) od 3 gnd 2 4 5 vc 1 6 330 330 (ac coupling) (ac coupling) .01uf 0.1uf -5.0v -5.0v -5.0v -5.0v .01uf 0.1uf ote1 conductie lid ill e -5v or ecl coniguration ote 2 to diasle output connect output disale to 5v. to enale output leae pin 2 loating or open. figure 2. ecl operation
VS-500A voltage controlled saw oscillator v ectron international 267 lowell road, hudson, nh 03051 tel: 1-88-vectron-1 fax: 1-888-fax-vectron absolute maximum ratings stresses in excess of the absolute maximum ratings can permanently damage the device. functional operation is not implied at the se or any other conditions in excess of conditions represented in the operational sections of this data sheet. exposure to absolute maximu m ratings for e xtended periods may adversely affect device reliability. p arameter symbol ratings unit po w er supply v cc 0 to 8 v output current 1 iout 20 ma output current 2 iout 50 ma v oltage control range 1 v c 0 to v cc v v oltage control range 2 v c -0.5 to v cc +0.5 v storage temperature t s -55 to 125 ?c soldering temp./time t ls 220/10 ?c/seconds ta b le 4. absolute maximum ratings 1 limts beyond which performance can not be guaranteed. 2 limits beyond which device life may be impaired. p arameter 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 qualification conformance the VS-500A family passes the following mil-std qualification. ta b le 5. environmental compliance 5
VS-500A voltage controlled saw oscillator v ectron international 267 lowell road, hudson, nh 03051 tel: 1-88-vectron-1 fax: 1-888-fax-vectron 6 handling precautions although esd protection circuitry has been designed into the the VS-500A proper precautions should be taken when handling and mounting. vi employs a human body model and a charged-device model (cdm) for esd sus- ceptibility 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 resis- tance = 1.5kohms and capacitance = 100pf is widely used and therefore can be used for comparison purposes. model minimum human body model 1500v charged device model 1000v ta b le 6. esd ratings time(s) temperature(c) figure 5. uggested ir proile vi ualiication includes aging at arious etreme temperatures shoc and iration temperature ccling and ir relo simulation. the conditions a deice can ithstand are ell understood and deices can e suected to the proile in igure 5. this proile shos a ramp up condition to preent thermal shoc a preheat period in hich the lu is actiated a ramp up to 183c hich is the relo temperature o np eutectic and a gradual cool don. the time aoe 183c should not eceed 60 seconds and the pea temperature should e no more than 220c or 10 seconds. the v-500as are 100 screened or hermiticit so an aueous ash is not an issue.
VS-500A voltage controlled saw oscillator dimens ions are in inches and (millimeters) 0.118 (3.00) 0.200 (5.08) 0.100 (2.54) 0.346 (8.80) 0.050 (1.27) figure 7. suggested pad layout v ectron international ? 267 lowell road, hudson, nh 03051 tel: 1-88-vectron-1 ?fax: 1-888-fax-vectron figure 6. outline diagram
usa: v ectron international ?267 lowell road, 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 / 41 / 42 ? fax: +86 21 28909240 / 2890999 i v ectron 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 produ ct(s) or information. 2001, vectron international printed in usa 2/02 www.vectron.com for additional information please contact: VS-500A voltage controlled saw oscillator 8 a e c d b g f j l i k h t ape dimensions reel dimensions # per reel product a b c d e f g h i j k l VS-500A 24 11.5 1.5 4 12 1.78 21 13 100 5 25 330 200 ta b le 7. tape and reel dimensions (mm) ordering information ta b le 8. available frequencies (mhz) figure 8. tape reel drawing other frequencies available upon request 155.520 156.250 161.1328 166.6286 177.7371 311.040 622.080 624.7048 625. 000 627.3296 644.5313 666.5143 669.1281 669.3265 690.5692 719.7344 759.410 765.5906 767.250 777.600
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