vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 1 of 9 features applications vx-721 features applications description vx-721 single frequency hpll vcxo the vx-721 is a voltage controlled crystal oscillator, vcxo, based upon vectrons hpll high performance phase locked loop frequ ency multiplier asic that combines key digital synthesis techniques with vis proven core analog technology blocks. a standard low frequency crystal provides the reference to the fractional-n synthesizer so that virtually any frequency between 10mhz and 1200 mhz can b e factory programmed allowing quick turn manufacturing. industry standard package, 5.0 x 7.0 x 1.8 mm t hpll high performance pll asic t jitter < 500 fs-rms (12 khz to 20 mhz) t output frequencies from 10 mhz to 1200 mhz t spurious suppression, 70 dbc typical t 2.5v or 3.3v supply voltage t lvcmos, lvpecl or lvds output configurations t output enable t compliant to ec rohs directive t pll circuits for clock smoothing and frequency translation description standard 1-2-4 gigabit fibre channel t 10 gigabit fibre channel t 10gbe lan / wan t synchronous ethernet t oc-192 t sonet / sdh t incits 352-2002 incits 364-2003 ieee 802.3ae itu-t g.8262 itu-t g.709 gr-253-core issue4 block diagram v dd coutput output vc oe gnd xtal lvcmos lvpecl lvds hpll figure 1 - block diagram rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 2 of 9 electrical performance parameter test conditions symbol min typ max units supply voltage 1 3.3v option 2.5v option v dd 2.97 2.25 3.3 2.5 3.63 2.75 v current lvcmos lvds lvpecl i dd - - - 90 99 120 98 108 130 ma operating temperature 1, 3 t op -40 - +85 c output enable (oe) v ih 0.75 x v dd -- v v il - - 0.5 frequency nominal frequency 1 lvpecl/lvds lvcmos f n 10 10 - - 1200 160 mhz absolute pull range 1, 2, 3 v c = 0.1xv dd to 0.9xv dd apr 50 - - ppm linearity 2, 4 20% to 80% full output lin - - 10 % gain transfer 2, 10 to 90% of v dd k v - +100 - ppm/v temperature stability 1, 6 t a = -40 to +85c f stab - 20 - ppm outputs lvpecl output mid-level v o v dd -1.42 - v dd -1.25 v swing (diff ) v od 1.1 - 1.9 v pp lvds output mid-level v o 1.4 1.6 1.8 v swing (diff ) v od 300 450 600 mv pp lvcmos output v oh 0.9 x v dd -v dd v v ol - - 0.1 x v dd v rise/fall time (20/80%) 2,5 lvpecl/lvds lvcmos with c l = 15 pf t r/ t f - - - - 350 1.2 ps ns symmetry 2,3 lvpecl: v dd -1.3 v (diff ) lvds: 1.6 v (diff ) lvcmos: v dd /2 sym 45 50 55 % spurious suppression 6 65 70 - dbc jitter 6 (performance option n) 12 khz to 20 mhz j - - 1000 fs-rms jitter 6 (performance option a) 12 khz to 20 mhz j - - 500 fs-rms control voltage input impedance (output enabled) 6 z c 500 - - k modulation bandwidth bw - 10.0 - khz control voltage tuning range v c 0-v dd v vx-721 single frequency hpll vcxo see standard frequencies and ordering information (pg 8). 1] parameters are tested with production test circuit (see figure 2 for lvcmos, figure 3 for lvpecl and figure 4 for lvds). 2] parameters are tested at ambient temperature with test limits guard-banded for specified operating temperature. 3] measured as the maximum deviation from the best straight-line fit, per mil-0-55310. 4] parameters are described with waveform diagram below (figure 5). 5] not tested in production, guaranteed by design, verified at qualification. 6] performance speci?caons rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 3 of 9 test circuits & output waveform absolute maximum ratings parameter symbol ratings unit power supply v dd 0 to 3.8 v input current i in 100 ma output current i out 25 ma voltage control range v c 0 to v dd v output enable oe 0 to v dd v storage temperature t str -55 to 125 c soldering temperature / duration t peak / t p 260 / 40 c / sec vx-721 single frequency hpll vcxo figure 2 - lvcmos production test circuit figure 3 - lvpecl production test circuit figure 4 - lvds production test circuit figure 5 - waveform diagram +3.3v scope vmd 10k 10nf 10nf 10nf 1nf vc oe 1 2 3 4 5 6 nc 39 200 +3.3v scope vmd 200 10k 10k 10nf 10nf 10nf 10nf 1nf vc oe 1 2 3 4 5 6 +3.3v scope vmd 10k 10k 10nf 10nf 10nf 10nf 1nf vc oe 1 2 3 4 5 6 80 % vs 20 % t f t r period on time rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 4 of 9 vx-721 single frequency hpll vcxo lvpecl applicaon diagrams lvds applicaon diagrams figure 6 - single resistor terminaon scheme figure 7 - pull up pull down terminaon resistor values are typically 120 to 240 ohms for 3.3v operaon and 82 to 120 ohms for 2.5v operaon. resistor values are typically for 3.3v operaon for 2.5v operaon, the resistor to ground is 62 ohms and the resistor to supply is 240 ohms there are numerous applicaon notes on terminang and interfacing pecl logic and the two most common methods are a single resis tor to ground, figure 6, and a pull-up/pull-down scheme as shown in figure 7. an ac coupling capacitor is oponal, depending on the applicaon and the input logic requirements of the next stage. one of the most important consideraons is terminang the output and complementary outputs equally. an unused output should no t be le un- terminated, and if one of the two outputs is le open it will result in excessive jier on both. pc board layout must take this and 50 ohm impedance matching into account. load matching and power supply noise are the main contributors to jier related problems. some lvds structures have an internal 100 ohm resistor on the input and do not need addional components. one of the most important consideraons is terminang the output and complementary outputs equally. an unused output should no t be le un- terminated, and if one of the two outputs is le open it will result in excessive jier on both. pc board layout must take thi s and 50 ohm impedance matching into account. load matching and power supply noise are the main contributors to jier related problems. figure 8 - lvds to lvds, internal 100 figure 9 - lvds to lvds, external 100 and ac block ing caps 240 240 vc oe 1 2 3 4 5 6 +3.3v 10nf 1nf 10nf 10nf 130 vc oe 1 2 3 4 5 6 130 +3.3v 82 82 +3.3v 10nf 1nf 10nf 10nf 100 receiver vc oe 1 2 3 4 5 6 +3.3v 10nf 1nf 100 receiver vc oe 1 2 3 4 5 6 +3.3v 10nf 1nf 10nf 10nf rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 5 of 9 typical characteristics vx-721 single frequency hpll vcxo figure 10 - typical phase noise/jitter performance - integer mode figure 11 - typical vc pull rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 6 of 9 reliability vi qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and ir reflow simulation. the vx-721 family is capable 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 moisture sensitivity level ipc/jedec j-std-020, msl1 handling precautions esd ratings model minimum conditions human body model 1000v mil-std-883, method 3015 charged device model 900v jedec, jesd22-c101 machine model 200 v jedec, 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 c/sec max time above 217 c t l 60 sec min, 150 sec max time to peak temperature t amb-p 480 sec max time at 260 c t p 20 sec min, 40 sec max ramp down r dn 6 c/sec max although esd protection circuitry has been designed into the vx-721 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. 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 vx-721 device is hermetically sealed so an aqueous wash is not an issue. terminal plating: electrolytic ni > 1.9m electrolytic au > 0.7m vx-721 single frequency hpll vcxo rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 7 of 9 outline & marking diagram pin out pin symbol function 1 v c control voltage 2 oe output enable 1 3 gnd case and electrical ground 4 output output 5 coutput (n/a for lvcmos) complementary output (n/c for lvcmos) 6 v dd power supply voltage tape & 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 reel tolerance typ typ typ typ typ typ min typ min min typ max vx-721 16 7.5 1.5 4 8 178 1.5 13 20.2 50 16.4 22.4 200 output enable is internally pulled to v dd with a 30 k resistor. if option c is selected, oe must be pulled low by the user with a lvcmos logic device or a 3 k resistor to ground. od = outputs disabled oe = outputs enabled suggested pad layout output enable option symbol function result a h (3v dd /4) to v dd oe l gnd to 0.5 v od c h (3v dd /4) to v dd od l gnd to 0.5 v oe vx-721 single frequency hpll vcxo y = year ww = week c = option codes xxxmxxx = frequency (see ordering info) inch [mm] 1.96 3.66 5.08 2.54 1.78 rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 8 of 9 vx-721 single frequency hpll vcxo standard factory configurable frequencies (mhz) 18.7500000 39.0625000 73.7280000 173.370748 622.080000 781.250000 19.2000000 39.3216000 74.1250000 173.437500 624.693800 796.875000 19.3926580 39.8437500 74.1758000 176.838175 624.704800 800.000000 19.4400000 40.0000000 74.2500000 182.016000 625.000000 805.664100 19.5312500 40.2830630 75.0000000 182.857142 627.329600 809.063500 19.6608000 40.9600000 76.8000000 184.000000 629.987800 819.200000 19.6989680 41.0888870 77.7600000 184.320000 637.500000 821.777300 19.7190000 41.6571440 78.0000000 187.500000 640.000000 850.000000 19.9218750 41.6600000 78.1250000 195.000000 644.531250 983.400000 20.0000000 41.8329130 78.6432000 200.000000 645.120000 1,000.0000 20.1416000 42.0000000 79.6875000 200.192000 647.239400 20.4800000 42.0101690 80.0000000 201.416020 647.250800 recent adds: 20.5444340 42.5000000 80.5664130 212.500000 649.970300 174.703083 20.7135000 42.6600000 82.1777380 219.429571 657.421875 175.000000 20.8285720 44.2095440 82.9440000 240.000000 665.625600 698.812330 20.8286000 44.4343000 83.3142880 243.000000 666.514286 20.9165460 44.6218000 83.6658250 245.760000 669.128100 21.0050840 44.7360000 84.0203380 250.000000 669.326582 22.0000000 44.9280000 86.6853740 252.571428 669.642900 22.1047720 45.1584000 88.4190880 256.000000 670.838600 22.2171000 45.8240000 95.7000000 262.144000 672.000000 22.5792000 46.0379460 97.5000000 292.571429 672.156250 24.0000000 46.7200000 100.000000 300.000000 672.162712 24.5760000 46.8750000 105.000000 307.200000 673.456600 24.7040000 48.0000000 106.250000 311.040000 684.255400 25.0000000 49.1520000 108.000000 312.500000 687.700000 25.1658000 49.4080000 110.000000 318.750000 690.569196 25.6000000 50.0000000 112.000000 320.000000 693.468750 25.9200000 50.0480000 114.000000 322.265650 693.482991 26.0000000 51.2000000 120.000000 328.710950 693.750000 27.0000000 51.8400000 122.880000 333.257150 696.390625 27.6480000 52.0000000 124.416000 334.663300 696.421478 28.7040000 53.3300000 125.000000 336.081350 696.421875 29.4912000 54.7460000 130.000000 353.676350 704.380600 29.5000000 55.0000000 131.072000 368.640000 707.352700 30.0000000 60.0000000 139.264000 375.000000 707.500000 30.7200000 61.3800000 150.000000 382.800000 710.948600 30.8800000 61.4400000 150.144000 400.000000 712.520000 31.2500000 62.2080000 153.600000 409.600000 716.573200 32.0000000 62.5000000 155.520000 491.520000 718.750000 32.7680000 62.9145000 156.250000 500.000000 719.734400 33.0000000 63.3600000 159.375000 505.000000 737.280000 33.3330000 63.8976000 160.000000 531.000000 739.200000 34.3680000 64.0000000 161.132813 531.250000 742.500000 34.5600000 64.1520000 164.355475 568.928600 748.070900 36.8640000 65.5360000 166.628572 569.196400 750.000000 37.0560000 66.0000000 167.331646 588.000000 768.000000 37.1250000 70.0000000 168.040678 595.056000 777.600000 37.5000000 70.6560000 170.000000 600.000000 779.568600 38.8800000 71.6100000 172.500000 614.400000 780.881000 standard frequency table standard frequency table rev2: 14 november 2012
vectron internaonal ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? hp://www.vectron.com page 9 of 9 vx-721 single frequency hpll vcxo 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 1589 century avenue, the 19th floor chamtime international financial center shanghai, china tel: 86.21.6081.2888 fax: 86.21.6163.3598 vx - 721 - e c e - k e a a - xxxmxxxxxx product family vx: vcxo package 721: 5 x 7 x 1.8 mm supply e: 3.3 v h: 2.5 v output a: lvcmos c: lvpecl d: lvds operating temperature t: 0/70c e: -40/85 c frequency (see above) 10m0000000 - 1200m00000 stability x: standard e: 20ppm temperature stability enable/disable a: enable high c: enable low absolute pull range k: 50 ppm example: vx-721-ece-kxcn-1000m00000 performance options n: standard a: < 500 fs-rms jitter rev2: 14 november 2012
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