VX-700 voltage controlled crystal oscillator previous vectron model vc-710 the VX-700 is a voltage controlled crystal oscillator that operates at the fundamental frequency of the internal hff crystal. the hff crystal is a high-q quartz device that enables the circuit to achieve low phase jitter performance over a wide operatin g temperature range. the VX-700 is housed in an industry standard hermetically sealed lcc package and available in tape and reel. fundamental vcxo with no subharmonics or spurs ? low jitter, sub 1ps performance ? output frequencies from 77.76 mhz to 200 mhz ? 3.3 v operation ? lvpecl output ? output disable feature ? excellent 20ppm temperature stability, ? 0/70c or -40/85c operating temperature ? small industry standard package, 5.0x7.5x1.8mm ? product is free of lead and compliant to ec rohs directive ? ideal for pll circuits for clock smoothing and frequency translation features applications block diagram description VX-700 sonet, sdh ? synchronous ethernet ? fiber channel ? lan / wan ? test and measurement ? v dd output v c gnd oscillator crystal e/d complementary output page1 rev: 11/24/2009 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com
performance speci cations table 1. electrical performance parameter symbol min typical maximum units supply voltage 1 v dd 3.135 3.3 3.465 v current (no load) i dd 50 90 ma frequency nominal frequency 2 f n 77.7600 200 mhz absolute pull range 3,6 apr 50 ppm linearity 3 lin 5 10 % gain transfer positive 3 (see pg 5) k v +65 ppm/v temperature stability 3 f stab 20 ppm outputs output logic levels 3 output logic high output logic low v oh v ol v dd -1.025 v dd -1.810 v dd -0.950 v dd -1.700 v dd -0.880 v dd -1.620 v current i out 20 ma rise time 4 fall time t r t f 1 1 ns ns symmetry 3 sym 45 50 55 % jitter (12 khz - 20 mhz bw)155.52mhz 5 j 0.3 0.5 ps jitter (50 khz - 80 mhz bw)155.52mhz 5 j 0.5 0.7 ps period jitter, rms (155.520 mhz) 7 j 3.0 ps period jitter, peak - peak (155.520mhz) 7 j 20 ps spurious suppression 2 -80 dbc control voltage control voltage range for apr v c 0.3 3.0 v control voltage input impedance z in 10 m control voltage modulation bw bw 10 20 khz enable/disable output enabled, option a 8 output disabled, option a v ih v il 0.7*v dd 0.3*v dd v v output enabled, option c 8 output disabled, option c v il v ih 0.7*v dd 0.2*v dd operating temperature t op 0/70 or -40/85 c package size 5.0 x 7.5 x 1.8 mm fig 1: test circuit fig 2: lvpecl waveform the VX-700 power supply should be ltered, eg, 0.1 and 0.01uf to ground 1] see standard frequencies and ordering information tables for more speci c information 2] parameters are tested with production test circuit below (fig 1). 3] measured from 20% to 80% of a full output swing (fig 2). 4] integrated across stated bandwidth. 5] tested with vc = 0.3v to 3.0v unless otherwise stated in part description 6] broadband period jitter measured using lecroy wavemaster 8600a 6 ghz oscilloscope, 25k samples taken. see application note. 7] output is enabled if e/d is left oating 8] sym = 100 x t a / t r t f t r t a t r page2 rev: 11/24/2009 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com
outline drawing & pad layout table 2. pin out pin symbol function 1 v c vcxo control voltage 2 oe enable/disable **see ordering options** 3 gnd case and electrical ground 4 output output 5 coutput complementary output 6 v cc power supply voltage (3.3v 10%) dimensions in inches (mm) x x x . x x x x xxx.xxxx x x x . x x xxx.xx typical phase noise typical gain VX-700 @ 128.00 mhz -200 -150 -100 -50 0 50 100 150 200 0 0.5 1 1.5 2 2.5 3 vc (volts) pull (ppm) 0 20 40 60 80 100 120 140 gain (ppm/v) pull gain vx700 yww ccc-cccc xxxmxxx page3 rev: 11/24/2009 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com
typical characteristics - phase noise reliability vi quali cation includes aging at various extreme temperatures , shock and vibration, temperature cycling, and ir re ow simulation. the VX-700 family is capable of meeting the following quali cation tests: 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 2015 moisture sensitivity level msl 1 contact pads gold over nickel table 4. absolute maximum ratings parameter symbol ratings unit power supply v dd 0 to 6 v output current i out 25 ma voltage control range v c 0 to v cc v 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 device. functional operation is not implied at these or any other conditions in excess of conditions represented in the operational sections of this datasheet. exposure to absolute maximum ratings for extended periods may adversely a ect device reliability. permanent damage is also possible if od or vc is applied before vcc. although esd protection circuitry has been designed into the VX-700 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. table 5. esd ratings model minimum conditions human body model 500v mil-std-883, method 3015 charged device model 500v jesd22-c101 suggested output load con gurations page4 rev: 11/24/2009 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com figure 3 standard pecl output con guration figure 4 single resistor termination scheme resistor values are typically 120 to 240 ohms figure 5 pull-up pull-down termination the VX-700 incorporates a standard pecl output scheme, which are un-terminated emitters as shown in figure 3. there are numerou s application notes on terminating and interfacing pecl logic and the two most common methods are a single resistor to ground, figure 4, and a pull -up/pull-down scheme as shown in figure 5. an ac coupling capacitor is optional, depending on the application and the input logic requirements of th e next stage. one of the most important considerations is terminating the output and complementary outputs equally. an unused output should n ot be left un-termi- nated, and if it one of the two outputs is left open it will result in excessive jitter 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 jitter related problems.
tape & reel (eia-481-2-a) table 7. tape and reel information 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-700 16 7.5 1.5 4 8 178 1.5 13 20.2 50 16.4 22.4 200 ir ir re ow table 6. re ow pro le (ipc/jedec j-std-020c) parameter symbol value preheat time ts-min ts-max t s 60 sec min, 180 sec max 150c 200c 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 25c to peak 480 sec max time at 260 c t p 20 sec min, 40 sec max ramp down r dn 6 c/sec max the device is 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 VX-700 device is hermetically sealed so an aqueous wash is not an issue. termination plating: electroless gold plate over nickel plate page5 rev: 11/24/2009 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com
table 8. standard output frequencies (mhz) 77.76000 80.00000 81.00000 88.47360 91.08000 92.16000 93.31200 96.00000 100.00000 101.99200 102.40000 106.25000 108.00000 110.00000 112.00000 112.64000 120.00000 122.80000 122.88000 124.41600 125.00000 128.00000 133.33000 134.21770 134.40000 135.00000 138.04860 139.23000 139.26400 139.50000 143.36000 144.00000 148.35160 148.50000 150.00000 153.60000 154.00000 155.52000 156.25000 157.50000 160.00000 161.13280 162.00000 166.62700 166.62860 167.33160 168.04067 175.00000 175.59375 180.00000 184.00000 184.32000 186.66600 187.50000 192.00000 192.45600 200.0000 page6 rev: 11/24/2009 vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? http://www.vectron.com 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 VX-700- e c e - k x a n - xxxmxxxxxx product vcxo, 5x7 package voltage options e: +3.3 vdc 5%, output c: lvpecl stability x: standard e: 20ppm temperature stability frequency in mhz *note: not all combination of options are available. other speci cations may be available upon request. temp range t: 0/70c e: -40/85c other (future use) n: standard absolute pull range k: 50ppm enable/disable a: enable high c: enable low example: VX-700-ece-kxan-155m520000
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