vectron international 267 lowell road, hudson nh 03051 tel: 1-88-vectron-1 e-mail: vectron@vectron.com vcb2 series 3.3, 5.0 volt cmos oscillator the vcb2 crystal oscillator features ? cmos output ? output frequencies to 160 mhz ? tri-state output for board test and debug ? 0/70 or ?40/85 c operating temperature ? product is compliant to rohs directive and fully compatible with lead free assembly applications ? sonet/sdh/dwdm ? ethernet, gigabit ethernet ? storage area network ? digital video ? broadband access ? microprocessors/dsp/fpga description vectron?s vcb2 crystal o scillator (xo) is quartz stabilized square wave generator with a cmos output, operating off a 3.3 or 5.0 volt supply. the vcb2 uses fundamental or 3 rd overtone crystals, for output frequencies < 80mhz, resulting in low jitter performance, typically 0.5ps rms in the 12 khz to 20mhz band. f o output buffer / disable
vectron international 267 lowell rd, hudson nh 03051 te l: 1-88-vectron-1 e-mail: vectron@vectron.com performance characteristics table 1. electrical performance, 5v option parameter symbol min typical maximum units frequency f o 0.032768 160.000 mhz operating supply voltage 1 v dd 4.5 5.0 5.5 v absolute maximum supply voltage -0.7 7.0 v supply current, output enabled 0.032768 to 2.0 mhz 2.01 to 30 mhz 30.01 to 50 mhz 50.01 to 160.00 mhz i dd 10 15 40 50 ma output logic levels output logic high 2 output logic low 2 v oh v ol 0.9*v dd 0.1*v dd v v output rise/fall time 2 0.032768 to 2.00 mhz 2.01 to 20.00 mhz 20.01 to 160.00 mhz t r/ t f 10 8 5 ns duty cycle 3 (ordering option) sym 40/60 or 45/55 % operating temperature ( ordering option )t op 0/70 or -40/85 c storage temperature t stor -55 125 c stability 4 ( ordering option) ? f/t 20, 25, 32, 50, 100 ppm output enable/disable 5 output enabled output disabled e/d 4.0 0.8 v start-up time t su 10 ms 1. a 0.01uf and a 0.1uf capacitor should be located as clos e to the supply as possible (to ground) is recommended. 2. figure 1 defines these parameters. figure 2 illustrates t he operating conditions under which these parameters are tested an d specified. 3. symmetry is measured defined as on time/period. 4. includes calibration tolerance, operating temperature, s upply voltage variations, aging and shock and vibration (not under operation). 5. output will be enabled if enable/disable is left open. figure 1. output waveform figure 2. typical output test conditions (25 5c) + - + - i c v c 3 2 . 1 f .01 f 15pf 4 1 i dd v dd v oh 50% v ol t f t r period on time
vcb2 data sheet vectron international 267 lowell rd, hudson nh 03051 tel: 1-88-vectron-1 e-mail vectron@vectron.com table 2. electrical performance, 3.3v option parameter symbol min typical maximum units frequency f o 0.032768 160.000 mhz operating supply voltage 1 v dd 2.97 3.3 3.63 v absolute maximum operating voltage -0.5 5.0 v supply current, output enabled 0.032786 to 2.0 mhz 2.01 to 30 mhz 30.01 to 50 mhz 50.01 to 160 mhz i dd 8 10 20 35 ma output logic levels output logic high 2 output logic low 2 v oh v ol 0.9*v dd 0.1*v dd v v output rise/fall time 2 0.032768 to 2.00 mhz 2.01 to 20.00 mhz 20.01 to 160.00 mhz t r/ t f 12 10 6 ns duty cycle 3 (ordering option) sym 40/60 or 45/55 % operating temperature ( ordering option )t op 0/70 or ?40/85 c storage temperature t stor -55 125 c stability 4 ( ordering option) ? f/t 20, 25, 32, 50, 100 ppm output enable/disable 5 output enabled output disabled e/d 2.0 0.5 v start-up time t su 10 ms 1. a 0.01uf and a 0.1uf capacitor should be located as clos e to the supply as possible (to ground) is recommended. 2. figure 3 defines these parameters. figure 4 illustrates t he operating conditions under which these parameters are tested an d specified. for fo>90mhz, rise and fall time is measured 20 to 80%. 3. symmetry is measured defined as on time/period. 4. includes calibration tolerance, operating temperature, s upply voltage variations, aging and shock and vibration (not under operation). 5. output will be enabled if enable/disable is left open. figure 3. output waveform figure 4. typical output test conditions (25 5c) + - + - i c v c 3 2 . 1 f .01 f 15pf 4 1 i dd v dd v oh 50% v ol t f t r period on time
vcb2 data sheet vectron international 267 lowell rd, hudson nh 03051 tel: 1-88-vectron-1 e-mail vectron@vectron.com enable/disable functional description under normal operation the enable/disable is left open or set to a logic high state. when the e/d is set to a logic low, the oscillator stops and the output is in a high impedance state. this helps reduce power consumption as well as facilitat ing board testing and troubleshooting. tri-state functional description under normal operation the tri-state is left open or set to a logic high state. when the tri-state is set to a logic low, the oscillator remains active but the out put buffer is in a high impedance state. this helps facilitate board testing and troubleshooting. table 3. outline diagrams and pin out pin # symbol function 1 e/d or nc tri-state, enable/disable or nc 2 gnd electrical and case ground 3 f o output frequency 4 v dd supply voltage figure 5, package drawing
vcb2 data sheet vectron international 267 lowell rd, hudson nh 03051 tel: 1-88-vectron-1 e-mail vectron@vectron.com reliability the vcb2 qualification tests have included: table 4. environnemental compliance parameter conditions mechanical shock mil-std-883 method 2022 mechanical vibration mil-std-883 method 2007 temperature cycle mil-std-883 method 1010 gross and fine leak mil-std-883 method 1014 resistance to solvents mil-std-883 method 2015 handling precautions although esd protection circuitry has been designed in to the the vcb2, proper precautions should be taken when handling and mounting. vi employs a human body model and a charged-device model (cdm) for esd susceptibility testing and design prot ection evaluation. esd thresholds are dependent on the circuit parameters used to define the m odel. although no industry wide standard has been adopted for the cdm, a standard hbm of resistance = 1. 5kohms and capacitance = 100pf is widely used and therefore can be used for comparison purposes. table 5. esd ratings model minimum conditions human body model 1000 mil-std-883 method 3115 charged device model 1500 jesd 22-c101 suggested ir profile devices are built using lead free epoxy and can also be subjected to standard lead free ir reflow conditions, table 6 shows max temperatures and lo wer temperatures. a peak temperature of 240c minimum should be used to reflow the lead solder. table 6. reflow profile (ipc/jedec j-std-020b) parameter symbol value preheat time t s 150 sec min, 200 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 (max) t p 10 sec max time at 240 c (max) t p2 60 sec max ramp down r dn 6 o c/sec max
vcb2 data sheet vectron international 267 lowell rd, hudson nh 03051 tel: 1-88-vectron-1 e-mail vectron@vectron.com ordering information: vcb2 - - product family output frequency crystal oscillator in mhz ? size dip voltage options a: +5.0 vdc +/-10%, 15pf b: +3.3 vdc +/-10%, 15pf c: +3.0 vdc +/-5%, 15pf e: +5.0 vdc +/-10%, 50pf f: +3.3vdc +/-5%, 50pf electrical options 3: tri-state, 45/55% duty the following codes are not recommended for new designs 0: no tri-state, 40/60% duty 1: tri-state, 40/60% duty 2: no tri-state, 45/55%duty 5: enable, 40/60% duty 6: enable, 45/55% duty stability options a: 100ppm, 0 to 70c c: 100ppm, -40 to 85c b: 50ppm, 0 to 70c d: 50ppm, -40 to 85c e: 25ppm, 0 to 70c f: 25ppm, -40 to 85c g: 20ppm, 0 to 70c note: not all combinations are available . tri-state with a 45/55% is the most common electrical code and is recommended for most applications. devices will be shipped in anti static tubes www.vectron.com july 17, 2006 for additional information, please contact: usa: vectron international ? 267 lowell road, hudson, nh 03051 ? tel: 1-88-vectron-1 ? fax: 1-888-fax-vectron europe: landstrasse, d-74924, neckarbischofsheim, germany ? tel: 49 (0) 7268 8010 ? fax: 49 (0) 7268 801281 asia: vectron asia pacific sales 1f~2f. no.8 workshop no.308 fenju rd., waigaoqiao free trade zone, pudong new area shanghai, china 200131 ?tel: 8621 50480777 ? fax: 8621 50481881 b 3 b 25m00
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