VSC7965 transport physical l aye r vppd-01136 rev ision 1.1 VSC7965 bpon onu mod ule vsc79 65 bu rst-m ode la s er driver conne ctor t ri plexor micr oco nt ro ll er sp i f au lt an d con trol lo gic adc ana log mux tia a t 1490 nm lase r at 1310 nm ana log video rec eive at 1555 nm c atv rec eive vi deo amp li fier downstr ea m vi deo at 155 5 n m dow ns tr eam r eceiv e da ta at 149 0 n m up st r eam da ta at 131 0 n m limiting amp lifier mo n_ se l features: applica tions: application diagram: benefits: ? apc loop requires no initialization phase ? VSC7965 meets the specification for bpon, ge-pon, and g pon ? burst enable input supports lvpecl, lvds, and lvttl output levels ? selectable resistance on monitor diode input ? laser driver crossing point control ? built-in eye safety support ? laser driver is ready to transmit upon power up ? allows the VSC7965 to be used in both pon and sfp module solutions ? allows pon module to interoperate with multiple upstream devices ? improves accuracy of the monitor diode input by all owing the use r to select the resistance and capacitance in the input ? enables the user to adjust the level of the crossing point on the laser driver output ? no external components are required to meet iec-60825 eye safety specifications ? bpon, ge-pon, gpon burst-mode laser driver specifications: ? package size: 5 mm x 5 mm qfn ? maximum modulation = 80 ma ? typ ical core power = 330 mw ? operating temperature range = -40 c to 100 c pon integrated 155 mbps to 1.25 gbps burst-mode laser driver and limiting amplifier
tra demarks tm vit esse, asic-friendly, fi bretimer , t imestream, snoop loop, super fec, focusconnect, meigs-ii, meigs-iie, lansing, campbell-i, barrington, pacemaker, hovcat48, hovcat48e, hovcat192, hovcat192e, micro phy, focus32, focus16, iq2200, nexsas, v ersacat , gigastream, hawx, sparx, stax, vstax, simpliphy ,veriphy , actiphy , xfp pr o, sfp pr o, smart-link, octalmac, eq te c hnology are trademarks in the united states and/or other jurisdictions of v itesse semiconductor corporation. all other trademarks or registered trademarks mentioned herein are the property of their respective holders. vit esse semiconductor corporation (?v itesse?) retains the right to make changes to its products or specifications to improve performance, reliability or manufacturability. all information in this document, including descriptions of features, functions, performance, technical specifications and avai lability, is subject to change without notice at any time. while the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by vit esse for its use. furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent right of any manufacturer. copyright ? 2005?2006 741 calle plano camarillo, ca 93012, usa tel : +1 805.388.3700 fax: +1 805.987.5896www .vitesse.com sales@vite sse.com VSC7965 VSC7965 la ser driver da ta m odu lati on and bi as c on t ro l and mon t or ing da tan out outn 5 15 bs rc = v cc v cc i mod i mod be n 15 be nn_tx_dis v cc 15 5 bsnk aout 10 k md tx_fault i bias bs nk n i md 10 k v cc limi tin g am pl ifier lin s1 lo ut 50 lo utn s5 d cr st2 p ea k detector an d c on trol 50 lo s 100 s2 s4 s3 dcrst1 rpk_stage d cr st[1:0] dcr st[1:0] la_ sq mon lo smon out pu t c on t ro l la_ s qs rc la_ sqfo rc e 7 k v cc general description: block diagrams: pon integrated burst-mode laser driver and limiting amplifier the VSC7965 is a multirate 1.25 gbps integrated laser driver an d l imiting amplifier for passive optical network applications optimized to reduce module cost. the device is in tended to dr ive distributed feedback (dfb) and fabry perot (fp) lasers. a st andard spi port is provided for programming integrated digital-to-analog co nverters for laser bias current, modulation current, average po wer, an d t he limiting amplifier lo ss of si gnal threshold. the VSC7965 is equipped with sfp-compliant fault indicators, re dundant disable control, automatic power control, temperature sensor, various signal monitors, and robust eye safety features. the VSC7965 is available in a 5mm x 5mm 32-pin qfn plastic package.
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