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description the hfbr-0400z series of components is designed to provide cost effective, high performance fiber optic com- munication links for information systems and industrial applications with link distances of up to 2.7 kilometers. with the hfbr-24x6z, the 125 mhz analog receiver, data rates of up to 160 megabaud are attainable. transmitters and receivers are directly compatible with popular industry-standard connectors: st?, sma, sc and fc. they are completely specified with multiple fiber sizes; including 50/125 m, 62.5/125 m, 100/140 m, and 200 m. the hfbr-14x4z high power transmitter and hfbr-24x6z 125 mhz receiver pair up to provide a duplex solution optimized for 100 base-sx. 100base-sx is a fast ethernet standard (100 mbps) at 850 nm on multimode fiber. complete evaluation kits are available for st product offerings; including transmitter, receiver, connectored cable, and technical literature. in addition, st connec- tored cables are available for evaluation. features rohs compliant meets ieee 802.3 ethernet and 802.5 token ring stan- dards meets tia/eia-785 100base-sx standard low cost transmitters and receivers choice of st?, sma, sc or fc ports 820 nm wavelength technology signal rates up to 160 mbd link distances up to 2.7 km compatible with 50/125 m, 62.5/125 m, 100/140 m, and 200 m hcs? fiber repeatable st connections within 0.2 db typical unique optical port design for efficient coupling auto-insertable and wave solderable no board mounting hardware required wide operating temperature range -40 c to +85 c algaas emitters 100% burn-in ensures high reliability conductive port option applications 100base-sx fast ethernet on 850 nm media/fiber conversion, switches, routers, hubs and nics on 100base-sx local area networks computer to peripheral links computer monitor links digital cross connect links central office switch/pbx links video links modems and multiplexers suitable for tempest systems industrial control links st? is a registered trademark of at&t. hcs? is a registered trademark of the ofs corporation. hfbr-0400z, hfbr-14xxz and hfbr-24xxz series low cost, miniature fiber optic components with st?, sma, sc and fc ports data sheet
2 link selection guide data rate (mbd) distance (m) transmitter receiver fiber size (m) evaluation kit 5 1500 hfbr-14x2z hfbr-24x2z 200 hcs n/a 5 2000 hfbr-14x4z/14x5z hfbr-24x2z 62.5/125 hfbr-0410z 20 2700 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0414z 32 2200 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0414z 55 1400 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0414z 125 700 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0416z 155 600 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0416z 160 500 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0416z for additional information on specific links see the following individual link descriptions. distances measured over temperature range from 0 to +70 c. the hfbr-1415z can be used for increased power budget or for lower driving current for the same data-rates and link-distances. hfbr-0400z series part number guide hfbr-x4xx aa z rohs compliant t threaded port option c conductive port receiver option mmetal port option 2tx, standard power 4 tx, high power 2 rx, 5 mbd, ttl output 5 tx, high light output power 6 rx, 125 mhz, analog output 1 transmitter 2 receiver 0 sma, housed 1 st, housed 2 fc, housed e sc, housed 4 820 nm transmitter and receiver products available options hfbr-1402z hfbr-1404z hfbr-1412tmz hfbr-1412tz hfbr-1412z hfbr-1414mz HFBR-1414TZ hfbr-1414z hfbr-1415tz hfbr-1415z hfbr-1424z hfbr-14e4z hfbr-2402z hfbr-2406z hfbr-2412tcz hfbr-2412tz hfbr-2412z hfbr-2416mz hfbr-2416tcz hfbr-2416tz hfbr-2416z hfbr-2422z hfbr-24e2z hfbr-24e6z
3 application literature title description hfbr-0400z series reliability data transmitter & receiver reliability data application bulletin 78 low cost fiber optic links for digital applications up to 155 mbd application note 1038 complete fiber solutions for ieee 802.3 foirl, 10base-fb and 10base-fl application note 1065 complete solutions for ieee 802.5j fiberoptic token ring application note 1073 hfbr-0219 test fixture for 1x9 fiber optic transceivers application note 1086 optical fiber interconnections in telecommunication products application note 1121 dc to 32 mbd fiberoptic solutions application note 1122 2 to 70 mbd fiberoptic solutions application note 1123 20 to 160 mbd fiberoptic solutions application note 1137 generic printed circuit layout rules application note 1383 cost effective fiber and media conversion for 100base-sx applications support guide this section gives the designer information necessary to use the hfbr-0400z series components to make a func- tional fiber optic transceiver. avago technologies offers a wide selection of evaluation kits for hands-on experience with fiber optic products as well as a wide range of application notes complete with circuit diagrams and board layouts. furthermore, avago technologies application support group is always ready to assist with any design consid- eration.
4 hfbr-0400z series evaluation kits hfbr-0410z st evaluation kit contains the following: one hfbr-1412z transmitter one hfbr-2412z five megabaud ttl receiver three meters of st connectored 62.5/125 m fiber optic cable with low cost plastic ferrules. related literature hfbr-0414z st evaluation kit includes additional components to interface to the trans- mitter and receiver as well as the pcb to reduce design time. contains the following: one HFBR-1414TZ transmitter one hfbr-2416tz receiver three meters of st connectored 62.5/125 m fiber optic cable printed circuit board ml-4622 cp data quantizer 74actllooon led driver lt1016cn8 comparator 4.7 h inductor related literature hfbr-0400z sma evaluation kit contains the following: one hfbr-1402z transmitter one hfbr-2402z five megabaud ttl receiver two meters of sma connectored 1000 m plastic opti- cal fiber related literature hfbr-0416z evaluation kit contains the following: one fully assembled 1x9 transceiver board for 155 mbd evaluation including: - hfbr-1414z transmitter - hfbr-2416z receiver - circuitry related literature ultem? is a registered trademark of the ge corporation. package and handling information package information all hfbr-0400z series transmitters and receivers are housed in a low-cost, dual-inline package that is made of high strength, heat resistant, chemically resistant, and ul 94v-o flame retardant ultem? plastic (ul file #e121562). the transmitters are easily identified by the light grey color connector port. the receivers are easily identified by the dark grey color connector port. (black color for conductive port). the package is designed for auto-insertion and wave soldering so it is ideal for high volume production applications. handling and design information each part comes with a protective port cap or plug cov- ering the optics. these caps/plugs will vary by port style. when soldering, it is advisable to leave the protective cap on the unit to keep the optics clean. good system performance requires clean port optics and cable ferrules to avoid obstructing the optical path. clean compressed air often is sufficient to remove parti- cles of dirt; methanol on a cotton swab also works well. recommended chemicals for cleaning/degreasing hfbr-0400z products alcohols: methyl, isopropyl, isobutyl. aliphatics: hexane, heptane, other: soap solution, naph- tha. do not use partially halogenated hydrocarbons such as 1,1.1 trichloroethane, ketones such as mek, acetone, chloroform, ethyl acetate, methylene dichloride, phenol, methylene chloride, or n-methylpyrolldone. also, avago technologies does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm.
5 6.35 (0.25) 2.54 (0.10) 3.81 (0.15) 6.4 (0.25) dia. 12.7 (0.50) 12.7 (0.50) 22.2 (0.87) 5.1 (0.20) 10.2 (0.40) 3.6 (0.14) 1.27 (0.05) 2.54 (0.10) pins 1,4,5,8 0.51 x 0.38 (0.020 x 0.015) pins 2,3,6,7 0.46 (0.018) dia. 8 1 3 5 2 4 6 7 pin no. 1 indicator 1/4 - 36 uns 2a thread rx/tx country of origin a yyww hfbr-x40xz 8.2 (0.32) rx/tx country of origin a yyww hfbr-x41xz 6.35 (0.25) 12.7 (0.50) 27.2 (1.07) 5.1 (0.20) 10.2 (0.40) 3.6 (0.14) 1.27 (0.05) 2.54 (0.10) pins 1,4,5,8 0.51 x 0.38 (0.020 x 0.015) pins 2,3,6,7 0.46 (0.018) dia. 8 1 3 5 2 4 6 7 pin no. 1 indicator 2.54 (0.10) 3.81 (0.15) dia. 12.7 (0.50) 7.0 (0.28) mechanical dimensions - sma port hfbr-x40xz mechanical dimensions - st port hfbr-x41xz
6 5.1 (0.20) 3/8 - 32 unef - 2a rx/tx country of origin a yyww hfbr-x41xtz 8.4 (0.33) 6.35 (0.25) 12.7 (0.50) 27.2 (1.07) 5.1 (0.20) 10.2 (0.40) 3.6 (0.14) 1.27 (0.05) 2.54 (0.10) pins 1,4,5,8 0.51 x 0.38 (0.020 x 0.015) pins 2,3,6,7 0.46 (0.018) dia. 8 1 3 5 2 4 6 7 pin no. 1 indicator 2.54 (0.10) 3.81 (0.15) dia. 12.7 (0.50) 7.1 (0.28) dia. 7.6 (0.30) m8 x 0.75 6g thread (metric) rx/tx country of origin a yyww hfbr-x42xz 2.5 (0.10) 3.81 (0.15) 7.9 (0.31) 12.7 (0.50) 12.7 (0.50) 5.1 (0.20) 10.2 (0.40) 3.6 (0.14) 8 1 3 5 2 4 6 7 pin no. 1 indicator 19.6 (0.77) 2.5 (0.10) mechanical dimensions - threaded st port hfbr-x41xtz mechanical dimensions - fc port hfbr-x42xz
7 28.65 (1.128) 15.95 (0.628) 10.0 (0.394) 12.7 (0.500) rx/tx country of origin a yyww hfbr-x4exz 12.7 (0.50) 2.54 (0.10) 3.81 (0.15) 6.35 (0.25) 5.1 (0.200) 10.38 (0.409) 3.60 (0.140) 1.27 (0.050) 2.54 (0.100) mechanical dimensions - sc port hfbr-x4exz
8 (each hfbr-4401z and hfbr-4411z kit consists of 100 nuts and 100 washers). 7.87 (0.310) 7.87 (0.310) dia. 1/4 - 36 unef - 2b thread 1.65 (0.065) typ. dia. 6.61 (0.260) dia. hex-nut washer 0.14 (0.005) 14.27 (0.563) 12.70 (0.50) dia. 3/8 - 32 unef - 2b thread 1.65 (0.065) typ. dia. 10.41 (0.410) max. dia. hex-nut washer 0.46 (0.018) 3/8 - 32 unef - 2a threading 0.2 in. wall washer nut 1 thread available date code part number rx/tx country of origin a yyww hfbr-x40xz hfbr-4401z: for sma ports hfbr-4411z: for st ports port cap hardware hfbr-4402z: 500 sma port caps hfbr-4120z: 500 st port plugs (120 psi) figure 1. hfbr-0400z st series cross-sectional view. panel mount hardware housing connector port header epoxy backfill port grounding path insert led or detector ic lensCsphere (on transmitters only) lensCwindow
9 options in addition to the various port styles available for the hfbr- 0400z series products, there are also several extra options that can be ordered. to order an option, simply place the corresponding option number at the end of the part number. see page 2 for available options. option t (threaded port option) allows st style port components to be panel mount- ed. compatible with all current makes of st? multimode connectors mechanical dimensions are compliant with mil-std- 83522/13 maximum wall thickness when using nuts and wash- ers from the hfbr-4411z hardware kit is 2.8 mm (0.11 inch) available on all st ports option c (conductive port receiver option) designed to withstand electrostatic discharge (esd) of 25 kv to the port significantly reduces effect of electromagnetic inter- ference (emi) on receiver sensitivity allows designer to separate the signal and conductive port grounds recommended for use in noisy environments available on sma and threaded st port style receivers only option m (metal port option) nickel plated aluminum connector receptacle designed to withstand electrostatic discharge (esd) of 15 kv to the port significantly reduces effect of electromagnetic inter- ference (emi) on receiver sensitivity allows designer to separate the signal and metal port grounds recommended for use in very noisy environments available on sma, st, and threaded st ports
10 typical link data hfbr-0400z series description the following technical data is taken from 4 popular links using the hfbr-0400z series: the 5 mbd link, ethernet 20 mbd link, token ring 32 mbd link, and the corresponds to transceiver solutions combining the hfbr-0400z se- ries components and various recommended transceiver design circuits using off-the-shelf electrical components. this data is meant to be regarded as an example of typi- cal link performance for a given design and does not call out any link limitations. please refer to the appropriate application note given for each link to obtain more in- formation. 5 mbd link (hfbr-14xxz/24x2z) link performance -40 c to +85 c unless otherwise specified parameter symbol min. typ. max. units conditions reference optical power budget with 50/125 m fiber opb 50 4.2 9.6 db hfbr-14x4z/24x2z na = 0.2 note 1 optical power budget with 62.5/125 m fiber opb 62.5 8.0 15 db hfbr-14x4z/24x2z na = 0.27 note 1 optical power budget with 100/140 m fiber opb 100 8.0 15 db hfbr-14x2z/24x2z na = 0.30 note 1 optical power budget with 200 m fiber opb 200 12 20 db hfbr-14x2z/24x2z na = 0.37 note 1 date rate synchronous dc 5 mbd note 2 asynchronous dc 2.5 mbd note 3, fig 7 propagation delay low to high t plh 72 ns t a = +25 c p r = -21 dbm peak fiber cable length = 1 m figs 6, 7, 8 propagation delay high to low t phl 46 ns system pulse width distortion t plh - t phl 26 ns bit error rate ber 10 -9 data rate <5 bd p r > -24 dbm peak notes: 1. opb at t a = -40 to +85 c, v cc = 5.0 v dc, if on = 60 ma. p r = -24 dbm peak. 2. synchronous data rate limit is based on these assumptions: a) 50% duty factor modulation, e.g., manchester i or biphase man chester ii; b) continuous data; c) pll phase lock loop demodulation; d) ttl threshold. 3. asynchronous data rate limit is based on these assumptions: a) nrz data; b) arbitrary timing-no duty factor restriction; c) ttl threshold.
11 5 mbd logic link design if resistor r1 in figure 2 is 70.4 , a forward current i f of 48 ma is applied to the hfbr-14x4z led transmitter. with i f = 48 ma the hfbr-14x4z/24x2z logic link is guaran- teed to work with 62.5/125 m fiber optic cable over the entire range of 0 to 1750 meters at a data rate of dc to 5 mbd, with arbitrary data format and pulse width distor- tion typically less than 25%. by setting r 1 = 115 , the transmitter can be driven with i f = 30 ma, if it is desired to economize on power or achieve lower pulse distortion. the following example will illustrate the technique for selecting the appropriate value of i f and r 1 . figure 2. typical circuit configuration. +5 v select r 1 to set i f r 1 i f 1 k data in ? 75451 2 6 7 3 t hfbr-14xxz transmitter transmission distance = hfbr-24x2z receiver r ttl data out 2 6 7 & 3 r l v cc 0.1 f note: it is essential that a bypass capacitor (0.01 f to 0.1 f ceramic) be connected from pin 2 to pin 7 of the receiver. total lead length between both ends of the capacitor and the pins should not exceed 20 mm. maximum distance required = 400 meters. from figure 3 the drive current should be 15 ma. from the transmitter data v f = 1.5 v (max.) at i f = 15 ma as shown in figure 9. the curves in figures 3, 4, and 5 are constructed assum- ing no inline splice or any additional system loss. should the link consists of any in-line splices, these curves can still be used to calculate link limits provided they are shifted by the additional system loss expressed in db. for example, figure 3 indicates that with 48 ma of transmit- ter drive current, a 1.75 km link distance is achievable with 62.5/125 m fiber which has a maximum attenua- tion of 4 db/km. with 2 db of additional system loss, a 1.25 km link distance is still achievable. = - = - = 233 r ma 15 i 1.5v 5v v v r 1 f f cc 1
12 0 log(i/io) normalized transmitter current (db) 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 i f transmitter forward current (ma) 60 50 40 30 20 10 6 4 2 0 link length ( km ) cable attenuation max (-40 c, +85 c) min (-40 c, +85 c) typ (+25 c) db/km 4 1.5 2.8 overdrive worst case -40 c, +85 c underdrive typical +25 c underdrive 0 log(i/io) normalized transmitter current (db) 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 i f transmitter forward current (ma) 60 50 40 30 20 10 6 4 2 0 link length (km) cable attenuation max (-40 c, +85 c) min (-40 c, +85 c) typ (+25 c) db/km 5.5 1.0 3.3 overdrive worst case -40 c, +85 c underdrive typical +25 c underdrive 13 75 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 p r C receiver power C dbm t plh or t phl propogation delay Cns 70 65 60 55 50 45 40 35 30 25 20 t plh (typ) @ 25c t phl (typ) @ 25c 55 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 p r C receiver power C dbm t d C nrz distortion C ns 50 45 40 35 30 25 20 figure 5. hfbr-14x4z/hfbr-24x2z link design limits with 50/125 m cable. figure 6. propagation delay through system with one meter of cable. figure 4. hfbr-14x2z/hfbr-24x2z link design limits with 100/140 m cable. figure 3. hfbr-1414z/hfbr-2412z link design limits with 62.5/125 m cable. figure 7. typical distortion of pseudo random data at 5 mb/s. 0 -1 -2 -3 -4 -5 -6 0 0.4 0.8 1.2 1.6 2 10 log (t/to) normalized transmitter current (db) link length (km) i f C transmitter forward current C (ma) 60 50 40 30 20 worst case -40c, +85c underdrive cable attenuation db/km max (-40c, +85c) 4 min (-40c, +85c) 1 typ (-40c, +85c) 2.8 typical 26c underdrive
13 figure 8. system propagation delay test circuit and waveform timing definitions. i f 10 w pulse gen ? 75451 1n4150 10 w +15 v r s 2, 6, 7 resistor value as needed for setting optical power output from receiver end of test cable 3 transmitter p t - from 1-meter test cable input (i f ) 2 6 7 & 3 + v o 15 pf r l +5 v 560 0.1 f output timing analysis equipment eg. scope hfbr-2412z receiver input i f p t v o 50% 50% t phl max 5 v 1.5 v 0 t phlt 100 ns t phl min pulse repetition freq = 1 mhz 100 ns t phlt t phl max t phl min ethernet 20 mbd link (hfbr-14x4z/24x6z) (refer to application note 1038 for details) typical link performance parameter symbol typ [1, 2] units conditions receiver sensitivity -34.4 dbm average 20 mbd d2d2 hexadecimal data 2 km 62.5/125 m fiber link jitter 7.56 7.03 ns pk-pk ns pk-pk ecl out receiver ttl out receiver transmitter jitter 0.763 ns pk-pk 20 mbd d2d2 hexadecimal data optical power p t -15.2 dbm average 20 mbd d2d2 hexadecimal data- peak i f,on = 60 ma led rise time t r 1.30 ns 1 mhz square wave input led fall time t f 3.08 ns mean difference |t r - t f | 1.77 ns bit error rate ber 10 -10 output eye opening 36.7 ns at aui receiver output data format 50% duty factor 20 mbd notes: 1. typical data at t a = +25 c, v cc = 5.0 v dc. 2. typical performance of circuits shown in figure 1 and figure 3 of an-1038 (see applications support section).
14 token ring 32 mbd link (hfbr-14x4z/24x6z) (refer to application note 1065 for details) typical link performance parameter symbol typ [1, 2] units conditions receiver sensitivity -34.1 dbm average 32 mbd d2d2 hexadecimal data 2 km 62.5/125 m fiber link jitter 6.91 5.52 ns pk-pk ns pk-pk ecl out receiver ttl out receiver transmitter jitter 0.823 ns pk-pk 32 mbd d2d2 hexadecimal data optical power logic level 0 p t on -12.2 dbm peak transmitter ttl in i f on = 60 ma, i f off = 1 ma optical power logic level 1 p t off -82.2 led rise time t r 1.3 ns 1 mhz square wave input led fall time t f 3.08 ns mean difference |t r - t f | 1.77 ns bit error rate ber 10 -10 data format 50% duty factor 32 mbd notes: 1. typical data at t a = +25 c, v cc = 5.0 v dc. 2. typical performance of circuits shown in figure 1 and figure 3 of an-1065 (see applications support section) 155 mbd link (hfbr-14x4z/24x6z) (refer to application bulletin 78 for details) typical link performance parameter symbol min typ [1, 2] max units conditions ref optical power budget with 50/125 m fiber opb 50 7.9 13.9 db na = 0.2 note 2 optical power budget with 62.5/125 m fiber opb 62 11.7 17.7 db na = 0.27 optical power budget with 100/140 m fiber opb 100 11.7 17.7 db na = 0.30 optical power budget with 200 m hcs fiber opb 200 16.0 22.0 db na = 0.35 data format 20% to 80% duty factor 1 175 mbd system pulse width distortion |t plh - t phl | 1 ns pr = -7 dbm peak1 m 62.5/125 m fiber bit error rate ber 10 -9 data rate < 100 mbaud pr > -31 dbm peak note 2 notes: 1. typical data at t a = +25 c, v cc = 5.0 v dc, pecl serial interface. 2. typical opb was determined at a probability of error (ber) of 10-9. lower probabilities of error can be achieved with short fibers that have less optical loss.
15 hfbr-14x2z/14x4z low-cost high-speed transmitters description the hfbr-14xxz fiber optic transmitter contains an 820 nm algaas emitter capable of efficiently launching opti- cal power into four different optical fiber sizes: 50/125 m, 62.5/125 m, 100/140 m, and 200 m hcs?. this allows the designer flexibility in choosing the fiber size. the hfbr-14xxz is designed to operate with the avago technologies hfbr-24xxz fiber optic receivers. the hfbr-14xxz transmitters high coupling efficiency allows the emitter to be driven at low current levels resulting in low power consumption and increased reli- ability of the transmitter. the hfbr-14x4z high power transmitter is optimized for small size fiber and typically can launch -15.8 dbm optical power at 60 ma into 50/125 m fiber and -12 dbm into 62.5/125 m fiber. the hfbr- 14x2z standard transmitter typically can launch -12 dbm of optical power at 60 ma into 100/140 m fiber cable. it is ideal for large size fiber such as 100/140 m. the high launched optical power level is useful for systems where star couplers, taps, or inline connectors create large fixed losses. consistent coupling efficiency is assured by the double- lens optical system (figure 1). power coupled into any of the three fiber types varies less than 5 db from part to part at a given drive current and temperature. consistent coupling efficiency reduces receiver dynamic range re- quirements which allows for longer link lengths. housed product regulatory compliance - targeted specifications feature test method performance electrostatic discharge (esd) mil-std-883 method 3015 class 1b (>500, <1000 v) - human body model absolute maximum ratings parameter symbol min max units reference storage temperature t s -55 +85 c operating temperature t a -40 +85 c lead soldering cycle temp time +260 10 c sec forward input current peak dc i fpk i fdc 200 100 ma ma note 1 reverse input voltage vbr 1.8 v anode cathode 2, 6, 7 3 pin 1 1 2 3 2 4 1 5 1 6 7 2 8 1 function nc anode cathode nc nc anode anode nc 4 3 2 1 5 6 7 8 pin 1 indicator bottom view notes: 1. pins 1, 4, 5 and 8 are electrically connected. 2. pins 2, 6 and 7 are electrically connected to the header.
16 electrical/optical specifications -40 c to +85 c unless otherwise specified. parameter symbol min typ 2 max units conditions reference forward voltage v f 1.48 1.70 1.84 2.09 v if = 60 ma dc if = 100 ma dc figure 9 forward voltage temperature coefficient v f / t -0.22 -0.18 mv/ c if = 60 ma dc if = 100 ma dc figure 9 reverse input voltage v br 1.8 3.8 v if = 100 a dc peak emission wavelength l p 792 820 865 nm diode capacitance c t 55 pf v = 0, f = 1 mhz optical power temperature coefficient p t / t -0.006 -0.010 db/ c i = 60 ma dc i = 100 ma dc thermal resistance ja 260 c/w notes 3, 8 14x2z numerical aperture na 0.49 14x4z numerical aperture na 0.31 14x2z optical port diameter d 290 m note 4 14x4z optical port diameter d 150 m note 4 hfbr-14x2z output power measured out of 1 meter of cable parameter symbol min typ max units conditions reference 50/125 m fiber cable p t50 -21.8 -18.8 -16.8 dbm peak t a = +25 c, i f = 60ma dc notes 5, 6, 9 -22.8 -15.8 -20.3 -16.8 -14.4 t a = +25 c, i f = 100ma dc -21.9 -13.8 62.5/125 m fiber cable p t62 -19.0 -16.0 -14.0 dbm peak t a = +25 c, i f = 60ma dc -20.0 -13.0 -17.5 -14.0 -11.6 t a = +25 c, i f = 100ma dc -19.1 -11.0 100/140 m fiber cable p t100 -15.0 -12.0 -10 dbm peak t a = +25 c, i f = 60ma dc -16.0 -9.0 -13.5 -10.0 -7.6 t a = +25 c, i f = 100ma dc -15.1 -7.0 200 m hcs fiber cable p t200 -10.0 -7.0 -5.0 dbm peak t a = +25 c, i f = 60ma dc -11.0 -4.0 -8.5 -5.0 -2.6 t a = +25 c, i f = 100ma dc -10.1 -2.0 caution: the small junction sizes inherent to the design of these components increase the components susceptibility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by esd.
17 hfbr-14x4z output power measured out of 1 meter of cable parameter symbol min typ 2 max units conditions reference 50/125 m fiber cable na = 0.2 p t50 -18.8 -19.8 -15.8 -13.8 -12.8 dbm peak t a = +25 c, i f = 60ma dc notes 5, 6, 9 -17.3 -18.9 -13.8 -11.4 -10.8 t a = +25 c, i f = 100 ma dc 62.5/125 m fiber cable na = 0.275 p t62 -15.0 -16.0 -12.0 -10.0 -9.0 dbm peak t a = +25 c, i f = 60ma dc -13.5 -15.1 -10.0 -7.6 -7.0 t a = +25 c, i f = 100 ma dc 100/140 m fiber cable na = 0.3 p t100 -11.5 -12.5 -8.5 -6.5 -5.5 dbm peak t a = +25 c, i f = 60ma dc -10.0 -11.6 -6.5 -4.1 -3.5 t a = +25 c, i f = 100 ma dc 200 m hcs fiber cable na = 0.37 p t200 -7.5 -8.5 -4.5 -2.5 -1.5 dbm peak t a = +25 c, i f = 60ma dc -6.0 -7.6 -2.5 -0.1 0.5 t a = +25 c, i f = 100 ma dc hfbr-14x5z output power measured out of 1 meter of cable parameter symbol min typ max units conditions 200m fiber cable na = 0.37 pt200 -6.0 -3.6 0.0 dbm peak t a = +25c, i f = 60ma -7.0 1.0 dbm peak t a = -40c to 85c, i f = 60ma 62.5/125m fiber cable na = 0.275 pt62 -12.0 -10.5 -8.0 dbm peak t a = +25c, i f = 60ma -13.0 -7.0 dbm peak t a = -40c to 85c, i f = 60ma 50/125m fiber cable na = 0.2 pt50 -16.5 -14.3 -11.5 dbm peak t a = +25c, i f = 60ma -17.5 -10.5 dbm peak t a = -40c to 85c, i f = 60ma 14x2z/14x4z/14x5z dynamic characteristics parameter symbol min typ 2 max units conditions reference rise time, fall time (10% to 90%) t r , t f 4.0 6.5 nsec no pre-bias i f = 60 ma figure 12 note 7 rise time, fall time (10% to 90%) t r , t f 3.0 nsec i f = 10 to 100 ma note 7, figure 11 pulse width distortion pwd 0.5 nsec figure 11 notes: 1. for i fpk > 100 ma, the time duration should not exceed 2 ns. 2. typical data at t a = +25 c. 3. thermal resistance is measured with the transmitter coupled to a connector assembly and mounted on a printed circuit board. 4. d is measured at the plane of the fiber face and defines a diameter where the optical power density is within 10 db of the ma ximum. 5. p t is measured with a large area detector at the end of 1 meter of mode stripped cable, with an st? precision ceramic ferrule (mil std- 83522/13) for hfbr-1412z/1414z, and with an sma 905 precision ceramic ferrule for hfbr-1402z/1404z. 6. when changing mw to dbm, the optical power is referenced to 1 mw (1000 mw). optical power p (dbm) = 10 log p (mw)/1000 mw. 7. pre-bias is recommended if signal rate >10 mbd, see recommended drive circuit in figure 11. 8. pins 2, 6 and 7 are welded to the anode header connection to minimize the thermal resistance from junction to ambient. to f urther reduce the thermal resistance, the anode trace should be made as large as is consistent with good rf circuit design. 9. fiber na is measured at the end of 2 meters of mode stripped fiber, using the far-field pattern. na is defined as the sine of the half angle, determined at 5% of the peak intensity point. when using other manufacturers fiber cable, results will vary due to differing na values and specification methods.
18 recommended drive circuits the circuit used to supply current to the led transmitter can significantly influence the optical switching charac- teristics of the led. the optical rise/fall times and propa- gation delays can be improved by using the appropriate circuit techniques. the led drive circuit shown in figure 11 uses frequency compensation to reduce the typical rise/fall times of the led and a small pre-bias voltage to minimize propagation delay differences that cause pulse- width distortion. the circuit will typically produce rise/fall times of 3 ns, and a total jitter including pulse-width dis- tortion of less than 1 ns. this circuit is recommended for applications requiring low edge jitter or high-speed data transmission at signal rates of up to 155 mbd. component values for this circuit can be calculated for different led drive currents using the equations shown below. for additional details about led drive circuits, the reader is encouraged to read avago technologies application bul- letin 78 and application note 1038. all hfbr-14xxz led transmitters are classified as iec 825-1 accessible emission limit (ael) class 1 based upon the current proposed draft scheduled to go in to effect on january 1, 1997. ael class 1 led devices are considered eye safe. contact your avago technologies sales representative for more information. caution: the small junction sizes inherent to the design of these components increase the components susceptibility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of these components to prevent damage and/or degradation which may be induced by esd. . v) 1.84 ( 9 figure from obtained be can v : 100ma i for example ) ( r ps 2000 c(pf) ) 3(r r r r 1 r ) ( r 3.97 r 2 1 r (a) i 1.6v) v 3.97(v ) v (v r f on f x1 eq2 x3 x2 x1 eq2 y x1 on f f cc f cc y x4 = = = = = = - = ) = - - + - pf 169 11.8 ps 2000 c 32.4 (10.8) 3 r r r 10.8 1 - 11.8 r 11.8 3.97 93.5 2 1 r 93.5 0.100 6.19 3.16 r 0.100 1.6) 1.84 3.97(5 1.84) (5 r x4 x3 x2 eq2 x1 y y = = = = = = = = = = = + = - - + - = ( ) (
19 figure 11. recommended drive circuit. p(i f ) C p(60 ma) C relative power ratio 0 2.0 0.8 0 i f C forward current C ma 20 40 80 1.6 0.4 1.2 60 100 1.8 1.4 1.0 0.6 0.2 10 30 50 70 90 p(i f ) C p(60 ma) C relative power ratio C db -7.0 -5.0 -4.0 -3.0 -2.0 -1.0 0 0.8 1.0 1.4 2.0 3.0 hp8082a pulse generator silicon avalanche photodiode 50 test head high speed oscilloscope 50 load resistor 100 80 60 40 20 10 1.2 1.4 1.6 1.8 2.0 2.2 v i - forward voltage - v i f - forward current - ma +85 c +25 c -40 c hfbr-14x2z/x4z +5 v r y r x1 c ? 74f3037 7 8 5 r x4 ? 74f3037 r x3 r x2 ? 74f3037 1 2 3 4, 5 + 4.7 f 15 14 ? 74f3037 16 12, 13 0.1 f 10 11 9 figure 9. forward voltage and current characteristics. figure 10. normalized transmitter output vs. forward current. figure 12. test circuit for measuring t r , t f .
20 hfbr-24x2z low-cost 5 mbd receiver description the hfbr-24x2z fiber optic receiver is designed to oper- ate with the avago technologies hfbr-14xxz fiber optic transmitter and 50/125 m, 62.5/125 m, 100/ 140 m, and 200 m hcs? fiber optic cable. consistent coupling into the receiver is assured by the lensed optical system (figure 1). response does not vary with fiber size 0.100 m. the hfbr-24x2z receiver incorporates an integrated photo ic containing a photodetector and dc amplifier driving an opencollector schottky output transistor. the hfbr-24x2z is designed for direct interfacing to popular logic families. the absence of an internal pull-up resistor allows the open-collector output to be used with logic families such as cmos requiring voltage excursions much higher than v cc . both the open-collector data output pin 6 and v cc pin 2 are referenced to com pin 3, 7. the data output allows busing, strobing and wired or circuit configurations. the transmitter is designed to operate from a single +5 v supply. it is essential that a bypass capacitor (0.1 mf ceramic) be connected from pin 2 (v cc ) to pin 3 (circuit common) of the receiver. absolute maximum ratings parameter symbol min max units reference storage temperature t s -55 +85 c operating temperature t a -40 +85 c lead soldering cycle temp time +260 10 c sec note 1 supply voltage v cc -0.5 7.0 v output current i o 25 ma output voltage v o -0.5 18.0 v output collector power dissipation p o av 40 mw fan out (ttl) n 5 note 2 housed product v cc data common 2 6 7 & 3 45 6 7 8 3 2 1 pin 1 1 2 3 2 4 1 5 1 6 7 2 8 1 function nc v cc (5 v) common nc nc data common nc pin 1 indicator bottom view notes: 1. pins 1, 4, 5 and 8 are electrically connected. 2. pins 3 and 7 are electrically connected to the header.
21 caution: the small junction sizes inherent to the design of these components increase the components susceptibility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of these com po- nents to prevent damage and/or degradation which may be induced by esd. electrical/optical characteristics -40 c to + 85 c unless otherwise specified fiber sizes with core diameter 100 m and na 0.35, 4.75 v v cc 5.25 v parameter symbol min typ 3 max units conditions reference high level output current i oh 5 250 a v o = 18 p r < -40 dbm low level output voltage v ol 0.4 0.5 v i o = 8 m p r > -24 dbm high level supply current i cch 3.5 6.3 ma v cc = 5.25 v p r < -40 dbm low level supply current i ccl 6.2 10 ma v cc = 5.25 v p r > -24 dbm equivalent na na 0.50 optical port diameter d 400 m note 4 dynamic characteristics -40 c to +85 c unless otherwise specified; 4.75 v v cc 5.25 v; ber 10 -9 parameter symbol min typ 3 max units conditions reference peak optical input power logic level high p rh -40 0.1 dbm pk w pk p = 820 nm note 5 peak optical input power logic level low p rl -25.4 2.9 -24.0 4.0 -9.2 120 -10.0 100 dbm pk w pk dbm pk w pk t a = +25 c, i ol = 8ma i ol = 8ma note 5 propagation delay low to high t plhr 65 ns t a = +25 c, p r = -21 dbm, data rate =5 mbd note 6 propagation delay high to low t phlr 49 ns notes: 1. 2.0 mm from where leads enter case. 2. 8 ma load (5 x 1.6 ma), rl = 560 . 3. typical data at t a = +25 c, v cc = 5.0 vdc. 4. d is the effective diameter of the detector image on the plane of the fiber face. the numerical value is the product of the a ctual detector di- ameter and the lens magnification. 5. measured at the end of 100/140 m fiber optic cable with large area detector. 6. propagation delay through the system is the result of sev eral sequentially-occurring phenomena. consequently it is a combin ation of data- rate-limiting effects and of transmission-time effects. because of this, the data-rate limit of the system must be described in t erms of time differentials between delays imposed on falling and rising edges. 7. as the cable length is increased, the propagation delays increase at 5 ns per meter of length. data rate, as limited by pul se width distortion, is not affected by increasing cable length if the optical power level at the receiver is maintained.
22 hfbr-24x6z low-cost 125 mhz receiver description the hfbr-24x6z fiber optic receiver is designed to oper- ate with the avago technologies hfbr-14xxz fiber optic transmitters and 50/ 125 m, 62.5/125 m, 100/140 m and 200 m hcs? fiber optic cable. consistent coupling into the receiver is assured by the lensed optical system (figure 1). response does not vary with fiber size for core diameters of 100 m or less. the receiver output is an analog signal which allows follow-on circuitry to be optimized for a variety of dis- tance/data rate requirements. low-cost external compo- nents can be used to convert the analog output to logic compatible signal levels for various data formats and data rates up to 175 mbd. this distance/data rate trade- off results in increased optical power budget at lower data rates which can be used for additional distance or splices. the hfbr-24x6z receiver contains a pin photodiode and low noise transimpedance preamplifier integrated circuit. the hfbr-24x6z receives an optical signal and converts it to an analog voltage. the output is a buffered housed product figure 13. simplified schematic diagram. caution: the small junction sizes inherent to the design of these components increase the components susceptibility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of these com po- nents to prevent damage and/or degradation which may be induced by esd. emitter follower. because the signal amplitude from the hfbr-24x6z receiver is much larger than from a simple pin photodiode, it is less susceptible to emi, especially at high signaling rates. for very noisy environments, the conductive or metal port option is recommended. a receiver dynamic range of 23 db over temperature is achievable (assuming 10-9 ber). the frequency response is typically dc to 125 mhz. although the hfbr-24x6z is an analog receiver, it is compatible with digital systems. please refer to applica- tion bulletin 78 for simple and inexpensive circuits that operate at 155 mbd or higher. the recommended ac coupled receiver circuit is shown in figure 14. it is essential that a 10 ohm resistor be con- nected between pin 6 and the power supply, and a 0.1 mf ceramic bypass capacitor be connected between the power supply and ground. in addition, pin 6 should be filtered to protect the receiver from noisy host systems. refer to an 1038, 1065, or ab 78 for details. bias & filter circuits v cc v out v ee 6 2 3, 7 positive supply analog signal negative supply 5.0 ma 300 pf v cc analog signal v ee 2 6 3 & 7 45 6 7 8 3 2 1 pin 1 1 2 3 2 4 1 5 1 6 7 2 8 1 function nc signal v ee nc nc v cc v ee nc pin 1 indicator bottom view notes: 1. pins 1, 4, 5 and 8 are isolated from the internal circuitry, but are connected to each other. 2. pins 3 and 7 are electrically connected to the header.
23 absolute maximum ratings parameter symbol min max units reference storage temperature t s -55 +85 c operating temperature t a -40 +85 c lead soldering cycle temp time +260 10 c sec note 1 supply voltage v cc -0.5 6.0 v output current i o 25 ma signal pin voltage v sig -0.5 v cc v electrical/optical characteristics -40 c to +85 c; 4.75 v supply voltage 5.25 v, r load = 511 , fiber sizes with core diameter 100 m, and n.a. 0.35 unless otherwise specified. parameter symbol min typ 2 max units conditions reference responsivity r p 5.3 4.5 7 9.6 11.5 mv/w mv/w t a = +25 c @ 820 nm, 50 mhz note 3, 4 figure 18 rms output noise voltage v no 0.40 0.59 0.70 mv mv bandwidth filtered @ 75 mhz p r = 0 w unfiltered bandwidth p r = 0 w note 5 figure 15 equivalent input optical noise power (rms) pn -43.0 0.050 -41.4 0.065 dbm w bandwidth filtered @ 75mhz optical input power (overdrive) p r -7.6 175 -8.2 150 dbm pk w pk dbm pk w pk t a = +25 c note 6 figure 16 output impedance z o 30 test frequency = 50 mhz dc output voltage v o dc -4.2 -3.1 -2.4 v p r = 0 w power supply current i ee 915ma r load = 510 equivalent na na 0.35 equivalent diameter d 324 m note 7 caution: the small junction sizes inherent to the design of these components increase the components susceptibility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of these com po- nents to prevent damage and/or degradation which may be induced by esd.
24 dynamic characteristics -40 c to +85 c; 4.75 v supply voltage 5.25 v; r load = 511 , c load = 5 pf unless otherwise specified parameter symbol min typ 2 max units conditions reference rise/fall time 10% to 90% t r , t f 3.3 6.3 ns p r = 100 w peak figure 17 pulse width distortion pwd 0.4 2.5 ns p r = 150 w peak note 8, figure 16 overshoot 2 % p r = 5 w peak, t r = 1.5 ns note 9 bandwidth (electrical) bw 125 mhz -3 db electrical bandwidth - rise time product 0.41 hz ? s note 10 notes: 1. 2.0 mm from where leads enter case. 2. typical specifications are for operation at t a = +25 c and v cc = +5 v dc. 3. for 200 m hcs fibers, typical responsivity will be 6 mv/mw. other parameters will change as well. 4. pin #2 should be ac coupled to a load 3 510 ohm. load capacitance must be less than 5 pf. 5. measured with a 3 pole bessel filter with a 75 mhz, -3 db bandwidth. recommended receiver filters for various bandwidths are provided in application bulletin 78. 6. overdrive is defined at pwd = 2.5 ns. 7. d is the effective diameter of the detector image on the plane of the fiber face. the numerical value is the product of the a ctual detector di- ameter and the lens magnification. 8. measured with a 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform. 9. percent overshoot is defined as: 10. the conversion factor for the rise time to bandwidth is 0.41 since the hfbr-24x6z has a second order bandwidth limiting ch aracteristic. caution: the small junction sizes inherent to the design of these components increase the components susceptibility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of these com po- nents to prevent damage and/or degradation which may be induced by esd. figure 14. recommended ac coupled receiver circuit. (see ab 78 and an 1038 for more information.) 100% x v v v 100% 100% pk ( ? ) 0.1 f logic output +5 v 10 30 pf r loads 500 min. 6 2 3 & 7 post amp
for product information and a complete list of distributors, please go to our web site: www.avagotech.com avago, avago technologies, and the a logo are trademarks of avago technologies in the united states and other countries. data subject to change. copyright ? 2005-2011 avago technologies. all rights reserved. obsoletes av01-0264en av02-0176en - march 23, 2011 150 0 50 100 150 200 250 frequency C mh z 125 100 75 50 25 0 300 spectral noise density C nv/ h z 3.0 02030405070 p r C input optical power C w 2.5 2.0 1.5 1.0 0.5 0 80 pwd C pulse width distortion C ns 10 60 6.0 -60 -40 -20 0 20 40 temperature C c 5.0 4.0 3.0 2.0 1.0 60 t r , t f C response time C ns 80 100 t f t r 1.25 400 480 560 640 720 800 C wavelength C nm 1.00 0.75 0 880 normalized response 0.50 0.25 960 1040 figure 15. typical spectral noise density vs. frequency. figure 16. typical pulse width distortion vs. peak input power. figure 17. typical rise and fall times vs. temperature. figure 18. receiver spectral response normalized to 820 nm.

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