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description the 820 nm miniature link series of components is designed to provide cost-efective, high performance fber optic communication links for information systems and industrial applications with link distances of several kilometers. with the hfbr-24x6z, the 125 mhz analog receiver, data rates of up to 160 mbd can be attained. transmitters and receivers are directly compatible with popular industry-standard connectors: st?, sma, sc and fc. they are completely specifed with multiple fber sizes; including 50/125 m, 62.5/125 m, 100/140 m, and 200 m. products are available in various options. for example, transmitters with the improved protection option p show an increased esd resistance to the pins. this hfbr-141xpxz integrated solution is realized by includ - ing a zener diode parallel to the led. 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 fber. evaluation kits are available for st products, including transmitter, receiver, eval board and technical literature. 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 several kilometers ? compatible with 50/125 m, 62.5/125 m, 100/140 m, and 200 m plastic-clad silica (pcs) fiber ? repeatable st connections within 0.2 db typical ? unique optical port design for efcient coupling ? pick and place, and wave solderable ? no board mounting hardware required ? wide operating temperature range -40 c to +85 c ? conductive port option applications ? 100base-sx fast ethernet on 850 nm ? media/fber conversion, switches, routers, hubs and nics on 100base-sx ? local area networks ? computer-to-peripheral links ? computer monitor links ? digital cross connect links ? central ofce switch/pbx links ? video links ? modems and multiplexers ? suitable for tempest systems ? industrial control links st? is a registered trademark of at&t. hfbr-14xxz and hfbr-24xxz series low-cost, 820 nm miniature link 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 62.5/125 hfbr-0410z 20 2700 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0416z 32 2200 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0416z 55 1400 hfbr-14x4z/14x5z hfbr-24x6z 62.5/125 hfbr-0416z 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 about specifc links, see the individual link descriptions. the hfbr-1415z can be used for increased power budget or for lower driving current for the same data-rates and link-distances. part number guide hfbr-x4xx aa z rohs compliant 2 t x , s t anda r d p o w e r 4 t x , h ig h p o w e r 2 rx , 5 m b d , t t l o u t p u t 5 t x , h ig h lig h t o u t p u t p o w e r 6 rx , 1 2 5 m h z , a n a lo g ou t p u t 1 t r a n s m it t e r 2 re c e iv e r 0 sm a , h o u s e d 1 st , h o u s e d 2 f c, h o u s e d e sc, h o u s e d 4 8 2 0 n m t r a n s m it t e r a n d re c e iv e r p r o d u c t s t t h r e a d e d p o r t o p t io n c co n d u c t iv e p o r t r e c e iv e r o p t io n m m e t a l p o r t o p t io n p protection improved o p t io n available options hfbr-1402z hfbr-1404z hfbr-1412ptz hfbr-1412pz hfbr-1412tmz hfbr-1412tz hfbr-1412z hfbr-1414ptz hfbr-1414pz 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 note: for better readability of the electrical and optical specifcations, all available options (p, t, c and m) are covered by the hfbr-x4xxz product name; exceptions are explicitly noted.
3 options in addition to the various port styles available for the hfbr- 0400z series products, there are also several extra op - tions 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 p (protection improved option) ? designed to withstand electrostatic discharge (esd) of 2 kv (hbm) to the pins ? available on tx with non-conductive st and non-conductive threaded st ports option t (threaded port option) ? allows st style port components to be panel mounted ? 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 washers 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 optical port ? signifcantly reduces efect of electromagnetic interference (emi) on receiver sensitivity ? allows designer to separate the signal and conductive port grounds ? recommended for use in noisy environments ? available on threaded st port style receivers only ? the conductive port is connected to pins 1, 4, 5 and 8 through the port grounding path insert option m (metal port option) ? nickel plated aluminum connector receptacle ? designed to withstand electrostatic discharge (esd) of 15 kv to the optical port ? signifcantly reduces efect of electromagnetic interference (emi) on receiver sensitivity ? allows designer to separate the signal and metal port grounds ? recommended for use in very noisy environments ? available on st and threaded st ports ? the metal port is connected to pins 1, 4, 5 and 8 through the port grounding path insert
4 application literature title description application note 1065 complete solutions for ieee 802.5j fiberoptic token ring 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 applications support guide this section gives the designer information necessary to use the 820 nm miniature link series components to make a functional optical transmission link. avago ofers evaluation kits for hands-on experience with fber optic products as well as a wide range of application notes complete with circuit diagrams and board layouts. furthermore, avagos application support group is always ready to assist with any design consideration. evaluation kits avago ofers fber optic kits that facilitate a simple means to evaluate and experience our products. these fber op - tic kits contain all the components and tools required for customers to quickly evaluate and access the value of our products within their respective applications. hfbr-0410z st evaluation kit dc to 5 mbd 820 nm fiber optic eval kit contains the following: ? one hfbr-1412z transmitter ? one hfbr-2412z receiver ? eval board ? related literature hfbr-0416z evaluation kit 125 mbd 820 nm fiber optic eval kit contains the following: ? one hfbr-1414z transmitter ? one hfbr-2416z receiver ? eval board ? related literature
5 recommended chemicals for cleaning/degreasing 820 nm miniature link 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, phe - nol, methylene chloride, or n-methylpyrolldone. also, avago does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm. package and handling information package information all transmitters and receivers of the 820 nm miniature link series are housed in a low-cost, dual-inline package that is made of high strength, heat resistant, chemically resistant, and ul 94v-o fame retardant plastic (ul file #e121562). the transmitters are easily identifed by the light grey color connector port. the receivers are easily identifed by the dark grey color connector port. (black color for conductive port). the package is designed for pick and place 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. note: this plastic or rubber port cap is made to protect the optical path during assembly. it is not meant to remain on the part for a long period. 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 sufcient to remove par - ticles of dirt; methanol on a cotton swab also works well.
6 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) 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) 4.9 (0.193) max. pins 1,4,5,8 0.51 x 0.38 (0.020 x 0.015) pins 2,3,6,7 ? 0.46 (0.018) mechanical dimensions - sma port hfbr-x40xz mechanical dimensions - st port hfbr-x41xz dimensions in mm (inches) dimensions in mm (inches)
7 mechanical dimensions - threaded st port hfbr-x41xtz dimensions in mm (inches) dimensions in mm (inches) mechanical dimensions - metal st port hfbr-x41xmz pin no. 1 indicator pins 1,4,5,8 0.51 0.38 (0.020 0.015) pins 2,3,6,7 0.46 dia. (0.018) dia. 4.9 (0.193) 8.4 (0.33) 6.35 (0.25) 5.1 (0.20) 10.2 (0.40) 3.6 (0.14) 1.27 (0.05) 2.54 (0.10) 12.7 (0.50) 27.2 (1.07) 12.7 (0.50) 2.54 (0.10) 3.81 (0.15) dia. 7.0 (0.28) 8 1 3 5 2 4 6 7 max. rx/tx country of origin a yyww hfbr-x41xmz 5.1 (0.20) 3/8 - 32 unef - 2a 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 0.38 (0.020 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) 4.9 (0.193) max. rx/tx country of origin a yyww hfbr-x41xtz
8 mechanical dimensions - sc port hfbr-x4exz dimensions in mm (inches) m8 x 0.75 6g thread (metric) rx/tx country of origin a yyww hfbr-x42xz 2.54 (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) 2.54 (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) mechanical dimensions - fc port hfbr-x42xz dimensions in mm (inches) 28.65 (1.128) 15.95 (0.628) 10.0 (0.394) 12.7 (0.50) 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 (0.20) 10.38 (0.409) 3.60 (0.14) 1.27 (0.05) 2.54 (0.10) pins 1,4,5,8 0.51 0.38 (0.020 0.015) pins 2,3,6,7 ? 0.46 (0.018) 8 1 3 5 2 4 6 7 pin no. 1 indicator
9 port cap hardware hfbr-4402z: 500 sma port caps hfbr-4120z: 500 st port plugs panel mount hardware dimensions in mm (inches) cross-sectional view figure 1. hfbr-x41xtz st series cross-sectional view housing connector port header epoxy backfill port grounding path insert led or detector ic lens?sphere (on transmitters only) lens?window (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
10 typical link data the following technical data is taken from 5mbd and 155mbd link using the 820nm miniature link series. this data is meant to be regarded as an example of typical link performance for a given design and does not call out any link limitations. 5 mbd link (hfbr-14xxz/24x2z) link performance -40 c to +85 c unless otherwise specifed parameter symbol min. typ. max. units conditions reference optical power budget with 50/125 m fber opb 50 4.2 9.6 db hfbr-14x4z/24x2z na = 0.2 note 1 optical power budget with 62.5/125 m fber opb 62.5 8.0 15 db hfbr-14x4z/24x2z na = 0.27 note 1 optical power budget with 100/140 m fber opb 100 8.0 15 db hfbr-14x2z/24x2z na = 0.30 note 1 optical power budget with 200 m fber opb 200 13.0 20 db hfbr-14x2z/24x2z na = 0.37 note 1 data rate dc 5 mbd note 2 propagation delay low to high t plh 72 ns t a = +25 c p r = -21 dbm peak fiber cable length = 1 m figures 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 mbd p r > -24 dbm peak notes: 1. optical power board at t a = -40 to +85 c, v cc = 5.0 v dc, i f on = 60 ma. p r = -24 dbm peak. 2. data rate limit is based on these assumptions: a. 50% duty factor modulation, e.g., manchester i or biphase manchester ii b. continuous data c. pll phase lock loop demodulation d. ttl threshold.
11 5 mbd logic link design the resistor r1 is the only signifcant element in the drive circuit (see figure 2) that limits the current through the led, apart from the gates output port. depending on the actual gate used, the voltage drop on the output port v port could be neglected. the forward voltage val - ue, v f , of the led depends on the desired led current and on the temperature (see figure 9). make sure you take this behavior into account for the calculations. the curves in figure 3, figure 4, and figure 5 are con - structed assuming no inline splice or any additional system loss. besides fber attenuation, for correct power budget calculation, make sure you take into account the efect of bending, humidity, ambient temperature, aging and other relevant infuences. all these additional losses reduce the achievable link distance accordingly. for calculating the leds aging efect, an additional loss of about 1.5 db is recognized. the following example will illustrate the technique for selecting the appropriate value of i f and r1: figure 2. typical circuit confguration the following diagrams (figure 3 to figure 5) serve as an aid in link design and are based on theoretical calcula - tions. for broad use, no additional efects such as aging were taken into account. the additional losses and the individual safety bufer values should be added sepa - rately. these diagrams refect the pure viewing of power budget and do not allows conclusions about the actual link quality. overdrive: maximum optical output power of tx com - bined with receiver sensitivity of -10 dbm over the entire temperature range. typical 25 c: typical optical output power of tx com - bined with receiver sensitivity of -25.4 dbm at t a = 25 c. worst case: minimum optical output power of tx com - bined with receiver sensitivity of -24 dbm over the entire temperature range. maximum distance required = 2000 meters by using hfbr-14x4z/24x2z logic link with 62.5/125 m fber. figure 4 shows the worst-case drive current of about 43 ma for reaching a distance of about 2000 meters. figure 9 shows the transmitter forward voltage of about v f = 1.62 v. if the typical circuit confguration (figure 2) is used at v cc = 5.0 v, the resistor value r1 should be choosen to 78.6 ? (3.38 v/43 ma) for reaching driver current of about 43 ma. page 16 shows the guaranteed hfbr-14x4zs optical output power limit of -16.0 dbm (for driver current of 60 ma) over the entire temperature range. figure 10 shows the normalized typical output power. when the transmitter will be driven with 43 ma the opti - cal output power is about 0.70 or -1.55 db lower than at 60 ma. with an assumed fber attenuation of 3.2 db/km and the reduced driver current of 43 ma, the minimum optical output power at fber end is about -24 dbm, which is equal to the receiver sensitivity over the entire tempera - ture range. for balancing the individual additional system losses, the driver current must be increased accordingly. - = i v v r f f cc 1 + 5 v s el ec t r 1 to s e t i f r 1 i f 1 k data i n ? 754 51 2 6 7 3 t hf br - 1 4x xz tra n s m i t t e r tr a n s m i s s i o n di s t an c e = hf br - 2 4x 2z rec e i v er r ttl dat a o u t 2 6 7 & 3 r l v cc 0. 1 f note: a bypass capacitor (0.01 f to 0.1 f ceramic) must 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.
12 55 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 p r ? receiver power ? dbm t d ? nrz distortion ? ns 50 45 40 35 30 25 20 75 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 p r ? receiver power ? dbm t plh or t phl - propogation delay ?ns 70 65 60 55 50 45 40 35 30 25 20 t plh (typ) @ 25c t phl (typ) @ 25c 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 0 1 2 3 4 t y p i c a l t r a n s mi t t e r c u r r e n t (ma ) f i b e r l e n g t h (k m) ( fi b e r at t e n u a t i o n : 3.2 d b / k m ) overdrive worst case t y p i c a l, 25 c 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 0 1 2 3 4 t y p i c a l t r a n s mi t t e r c u r r e n t (ma ) f i b e r l e n g t h (k m) ( fi b e r at t e n u a t i o n : 2.7 d b / k m ) w o r s t c a s e t y p i c a l, 25 c 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 0 1 2 3 4 t y p i c a l t r a n s mi t t e r c u r r e n t (ma ) f i b e r l e n g t h (k m) ( fi b e r at t e n u a t i o n : 4 d b / k m ) o v e r dr i v e w o r s t c a s e t y p i c a l, 25 c figure 5. typical hfbr-14x4xz/hfbr-24x2xz link with 50/125 p m fiber figure 6. typical propagation delay times of link (hfbr-14x4z/hfbr-24x2z) measured at t a =25c, 5 mbd and with 1 m of cable figure 4. typical hfbr-14x4xz/hfbr-24x2xz link with 62.5/125 p m fiber figure 3. typical hfbr-14x4xz/hfbr-24x2xz link with 100/140 p m fiber figure 7. typical pulse width distortion of link (hfbr-14x4z/hfbr-24x2z) measured at t a =25 c, 5 mbd and with 1 m of cable
13 figure 8. system propagation delay test circuit and waveform timing defnitions pulse gen ? 75451 1n4150 +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 r s 155 mbd link (hfbr-14x4z/24x6z) typical link performance parameter symbol min. typ. [1, 2] max. units conditions reference optical power budget with 50/125 m fber opb 50 13.9 db na = 0.2 note 2 optical power budget with 62.5/125 m fber opb 62 17.7 db na = 0.27 optical power budget with 100/140 m fber opb 100 17.7 db na = 0.30 optical power budget with 200 m pcs fber opb 200 22.0 db na = 0.35 data format 20% to 80% duty factor 20 160 mbd system pulse width distortion |t plh - t phl | 1 ns pr = -7 dbm peak 1 m 62.5/125 m fber bit error rate ber 10 -9 data rate < 100 mbd 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 fbers that have less optical loss.
14 hfbr-14x2z/14x4z/14x5z low-cost high-speed transmitters description the hfbr-14xxz fber optic transmitter contains an 820 nm algaas emitter capable of efciently launching opti - cal power into four diferent optical fber sizes: 50/125 m, 62.5/125 m, 100/140 m, and 200 m plastic-clad silica (pcs). this allows the designer fexibility in choos - ing the fber size. the hfbr-14xxz is designed to operate with the avago technologies hfbr-24xxz fber optic receivers. the hfbr-14xxz transmitters high coupling efciency 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 fber and typically can launch -15.8 dbm optical power at 60 ma into 50/125 m fber and -12 dbm into 62.5/125 m fber. the hfbr- 14x2z standard transmitter typically can launch -12 dbm of optical power at 60 ma into 100/140 m fber cable. it is ideal for large size fber such as 100/140 m. the high launched optical power level is useful for systems where star couplers, taps, or inline connectors create large fxed losses. for 820 nm miniature link transmitters with protection improved option p a zener diode parallel to the led was implemented. therefore, a higher esd capability could be attained. note: parameters reverse input voltage and diode ca - pacitance for hfbr-141xpxz transmitters deviate from the non p-parts. housed product 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 vbr 1.8 0.3 v v note 3 esd (human-body model) esd esd 1000 2000 v v note 2 note 2, 3 notes: 1. for i fpk > 100 ma, the time duration should not exceed 2 ns. 2. esd capability for all pins hbm (human body model) according jedec jesd22-a114. 3. only valid for hfbr-141xpxz (protection improved option). anode cathode 2, 6, 7 3 pi n 1 1 2 3 2 4 1 5 1 6 7 2 8 1 fu n c t i o n nc ano d e ca t h o d e nc nc ano d e ano d e 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. consistent coupling efciency is assured by the double- lens optical system (figure 1 on page 9). power coupled into any of the three fber types varies less than 5 db from part to part at a given drive current and temperature. consistent coupling efciency reduces receiver dynamic range requirements, which allows for longer link lengths.
15 electrical/optical specifcations -40 c to +85 c unless otherwise specifed. parameter symbol min. typ. [2] max. units conditions reference forward voltage v f 1.48 1.70 1.84 2.09 v i f = 60 ma dc i f = 100 ma dc figure 9 forward voltage temperature coefcient d v f / d t -0.22 -0.18 mv/k i f = 60 ma dc i f = 100 ma dc figure 9 reverse input voltage v br v br 1.8 0.3 3.8 0.7 v v i f = -100 a dc i f = -100 a dc note 10 peak emission wavelength l p 792 820 865 nm diode capacitance c t c t 55 70 pf pf v = 0, f = 1 mhz v = 0, f = 1 mhz note 10 optical power temperature coefcient d p t / d t -0.006 -0.010 db/k i = 60 ma dc i = 100 ma dc thermal resistance q ja 490 k/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 = 60 ma notes 5, 6, 9 figure 10 -22.8 -15.8 dbm peak t a = -40 c to +85 c, i f = 60 ma -20.3 -16.8 -14.4 dbm peak t a = +25 c, i f = 100 ma -21.9 -13.8 dbm peak t a = -40 c to +85 c, i f = 100 ma 62.5/125 m fiber cable p t62 -19.0 -16.0 -14.0 dbm peak t a = +25 c, i f = 60 ma -20.0 -13.0 dbm peak t a = -40 c to +85 c, i f = 60 ma -17.5 -14.0 -11.6 dbm peak t a = +25 c, i f = 100 ma -19.1 -11.0 dbm peak t a = -40 c to +85 c, i f = 100 ma 100/140 m fiber cable p t100 -15.0 -12.0 -10 dbm peak t a = +25 c, i f = 60 ma -16.0 -9.0 dbm peak t a = -40 c to +85 c, i f = 60 ma -13.5 -10.0 -7.6 dbm peak t a = +25 c, i f = 100 ma -15.1 -7.0 dbm peak t a = -40 c to +85 c, i f = 100 ma 200 m pcs fiber cable p t200 -10.0 -7.0 -5.0 dbm peak t a = +25 c, i f = 60 ma -11.0 -4.0 dbm peak t a = -40 c to +85 c, i f = 60 ma -8.5 -5.0 -2.6 dbm peak t a = +25 c, i f = 100 ma -10.1 -2.0 dbm peak t a = -40 c to +85 c, i f = 100 ma 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.
16 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 -15.8 -13.8 dbm peak t a = +25 c, i f = 60 ma notes 5, 6, 9 figure 10 -19.8 -12.8 dbm peak t a = -40 c to +85 c, i f = 60 ma -17.3 -13.8 -11.4 dbm peak t a = +25 c, i f = 100 ma -18.9 -10.8 dbm peak t a = -40 c to +85 c, i f = 100 ma 62.5/125 m fiber cable na = 0.275 p t62 -15.0 -12.0 -10.0 dbm peak t a = +25 c, i f = 60ma -16.0 -9.0 dbm peak t a = -40 c to +85 c, i f = 60 ma -13.5 -10.0 -7.6 dbm peak t a = +25 c, i f = 100 ma -15.1 -7.0 dbm peak t a = -40 c to +85 c, i f = 100 ma 100/140 m fiber cable na = 0.3 p t100 -11.5 -8.5 -6.5 dbm peak t a = +25 c, i f = 60 ma -12.5 -5.5 dbm peak t a = -40 c to +85 c, i f = 60 ma -10.0 -6.5 -4.1 dbm peak t a = +25 c, i f = 100 ma -11.6 -3.5 dbm peak t a = -40 c to +85 c, i f = 100 ma 200 m pcs fiber cable na = 0.37 p t200 -7.5 -4.5 -2.5 dbm peak t a = +25 c, i f = 60ma -8.5 -1.5 dbm peak t a = -40 c to +85 c, i f = 60 ma -6.0 -2.5 -0.1 dbm peak t a = +25 c, i f = 100 ma -7.6 0.5 dbm peak t a = -40 c to +85 c, i f = 100 ma hfbr-14x5z output power measured out of 1 meter of cable parameter symbol min. typ. max. units conditions reference 50/125 m fiber cable na = 0.2 p t50 -16.5 -14.3 -11.5 dbm peak t a = +25 c, i f = 60 ma notes 5, 6, 9 figure 10 -17.5 -10.5 dbm peak t a = -40 c to 85 c, i f = 60 ma 62.5/125 m fiber cable na = 0.275 p t62 -12.0 -10.5 -8.0 dbm peak t a = +25 c, i f = 60 ma -13.0 -7.0 dbm peak t a = -40 c to 85 c, i f = 60 ma 200 m fiber cable na = 0.37 p t200 -6.0 -3.6 0.0 dbm peak t a = +25 c, i f = 60 ma -7.0 1.0 dbm peak t a = -40 c to 85 c, i f = 60 ma 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 ns no pre-bias i f = 60 ma figure 11 note 7 rise time, fall time (10% to 90%) t r , t f 3.0 ns i f = 10 to 100 ma figure 12 pulse width distortion pwd 0.5 ns figure 12 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 fber face and defnes a diameter where the optical power density is within 10 db of the maximum. 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 (milstd- 83522/13) for hfbr-141xz, and with an sma 905 precision ceramic ferrule for hfbr-140xz. 6. when changing mw to dbm, the optical power is referenced to 1 mw. optical power p(dbm) = 10log (p(mw) / 1mw) 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 further 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 fber, using the far-feld pattern. na is defned as the sine of the half angle, determined at 5% of the peak intensity point. when using other manufacturers fber cable, results will vary due to difering na values and specifcation methods. 10. only valid for hfbr-141xpxz (protection improved option).
17 recommended drive circuits the circuit used to supply current to the led transmitter can signifcantly infuence 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 diferences 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. compo - nent values for this circuit can be calculated for diferent led drive currents using the equations shown as follows. all hfbr-14xxz led transmitters are classifed as iec 825-1 accessible emission limit (ael) class 1 based upon the current proposed draft scheduled to go in to efect 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 : 100 ma 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 = ? = ? = = = = ? = = ? = = ? = + = - - + - = ( ) (
18 figure 9. typical forward voltage and current characteristics figure 10. normalized typical transmitter output vs. forward current 10 20 30 40 50 60 70 80 90 100 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 forward current (ma) forward voltage (v) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 0 10 20 30 40 50 60 70 80 90 100 p(if) -p(60ma) - relative power ratio forward current (ma) p(if) - p(60ma) relative power ratio (db) 2.0 3.0 0 - 7.0 - 4.0 0.8 - 1.0 85 c 25 c - 40 c figure 11. recommended drive circuit figure 12. test circuit for measuring t r , t f agilent 81130a pulse/pattern genera tor hfbr-14x2z/ x4z/x5z + 5 v r y r x 1 c ? 7 4 f 3 0 3 7 7 8 5 r x 4 ? 7 4 f 303 7 r x 3 r x 2 ? 7 4 f 3 0 3 7 1 2 3 4 , 5 + 4 . 7 f 1 5 1 4 ? 7 4 f 303 7 1 6 12, 1 3 0 . 1 f 1 0 1 1 9 gnd out (50 ? terminated) o/e converter silicon pin photo diode sma measuring cable (50 ?) high speed oscilloscope (50 ? terminated)
19 hfbr-24x2z low-cost 5 mbd receiver description the hfbr-24x2z fber optic receiver is designed to oper - ate with the avago technologies hfbr-14xxz fber optic transmitter and 50/125 m, 62.5/125 m, 100/ 140 m, and 200 m plastic-clad silica (pcs) fber optic cable. consistent coupling into the receiver is assured by the lensed optical system (figure 1). response does not vary with fber size 0.100 m. the hfbr-24x2z receiver incorporates an integrated photo ic containing a photodetector and dc amplifer driving an open-collector 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 confgurations. the transmitter is designed to operate from a single +5 v supply. it is essential that a bypass capacitor (100 nf 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 notes: 1. 2.0 mm from where leads enter case. 2. 8 ma load (5 x 1.6 ma), rl = 560 ? . housed product v cc data common 2 6 7 & 3 45 6 7 8 3 2 1 pi n 1 1 2 3 2 4 1 5 1 6 7 2 8 1 fu n c t i on nc v cc (5 v ) c o mmo n nc nc da t a c o mmo n 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.
20 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 compo - nents to prevent damage and/or degradation which may be induced by esd. electrical/optical characteristics -40 c to + 85 c unless otherwise specifed 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 specifed; 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 peak w peak l p = 820 nm note 5 peak optical input power logic level low p rl -25.4 2.9 -9.2 120 dbm peak w peak t a = +25 c, i ol = 8 ma note 5 -24.0 4.0 -10.0 100 dbm peak w peak t a = -40 c to +85 c, i ol = 8 ma 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 v dc . 4. d is the efective diameter of the detector image on the plane of the fber face. the numerical value is the product of the actual detector di - ameter and the lens magnifcation. 5. measured at the end of 100/140 m fber optic cable with large area detector. 6. propagation delay through the system is the result of several sequentially-occurring phenomena. consequently it is a combination of data- rate-limiting efects and of transmission-time efects. because of this, the data-rate limit of the system must be described in terms of time diferentials between delays imposed on falling and rising edges. as the cable length is increased, the propagation delays increase at 5 ns per meter of length. data rate, as limited by pulse width distortion, is not afected by increasing cable length if the optical power level at the receiver is maintained.
21 hfbr-24x6z low-cost 125 mhz receiver description the hfbr-24x6z fber optic receiver is designed to oper - ate with the avago technologies hfbr-14xxz fber optic transmitters and 50/ 125 m, 62.5/125 m, 100/140 m and 200 m plastic-clad silica (pcs) fber optic cable. consistent coupling into the receiver is assured by the lensed optical system (figure 1). response does not vary with fber 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- of 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 preamplifer integrated circuit. the hfbr-24x6z receives an optical signal and converts it to an analog voltage. the output is a bufered emitter housed product figure 13. simplifed 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 compo - nents to prevent damage and/or degradation which may be induced by esd. 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 conduc - tive or metal port option is recommended. a receiver dynamic range of 23 db over temperature is achievable, assuming a bit error rate (ber) of 10 -9 . the frequency response is typically dc to 125 mhz. al - though the hfbr-24x6z is an analog receiver, it is com - patible with digital systems. the recommended ac coupled receiver circuit is shown in figure 14. a10 ? resistor must be connected between pin 6 and the power supply, and a 100 nf ceramic bypass capacitor must be connected between the power sup - ply and ground. in addition, pin 6 should be fltered to protect the receiver from noisy host systems. refer to an 1065 for details. v cc analog signal v ee 2 6 3 & 7 45 6 7 8 3 2 1 pi n 1 1 2 3 2 4 1 5 1 6 7 2 8 1 fu n c t i on nc si g n a l 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. bias & filter circuits v cc v out v ee 6 2 3, 7 positive supply analog signal negative supply 5.0 ma 300 pf
22 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 specifed. parameter symbol min. typ . [2] max. units conditions reference responsivity r p 5.3 7 9.6 mv/ w t a = +25 c @ 820 nm, 50 mhz note 3, 4 figure 18 4.5 11.5 mv/ w t a = -40 c to +85 c @ 820nm, 50mhz rms output noise voltage v no 0.40 0.59 mv bandwidth fltered @ 75 mhz p r = 0 w note 5 figure 15 0.70 mv unfltered bandwidth p r = 0 w equivalent input optical noise power (rms) pn -43.0 0.050 -41.4 0.065 dbm w bandwidth fltered @ 75 mhz optical input power (overdrive) p r -7.6 175 dbm peak w peak t a = +25 c note 6 figure 16 -8.2 150 dbm peak w peak t a = -40 c to +85 c output impedance z o 30 ? test frequency = 50 mhz dc output voltage v o dc v cc - 4.2 v cc - 3.1 v cc -2.4 v p r = 0 w power supply current i ee 9 15 ma 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 compo - nents to prevent damage and/or degradation which may be induced by esd.
23 dynamic characteristics -40 c to +85 c; 4.75 v supply voltage 5.25 v; r load = 511 ? , c load = 5 pf unless otherwise specifed 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 specifcations are for operation at t a = +25 c and v cc = +5 v dc. 3. for 200 m pcs fbers, typical responsivity will be 6 mv/mw. other parameters will change as well. 4. pin #2 should be ac coupled to a load 510 ? . load capacitance must be less than 5 pf. 5. measured with a 3 pole bessel flter with a 75 mhz, -3 db bandwidth. 6. overdrive is defned at pwd = 2.5 ns. 7. d is the efective diameter of the detector image on the plane of the fber face. the numerical value is the product of the actual detector di - ameter and the lens magnifcation. 8. measured with a 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform. 9. percent overshoot is defned as: 10. the conversion factor for the rise time to bandwidth is 0.41 since the hfbr-24x6z has a second order bandwidth limiting characteristic. 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 compo - nents to prevent damage and/or degradation which may be induced by esd. figure 14. recommended ac coupled receiver circuit 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
150 0 50 100 150 200 250 frequency ? mh z 125 100 75 50 25 0 300 spectral noise density ? nv/ h z 3.0 0 20 30 40 50 70 p r ? input optical power ? w 2.5 2.0 1.5 1.0 0.5 0 80 pwd ? pulse width distortion ? ns 10 60 6.0 -60 -40 -20 0 20 40 temperature ? c 5.0 4.0 3.0 2.0 1.0 60 t r , t f ? response time ? ns 80 100 t f t r 1.25 400 480 560 640 720 800 ? wavelength ? nm 1.00 0.75 0 880 normalized response 0.50 0.25 960 1040 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 ? 2005-2013 avago technologies. all rights reserved. obsoletes av01-0264en av02-0176en - june 26, 2013 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. typical receiver spectral response normalized to 820 nm

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