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HFBR-0507Z series hfbr-15x7z transmitters hfbr-25x6z receivers 125 megabaud versatile link the versatile fiber optic connection data sheet features ? rohs-compliant ? data transmission at signal rates of 1 to 125 mbd over distances of 100 meters ? compatible with inexpen sive, easily terminated plas- tic optical fi ber, and with large core silica fi ber ? high voltage isolation ? transmitter and receiver application circuit sche matics and recommended board layouts avail- able ? interlocking feature for single channel or duplex links, in a vertical or horizontal mount confi guration applications ? intra-system links: board-to-board, rack-to-rack ? telecommunications switching systems ? computer-to-peripheral data links, pc bus extension ? industrial control ? proprietary lans ? digitized video ? medical instruments ? reduction of lightning and voltage transient suscepti- bility hcs ? is a registered trademark of spectran corporation. description the 125 mbd versatile link (HFBR-0507Z series) is the most cost-eff ective fi ber-optic solution for transmission of 125 mbd data over 100 meters. the data link consists of a 650 nm led transmitter, hfbr-15x7z, and a pin/pre- amp receiver, hfbr-25x6z. these can be used with low- cost plastic or silica fi ber. one mm diameter plastic fi ber provides the lowest cost solution for distances under 25 meters. the lower attenuation of silica fi ber allows data transmission over longer distance, for a small diff erence in cost. these com po nents can be used for high speed data links without the problems common with copper wire solutions, at a competitive cost. the hfbr-15x7z transmitter is a high power 650 nm led in a low cost plastic housing designed to effi ciently couple power into 1 mm diameter plastic optical fi ber and 200 m hard clad silica (hcs ? ) fi ber. with the recom- mended drive circuit, the led operates at speeds from 1-125 mbd. the hfbr-25x6z is a high band width analog receiver con tain ing a pin photodiode and internal tran- simpedance amplifi er. with the recommended applica- tion circuit for 125 mbd operation, the performance of the complete data link is specifi ed for of 0-25 meters with plastic fi ber and 0-100 meters with 200 m hcs ? fi ber. a wide variety of other digitizing circuits can be combined with the HFBR-0507Z series to optimize perfor-mance and cost at higher and lower data rates.
2 HFBR-0507Z series 125 mbd data link data link operating conditions and performance are specifi ed for the hfbr-15x7z transmitter and hfbr-25x6z receiver in the recommended applications circuits shown in figure 1. this circuit has been optimized for 125 mbd operation. the applications engineer ing department in the avago optical communication division is available to assist in optimizing link performance for higher or lower speed operation. recommended operating conditions for the circuits in figures 1 and 2. parameter symbol min. max. unit reference ambient temperature t a 0 70 c supply voltage v cc +4.75 +5.25 v data input voltage C low v il v cc -1.89 v cc -1.62 v data input voltage C high v ih v cc -1.06 v cc -0.70 v data output load r l 45 55 note 1 signaling rate f s 1 125 mbd duty cycle d.c. 40 60 % note 2 link performance: 1-125 mbd, ber 10 -9 , under recommended operating conditions with recommended transmit and receive application circuits. parameter symbol min. [3] typ. [4] max. unit condition reference optical power budget, 1 m pof opb pof 11 16 db note 5,6,7 optical power margin, opm pof,20 3 6 db note 5,6,7 20 m standard pof link distance with l 20 27 m standard 1 mm pof optical power margin, opm pof,25 3 6 db note 5,6,7 25 m low loss pof link distance with extra l 25 32 m low loss 1 mm pof optical power budget, 1 m hcs opb hcs 7 12 db note 5,6,7 optical power margin, opm hcs,100 3 6 db note 5,6,7 100 m hcs link distance with hcs cable l 100 125 m notes: 1. if the output of u4c in figure 1, page 4 is transmitted via coaxial cable, terminate with a 50 resistor to v cc - 2 v. 2. run length limited code with maximum run length of 10 s. 3. minimum link performance is projected based on the worst case specifi cations of the hfbr-15x7z transmitter, hfbr-25x6z receiver, and pof cable, and the typical performance of other components (e.g. logic gates, transistors, resistors, capacitors, quantizer , hcs cable). 4. typical performance is at 25c, 125 mbd, and is measured with typical values of all circuit components. 5. standard cable is hfbr-rxxyyyz plastic optical fi ber , with a maximum attenuation of 0.24 db/m at 650 nm and na = 0.5. extra low loss cable is hfbr-exxyyyz plastic optical fi ber, with a maximum attenuation of 0.19 db/m at 650 nm and na = 0.5. hcs cable is hfbr-h/vxxyyy glass optical fi ber, with a maximum attenuation of 10 db/km at 650 nm and na = 0.37. 6. optical power budget is the diff erence between the transmitter output power and the receiver sensitivity, measured after 1 meter of fi ber. the minimum opb is based on the limits of optical component performance over temperature, process, and recommended power sup ply variation. 7. the optical power margin is the available opb after including the eff ects of attenuation and modal dispersion for the minimum link distance: opm = opb - (attenuation power loss + modal dispersion power penalty). the minimum opm is the margin available for longterm l ed lop degradation and additional fi xed passive losses (such as in-line connectors) in addition to the minimum specifi ed distance.
3 hard clad silica fiber (200 m hcs) transmitter application circuit: performance of the hfbr-15x7z transmitter in the recom- mended application circuit (figure 1) for hcs; 1-125 mbd, 25c. parameter symbol typical unit condition note average optical power 200 m hcs p avg -14.6 dbm 50% duty note 1, fig 3 cycle average modulated power 200 m hcs p mod -16.2 dbm note 2, fig 3 optical rise time (10% to 90%) t r 3.1 ns 5 mhz optical fall time (90% to 10%) t f 3.4 ns 5 mhz high level led current (on) i f,h 60 ma note 3 low level led current (off ) i f,l 6 ma note 3 optical overshoot - 200 m hcs 30 % transmitter application circuit i cc 130 ma figure 1 current consumption - 200 m hcs notes: 1. average optical power is measured with an average power meter at 50% duty cycle, after 1 meter of fi ber. 2. to allow the led to switch at high speeds, the recommended drive circuit modulates led light output between two non-zero po wer levels. the modulated (useful) power is the diff erence between the high and low level of light output power (transmitted) or input power (received), which can be measured with an average power meter as a function of duty cycle (see figure 3). average modulated power is defi ned as one half the slope of the average power versus duty cycle: [p avg @ 80% duty cycle - p avg @ 20% duty cycle] average modulated power = (2) [0.80 - 0.20] 3. high and low level led currents refer to the current through the hfbr-15x7z led. the low level led off current, sometimes referred to as hold-on current, is prebias supplied to the led during the off state to facilitate fast switching speeds. plastic optical fiber (1 mm pof) transmitter application circuit: performance of the hfbr-15x7z transmitter in the recom- mended application circuit (figure 1) for pof; 1-125 mbd, 25c. parameter symbol typical unit condition note average optical power 1 mm pof p avg -9.7 dbm 50% duty note 1, fig 3 cycle average modulated power 1 mm pof p mod -11.3 dbm note 2, fig 3 optical rise time (10% to 90%) t r 2.1 ns 5 mhz optical fall time (90% to 10%) t f 2.8 ns 5 mhz high level led current (on) i f,h 19 ma note 3 low level led current (off ) i f,l 3 ma note 3 optical overshoot - 1 mm pof 45 % transmitter application circuit i cc 110 ma figure 1 current consumption - 1 mm pof
4 figure 1. transmitter and receiver application circuit with +5 v ecl inputs and outputs. plastic and hard clad silica optical fiber receiver application circuit: performance [4] of the hfbr-25x6z receiver in the recom- mended application circuit (figure 1); 1-125 mbd, 25c unless otherwise stated. parameter symbol typical unit condition note data output voltage - low v ol v cc -1.7 v r l = 50 note 5 data output voltage - high v oh v cc -0.9 v r l = 50 note 5 receiver sensitivity to average p min -27.5 dbm 50% eye opening note 2 modulated optical power 1 mm pof receiver sensitivity to average p min -28.5 dbm 50% eye opening note 2 modulated optical power 200 m hcs receiver overdrive level of average p max -7.5 dbm 50% eye opening note 2 modulated optical power 1 mm pof receiver overdrive level of average p max -10.5 dbm 50% eye opening note 2 modulated optical power 200 m hcs receiver application circuit current i cc 85 ma r l = figure 1 consumption notes: 4. performance in response to a signal from the hfbr-15x7z transmitter driven with the recommended circuit at 1-125 mbd over 1 meter of hfbr-rz/exxyyyz plastic optical fi ber or 1 meter of hfbr-h/vxxyyy hard clad silica optical fi ber. 5. terminated through a 50 resistor to v cc - 2 v. 6. if there is no input optical power to the receiver, electrical noise can result in false triggering of the receiver. in typ ical applications, data encod- ing and error detection prevent random triggering from being interp reted as valid data. refer to applications note 1066 for des ign guidelines. c1 0.001 c2 0.1 r5 22 q1 bfq52 r6 91 r7 91 q2 bfq52 c20 10 c19 0.1 t x v ee 9 8 7 6 5 4 3 2 1 j1 q2 base q1 base t x v cc r x v cc pin 19 10h116 pin 18 10h116 r x v ee nc l1 cb70-1812 1 2 3 4 5 13 12 10 9 14 7 8 11 6 1 2 3 4 8 5 8 5 1 2 3 4 12 13 5 7 8 9 3 4 17 15 19 18 r24 1k r22 1k r18 51 r16 51 c17 0.1 v bb v cc c10 0.1 r19 51 r17 51 r15 1k r23 1k v bb c18 0.1 r25 1k r20 12 r21 62 v cc v bb 3 v c14 10 tl431 u5 mc10h116fn c15 0.1 c11 0.1 c16 0.1 c12 0.1 r14 1k v bb 3v c9 .47 r12 4.7 c13 0.1 hfbr-25x6z r13 4.7 u4c u4a u4b u3 r11* r10 15 c8* 74actq00 u1b 74actq00 u1d 74actq00 u1c r9* r8* hfbr-15x7z c7 0.001 c6 0.1 c5 10 c4 0.001 c3 0.1 q3 2n3904 v cc 74actq00 u1a pof 300 300 1k 43 pf r8 r9 r11 c8 hcs 82 82 470 120 pf tolerance 1% 1% 1% 1% the values of r8, r9, r11, and c8 are different for pof and hcs drive circuits. all capacitor values are in micro farads, with 10% tolerance (unless otherwise noted). all resistances are in ohms with 5% tolerance (unless otherwise noted). u2 mc10h116fn mc10h116fn 2 20 + + + 10 14
5 figure 2. recommended power supply fi lter and +5 v ecl signal terminations for the transmitter and receiver applica- tion circuit of figure 1. figure 4. typical optical power budget vs. data rate. figure 3. average modulated power. optical power budget edb 10 21 15 9 data rate e mbd 90 70 130 150 19 11 110 17 13 30 50 pof hcs 8 td 9 t x v ee 7 td 6 t x v cc 5 r x v cc 4 3 rd 2 rd 82 10 f 0.1 f 4.7 h 0.1 f 1 r x v ee +5 v ecl serial data source 0.1 f 0.1 f 82 120 120 +5 v ecl serial data receiver 4.7 h 10 f + + + e 5 v 82 82 120 120 fiber-optic transceiver shown in figure 1 4.7 h average power e w 0 200 100 0 duty cycle e % 20 40 80 100 150 50 60 average power, 50% duty cycle average modulated power
6 125 megabaud versatile link transmitter warning: when viewed under some conditions, the optical port may expose the eye beyond the maxi- mum permissible exposure recommended in ansi z136.2, 1993. under most viewing conditions there is no eye hazard. caution: the small junction sizes inherent to the design of this component increase the components suscep ti bility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by esd. hfbr-15x7z series description the hfbr-15x7z transmitters incorporate a 650 nano- meter led in a horizontal (hfbr-1527z) or vertical (hf- br-1537z) gray housing. the hfbr-15x7z transmitters are suitable for use with current peaking to decrease response time and can be used with hfbr-25x6z receiv- ers in data links operating at signal rates from 1 to 125 megabaud over 1 mm diameter plastic optical fi ber or 200 m diameter hard clad silica glass optical fi ber. refer to applica tion note 1066 for details for recom mended interface circuits. absolute maximum ratings parameter symbol min. max. unit reference storage temperature t s -40 85 c operating temperature t o -40 70 c lead soldering temperature cycle time 260 c note 1, 9 10 s transmitter high level forward i f,h 120 ma 50% duty cycle input current 1 mhz transmitter average forward input current i f,av 60 ma reverse input voltage v r 3 v anode 1 cathode 2 ground 3 ground 4 ground ground see note 6
7 electrical/optical characteristics 0 to 70c , unless otherwise stated. parameter symbol min. typ. [2] max. unit condition note transmitter output p t -9.5 -7.0 -4.8 dbm i f,dc = 20 ma, 25c note 3 optical power, 1 mm pof -10.4 -4.3 0-70c transmitter output p t -6.0 -3.0 -0.5 dbm i f,dc = 60 ma, 25c note 3 optical power, 1 mm pof -6.9 -0.0 0-70c transmitter output p t -14.6 -13.0 -10.5 dbm i f,dc = 60 ma, 25c note 3 optical power, -15.5 -10.0 0-70c 200 m hcs ? output optical power p t -0.02 db/c temperature coeffi cient t peak emission wavelength ? pk 640 650 660 nm peak wavelength ? 0.12 nm/c temperature coeffi cient t spectral width fwhm 21 nm full width, half maximum forward voltage v f 1.8 2.1 2.4 v i f = 60 ma forward voltage v f -1.8 mv/c temperature coeffi cient t transmitter numerical na 0.5 aperture thermal resistance, ? jc 140 c/w note 4 junction to case reverse input breakdown v br 3.0 13 v i f,dc = -10 a voltage diode capacitance c o 60 pf v f = 0 v, f = 1 mhz unpeaked optical rise t r 12 ns i f = 60 ma figure 1 time, 10% - 90% f = 100 khz note 5 unpeaked optical fall t f 9 ns i f = 60 ma figure 1 time, 90% - 10% f = 100 khz note 5 notes: 1. 1.6 mm below seating plane. 2. typical data is at 25c. 3. optical power measured at the end of 0.5 meter of 1 mm diameter plastic or 200 m diameter hard clad silica optical fi ber with a large area detector. 4. typical value measured from junction to pc board solder joint for horizontal mount package, hfbr-1527z. ? jc is approximately 30c/w higher for vertical mount package, hfbr-1537z. 5. optical rise and fall times can be reduced with the appropriate driver circuit; refer to application note 1066. 6. pins 5 and 8 are primarily for mounting and retaining purposes, but are electrically connected; pins 3 and 4 are electrical ly unconnected. it is recommended that pins 3, 4, 5, and 8 all be connected to ground to reduce coupling of electrical noise. 7. refer to the versatile link family fiber optic cable and connectors technical data sheet for cable connector options for 1 mm plastic optical fi ber and 200 m hcs fi ber. 8. the led current peaking necessary for high frequency circuit design contributes to electromagnetic interference (emi). care must be taken in circuit board layout to minimize emissions for compliance with governmental emi emissions regulations. refer to application not e 1066 for design guidelines. 9. moisture sensitivity level (msl) is 3
8 figure 2. typical spectra normalized to the 25c peak. figure 1. test circuit for measuring unpeaked rise and fall times. figure 3. typical forward voltage vs. drive current. figure 4. typical normalized output optical power vs. drive current. normalized spectral output power 620 1.2 0.6 0 wavelength (nm) 630 650 670 680 1.0 0.2 660 70 c 0.8 0.4 640 25 c 0 c v f - forward voltage - v 1 2.4 2.0 1.6 i f,dc - transmitter drive current (ma) 10 100 1.8 70 c 2.2 25 c 0 c p t - normalized output power - db 1 0 -15 -25 i f,dc - transmitter drive current (ma) 10 100 -20 70 c -5 0 c -10 25 c hp8082a pulse generator 50 ohm load resistor hp54002a 50 ohm bnc input pod hp54100a oscilloscope bcp model 300 500 mhz bandwidth silicon avalanche photodiode
9 125 megabaud versatile link receiver caution: the small junction sizes inherent to the design of this component increase the components suscep ti bility to damage from electrostatic discharge (esd). it is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by esd. hfbr-25x6z series description the hfbr-25x6z receivers contain a pin photodiode and transimpedance pre-amplifi er circuit in a horizontal (hf- br-2526z) or vertical (hfbr-2536z) blue housing, and are designed to interface to 1mm diameter plastic opti- cal fi ber or 200 m hard clad silica glass optical fi ber. the receivers convert a received optical signal to an analog output voltage. follow-on circuitry can optimize link per- formance for a variety of distance and data rate require- ments. electrical bandwidth greater than 65 mhz allows design of high speed data links with plastic or hard clad silica optical fi ber. refer to applica tion note 1066 for de- tails for recommended interface circuits. absolute maximum ratings parameter symbol min. max. unit reference storage temperature t s -40 +75 c operating temperature t a 0 +70 c lead soldering temperature 260 c note 1, 11 10 s signal pin voltage v o -0.5 v cc v supply voltage v cc -0.5 6.0 v output current i o 25 ma cycle time 1 2 ground 3 4 ground ground see notes 2, 4, 9 ground signal v cc
10 electrical/optical characteristics 0 to 70c; 5.25 v v cc 4.75 v; power supply must be fi ltered (see figure 1, note 2). parameter symbol min. typ. max. unit test condition note ac responsivity 1 mm pof r p,apf 1.7 3.9 6.5 mv/w 650 nm note 4 ac responsivity 200 m hcs r p,hcs 4.5 7.9 11.5 mv/w rms output noise v no 0.46 0.69 mv rms note 5 equivalent optical noise input p n,rms - 39 -36 dbm note 5 power, rms - 1 mm pof equivalent optical noise input p n,rms -42 -40 dbm note 5 power, rms - 200 m hcs peak input optical power - p r -5.8 dbm 5 ns pwd note 6 1 mm pof -6.4 dbm 2 ns pwd peak input optical power - p r -8.8 dbm 5 ns pwd note 6 200 m hcs -9.4 dbm 2 ns pwd output impedance z o 30 50 mhz note 4 dc output voltage v o 0.8 1.8 2.6 v p r = 0 w supply current i cc 9 15 ma electrical bandwidth bw e 65 125 mhz -3 db electrical bandwidth * rise time 0.41 hz * s electrical rise time, 10-90% t r 3.3 6.3 ns p r = -10 dbm peak electrical fall time, 90-10% t f 3.3 6.3 ns p r = -10 dbm peak pulse width distortion pwd 0.4 1.0 ns p r = -10 dbm note 7 peak overshoot 4 % p r = -10 dbm note 8 peak notes: 1. 1.6 mm below seating plane. 2. the signal output is an emitter follower, which does not reject noise in the power supply. the power supply must be fi ltered as in figure 1. 3. typical data are at 25c and v cc = +5 vdc. 4. pin 1 should be ac coupled to a load 510 with load capacitance less than 5 pf. 5. measured with a 3 pole bessel fi lter with a 75 mhz, -3db bandwidth. 6. the maximum peak input optical power is the level at which the pulse width distortion is guaranteed to be less than the pw d listed under test condition. p r,max is given for pwd = 5 ns for designing links at 50 mbd operation, and also for pwd = 2 ns for designing links up to 125 mbd (for both pof and hcs input conditions). 7. 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform. 8. percent overshoot is defi ned at: (v pk - v 100% ) CCCCCCCCCCCC ? 100% v 100% 9. pins 5 and 8 are primarily for mounting and retaining purposes, but are electrically connected. it is recommended that the se pins be con- nected to ground to reduce coupling of electrical noise. 10. if there is no input optical power to the receiver (no transmitted signal) electrical noise can result in false triggering of the receiver. in typical applications, data encoding and error detection prevent random trigger ing from being interpreted as valid data. refer to applic ation note 1066 for design guidelines. 11. moisture sensitivity level (msl) is 4
11 figure 1. recommended power supply fi lter circuit. figure 2. simplifi ed receiver schematic. figure 3. typical pulse width distortion vs. peak input power. figure 4. typical output spectral noise density vs. frequency. figure 5. typical rise and fall time vs. temperature.
2.03 (0.080) 10.16 (0.400) 5.08 (0.200) 6.86 (0.27) 18.80 (0.740) 18.29 (0.720) versatile link mechanical dimensions versatile link printed circuit board layout dimensions horizontal modules hfbr-1537z hfbr-2526z for product information and a complete list of distributors, please go to our website: 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 ? 2005-2012 avago technologies. all rights reserved. obsoletes 5989-4631en av02-1502en - april 11, 2012 horizontal modules hfbr-1527z hfbr-2526z 6.86 (0.270) 10.16 (0.400) 4.19 (0.165) 1.27 (0.050) 2.54 (0.100) 0.51 (0.020) 18.8 (0.74) 2.03 (0.080) 7.62 (0.30) 0.64 (0.025) 7.62 (0.300) 2.77 (0.109) 1.85 (0.073) 0.64 (0.025) dia. 5.08 (0.200) 3.81 (0.150) max. 3.56 (0.140) min. 4 1 3 2 5 8 7.62 (0.300) 1.01 (0.040) dia. 1.85 (0.073) min. pcb edge top view 2.54 (0.100) 7.62 (0.300) vertical module horizontal module top views dimensions in millimeters (inches).

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