fiber optic transmitters and receivers for fieldbus applications HFBR-1505A/2505a (sma tx/rx for sercos) hfbr-1515b/2515b (st ? tx/rx for profibus) hfbr-1505c/2505a (sma tx/rx for interbus-s) technical data features ? meets 2/4 mbd industrial sercos, 1.5 mbd profibus and interbus-s standard ? sma and st ? ports ? 650 nm wavelength technology ? specified for use with 1 mm plastic optical fiber and 200 m m hard clad silica ? auto-insertable and wave solderable ? dc C 10 mbd applications ? industrial control data links ? factory automation data links ? voltage isolation applications ? plcs ? motor drives ? automotive ? sensor, meter and actuator interfaces description sercos sercos, an acronym for se rial r ealtime co mmunications s ystem, is a standard digital interface for communication in industrial cnc applications. the standard defines two data rates: 2 mbd and 4 mbd and was formed to allow data transfer between numerical controls and drives via fiber-optic rings, with voltage isolation and noise immunity. the HFBR-1505A/2505a products comply with sercos specifications for optical characteristics and connector style, and can also be used for data rates up to 10 mbd. the international standard is iec 1491. profibus profibus, an acronym of pro cess fi eld bus , is an open fieldbus standard defined for data rates ranging from 9.6 kbd to 12 mbd in selectable steps for wire and optical fiber. profibus is a german national din 19245 standard and a european cenelec standard en 50170. the st ? connector is the standard optical port of the profibus optical fiber version. the hfbr-1515b/2515b complies fully to the technical guideline using plastic optical fiber up to 1.5 mbd, and can also be used for data rates up to 10 mbd. please contact agilent regarding any future plans for a 12 mbd device. interbus-s interbus-s, a special open sensor/actuator bus, is finding a broad acceptance in the factory automation industry. the hfbr-1505c was specially designed for this application and is recommended as a powerful transmitter for use with 1 mm pof and 200 m m hcs ? fiber. the optical transmission guideline is a supplement of the german national din e 19258 standard draft. on the european level, pren 50254 is the draft of the interbus-s fieldbus. the hfbr-1505c transmitter can be used in conjunction with the hfbr-2505a receiver. package information all hfbr-x5x5x series transmitters and receivers are housed in a low-cost, dual-in-line st ? is a registered trademark of at&t. hcs ? is a registered trademark of spectran corporation.
2 specified link performance 0?c to +70?c, dc to 10 mbd, unless otherwise noted. parameter symbol min. max. unit condition reference link distance with 1 0.1 40 m pof notes 1,2,3,4 HFBR-1505A/2505a or 0.1 200 m hcs ? notes 1,2,3,5 hfbr-1515b/2515b link distance with 1 0.1 45 m pof notes 1,2,3,4 hfbr-1505c/2505a 0.1 300 m hcs ? notes 1,2,3,5 pulse width distortion pwd C30 +30 ns 25% to 75% note 1 duty cycle notes: 1. with recommended tx and rx circuits (60 ma nominal drive current). 2. pof hfbr-exxyyy 0.23 db/m worst case attentuation. 3. hcs ? hfbr-h/vxxyyy 10 db/rm worst case attenuation. 4. including a 3 db optical safety margin accounting for link service lifetime. 5. including a 2 db optical safety margin accounting for link service lifetime. package that is made of high strength, heat resistant, chemically resistant and ul v-o flame retardant plastic. the transmitters are easily identified by the light grey colored connector port. the receivers are easily identified by the dark grey colored connector port. the package is designed for auto- insertion and wave soldering so it is ideal for high volume production applications. handling and design information 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 particles of dirt; methanol on a cotton swab also works well. recommended chemicals for cleaning/degreasing x5x5x products alcohols: methyl, isopropyl, isobutyl. aliphatics: hexane, heptane. other: soap solution, naphtha. 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, agilent does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm. caution: the small junction size inherent in the design of these components increases 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.
3 absolute maximum ratings parameter symbol min. max. unit reference storage and operating temperature t s,o C40 85 ?c peak forward input current i f,pk 90 ma note 6 average forward input current i f,avg 60 ma reverse input voltage v r 3v lead soldering cycle temp t sol 260 ?c note 7 time 10 s hfbr-15x5x transmitters the hfbr-15x5x transmitter incorporates a 650 nm led in a light gray nonconductive plastic housing. the high light output power enables the use of both pin function 1
4
5
6
7
8 connected to pin 4
connected to pin 1
gnd
gnd
cathode
anode electrical/optical characteristics 0?c to +70?c unless otherwise noted. parameter symbol min. typ. [1] max. unit condition ref. optical power d p t / d t C0.02 db/?c temperature coefficient forward voltage v f 1.8 2.1 2.65 v i f, dc = 60 ma fig. 1 forward voltage d v f / d t C1.8 mv/?c fig. 1 temperature coefficient breakdown voltage v br 3.0 13 v i f, dc = C10 m a peak emission l pk 640 650 660 nm fig. 3 wavelength full width half max fwhm 21 30 nm fig. 3 diode capacitance c o 60 pf v f = 0 v, f = 1 mhz thermal resistance q jc 140 ?c/w notes 4,5 rise time (10% to 90%) t r 13 ns 10% to 90%, fall time (90% to 10%) t f 10 ns i f = 60 ma warning: when viewed under some conditions, the optical port may expose the eye beyond the maximum permissible exposure recommended in ansi z136.2, 1993. under most viewing conditions, there is no eye hazard. plastic optical fiber (pof) and hard clad silica (hcs ? ). this transmitter can be operated up to 10 mbd using a simple driver circuit. the hfbr-1505x is compatible with sma connectors, while the hfbr-1515x mates with st ? connectors. 5 6 7 8 4 1 bottom view,
hfbr-1505x
see note 10
4 peak output power 0?c to +70?c unless otherwise noted. model number symbol min. max. unit condition reference HFBR-1505A p t C10.5 C5.5 dbm pof, i f, dc = 35 ma notes 2,3,11 sercos C7.5 C3.5 pof, i f, dc = 60 ma figure 2 C18.0 C8.5 hcs ? , i f, dc = 60 ma hfbr-1515b C10.5 C5.5 pof, i f, dc = 35 ma notes 2,3,11 profibus C7.5 C3.5 pof, i f, dc = 60 ma figure 2 C18.0 C8.5 hcs ? , i f, dc = 60 ma hfbr-1505c C6.2 0.0 pof, i f, dc = 60 ma notes 3,8,9 interbus-s C16.9 C8.5 hcs ? , i f, dc = 60 ma figure 2 notes: 1. typical data at 25?c. 2. optical power measured at the end of 0.5 meters of 1 mm diameter plastic optical fiber with a large area detector. 3. minimum and maximum values for p t over temperature are based on a fixed drive current. the recommended drive circuit has temperature compensation which reduces the variation in p t over temperature, refer to figures 4 and 6. 4. thermal resistance is measured with the transmitter coupled to a connector assembly and fiber, and mounted on a printed circuit board. 5. to further reduce the thermal resistance, the cathode trace should be made as large as is consistent with good rf circuit design. 6. for i f,pk > 60 ma, the duty factor must maintain i f,avg 60 ma and pulse width 1 m s. 7. 1.6 mm below seating plane. 8. minimum peak output power at 25?c is C5.3 dbm (pof) and C16.0 dbm (hcs ? ) for 1505c series only. 9. optical power measured at the end of 1 meter of 1 mm diameter plastic or 200 m m hard clad silica optical fiber with a large area detector. 10. pins 1 and 4 are for mounting and retaining purposes, but are electrically connected; pins 5 and 6 are electrically isolated. it is recommended that pins 1, 4, 5, and 8 all be connected to ground to reduce coupling of electrical noise. 11. output power with 200 m m hard clad silica optical fiber assumes a typical C10.5 db difference compared to 1 mm plastic optical fiber. figure 1. typical forward voltage vs. drive current. figure 2. typical normalized optical power vs. drive current. figure 3. typical normalized optical spectra. 2.5 1 10 100 i f,do ?transmitter drive current ?ma v f ?forward voltage ?v 2.3 2.1 1.9 1.7 1.5 -40 ? 0 ? 25 ? 70 ? 85 ? 10 1 10 100 i f,do ?transmitter drive current ?ma p t ?normalized output power ?db 0 -10 -20 -30 -40 -40 ? 25 ? 85 ? 1.4 610 650 690 wavelength ?nm normalized spectral output power 1.2 0.8 0.4 0.2 0 -40 ? 0 ? 630 670 0.6 1.0 25 ? 70 ? 85 ?
5 figure 4. typical normalized optical power vs. temperature (in recommended drive circuit). figure 5. typical optical pulse width distortion vs. temperature and power supply voltage (in recommended drive circuit). 1.2 -40 -20 0 20 40 60 80 temperature ?? normalized output power 1.1 1.0 0.9 0.8 0.7 v cc = 5.0 v v cc = 5.25 v v cc = 4.75 v 2 -40 -20 0 20 40 60 80 temperature ?? pwd ?ns 1 -1 -2 -4 -5 v cc = 5.0 v v cc = 4.75 v -3 0 v cc = 5.25 v recommended drive circuit for hfbr-15x5x/25x5x figure 6. recommended transmitter and receiver drive circuit (i f, on = 35 ma or 60 ma nominal at t a = 25?c). 8 7 6 5 1 4 u2
hfbr-15x5 5 6 7 8 4 1 u3
hfbr-25x5 r2
2.7 c4
0.1 ? +5 v v cc 0 v ttl output 8 2 1 3 4 +5 v v cc 0 v ttl input r1 c1
10 ? c2
0.1 ? u1
ds75451 ttl compatible transmitter ttl compatible receiver r1 i f 82.5 w 35 ma 47 w 60 ma +
6 absolute maximum ratings parameter symbol min. max. unit reference storage and operating temperature t s C40 85 ?c supply voltage v cc C0.5 +5.5 v average output current i o,avg C16 C16 ma output power dissipation p od 80 mw lead soldering cycle temp 260 ?c note 2 time 10 s hfbr-25x5 receivers the hfbr-25x5x receiver consists of a silicon pin photodiode and digitizing ic to produce a logic compatible output. the ic includes a unique circuit to correct the pulse width distortion of the first bit after a long idle period. this enables operation from dc to 10 mbd electrical/optical characteristics 0?c to +70?c, 4.75 v < v cc < 5.25 v, v pCp noise 100 mv, unless otherwise noted. parameter symbol min. typ. [1] max. unit condition ref. peak input power p rh C42 dbm 1mm pof notes 3,5 level logic high C44 200 m m hcs ? peak input power p rl C20 C0 dbm 1 mm pof, note 3 level logic low C22 C2 200 m m hcs ? figs. 7,8, |pwd| < 30 ns 9,10 supply current i cc 27 45 ma v o = open high level output v oh 4.2 4.7 v i o = C40 m a voltage low level output v oh 0.22 0.4 v i o = +1.6 ma voltage output rise time t r 12 30 ns c l = 10 pf note 3 output fall time t f 10 30 ns cl = 10 pf note 3 notes: 1. typical data are at 25?c, v cc = 5.0 v. 2. 1.6 mm below seating plane. 3. in recommended receiver circuit, with an optical signal from the recommended transmitter circuit. 4. pins 1 and 4 are electrically connected to the conductive housing and are also used for mounting and retaining purposes. it is required that pin 1 and 4 be connected to ground to maintain conductive housing shield effectiveness. 5. ber 10e-9, includes a 10.8 db margin below the receiver switching threshold level (signal to noise ratio = 12). with low pwd for arbitrary data patterns. the receiver output is a pushCpull stage compatible with ttl and cmos logic. the receiver housing is a dark grey, conductive plastic. the hfbr-2505x is compatible with sma connectors, while the hfbr-2515x mates with st ? connectors. pin function 1
4
5
6
7
8 connected to pin 4
connected to pin 1
no connect
v cc
gnd
v o 5 6 7 8 4 1 bottom view,
hfbr-2505x
see note 4
7 figure 7. typical pof receiver overdrive p rl,max at 10 mbd vs. temperature and power supply voltage. figure 8. typical pof receiver pulse width distortion vs. optical power at 10 mbd. figure 9. typical pof receiver pulse width distortion vs. power supply voltage at high optical power, (0 dbm, 10 mbd). 6 -40 -20 0 20 40 60 100 temperature ?? received power ?dbm 5 4 3 1 0 v cc = 5.0 v v cc = 5.25 v v cc = 4.75 v 2 80 30 -22 -18 -14 -10 -5 2 p pl ?receiver optical input power ?dbm received pwd ?ns 20 10 0 -20 -30 -10 -2 figure 10. typical pof receiver pulse width distortion vs. power supply voltage at low optical power, (-21 dbm, 10 mbd). -13 4.7 4.9 5.0 5.1 5.3 5.5 v cc ?volts pwd ?ns -14 -15 -17 -18 -16 5.4 4.8 5.2 16 4.7 4.9 5.0 5.1 5.3 5.5 v cc ?volts pwd ?ns 15 14 13 10 9 12 5.4 11 4.8 5.2
7.0
(0.28) 6.3
(0.25) 5.1
(0.20) 2.5
(0.10) 2.8
(0.11) 1.3
(0.05) 21.2
(0.83) yyww
hfbr-xxxx part number date
code 12.5
(0.49) 3.8
(0.150) 1.3
(0.050) 7.6
(0.30) 4.8
(0.19) ? 1.5
(0.06) pins 5, 6, 7, 8 are 0.5 (0.020) x 0.25 (0.01) 5 6 7 8 4 1 pins 1, 4 are 0.6 (0.025) dia. 1.3
(0.05) 1.0
(0.04) 3.6
(0.140) 5 6 7 8 4 1 6.3
(0.25) 3.8
(0.150) 1.3
(0.050) 6.4
(0.250) dia. 12.5
(0.49) 5.1
(0.20) 2.5
(0.10) 1/4 - 36 uns 2a thread yyww
hfbr-xxxx 2.8
(0.11) part number date
code 16.1
(0.63) 7.6
(0.30) pins 5, 6, 7, 8 are 0.5 (0.020) x 0.25 (0.01) pins 1, 4 are 0.6 (0.025) dia. 1.3
(0.05) 1.0
(0.04) 3.6
(0.140) mechanical dimensions hfbr-x515x hfbr-x505x www.semiconductor.agilent.com data subject to change. copyright ? 1999 agilent technologies, inc. 5966-3153e (11/99)
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