caution: the small junction sizes inherent to the design of this component increase the component's susceptibility 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-0600Z series sercos fiber optic transmitters and receivers data sheet sercos sercos is a serial realtime communication system, a standard digital interface for communication between controls and drives for numerically controlled machines. the sercos interface specifi cation was written by a joint working group of the vdw (german machine tool builders association) and zvei (german electrical and electronic manufacturers association) to allow data exchange between nc controls and drives via fi ber optic rings, with isolation and noise immunity. the HFBR-0600Z family of fi ber optic transmitters and receivers comply to the sercos specifi cations for transmitter and receiver optical characteristics and connector style (sma). description the HFBR-0600Z components are capable of operation at symbol rates from dc to over 2 mbd and distances from 0 to over 20 metres. the hfbr-1602z and hfbr-1604z transmitters contain a 655 nm algaas emitter capable of effi ciently launching optical power into 1000 mm plastic optical fi ber. the optical output is specifi ed at the end of 0.5 m of plastic optical fi ber. the hfbr-1604z is a selected version of the hfbr-1602, with power specifi ed to meet the sercos high attenua- tion specifi cations. the hfbr-2602z receiver incorporates an integrated photo ic containing a photodetector and dc amplifi er driving an open-collector schottky output transistor. the hfbr-2602z is designed for direct interfacing to popular logic families. the absence of an internal pullup resistor allows the open-collector output to be used with logic families such as cmos requiring voltage excursions higher than v cc . the hfbr-2602z has a dynamic range of 15 db. features ??? fully compliant to sercos optical specifi cations ??? optimized for 1 mm plastic optical fi ber ??? compatible with sma connectors ??? auto-insertable and wave solderable ??? data transmission at symbol rates from dc to over 2 mbd for distances from 0 to over 20 metres applications ??? industrial control data links ??? reduction of lightning and voltage transient suscep- tibility ??? tempest-secure data processing equipment ??? isolation in test and measurement instruments ??? robotics communication
2 HFBR-0600Z sma series mechanical dimensions hfbr-160xz transmitters hfbr-2602z receiver pin function 1* 2 3 4* 5* 6 7** 8* n.c. anode n.c. n.c. n.c. n.c. cathode n.c. pin function 1* 2 3 4* 5* 6 7 8* n.c. v cc (5 v) common n.c. n.c. data common n.c. * pins 1, 4, 5, and 8 are isolated from the internal circuitry, but electrically connected to one another. ** transmitter pin 7 may be left unconnected if necessary. in the receiver, both the opencollector data output pin 6 and v cc pin 2 are referenced to common pin 3 and 7. it is essential that a bypass capacitor (0.1 ? f ceramic) be connected from pin 2 (v cc ) to pin 3 (circuit common) of the receiver. sma is an industry standard fi ber optic connector, available from many fi ber optic connector suppliers. hfbr-4401z is a kit consisting of 100 nuts and 100 washers for panel mounting the HFBR-0600Z components.
3 hfbr-1602z/1604z transmitters 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. 260 c note 1 time 10 s note 1 forward input current peak i fpk 120 ma forward input current average i favg 60 ma reverse input voltage v br -5 v electrical/optical characteristics 0 to 55 c, unless otherwise stated. parameter symbol min. typ. [2] max. unit condition reference forward voltage v f 1.5 1.9 2.2 v i f = 35 ma forward voltage temp. coeffi cient ? v f / ? t -1.2 mv/c i f = 35 ma reverse input voltage v br -5.0 -18 v i r = 100 ? a peak emission wavelength ? p 640 655 675 nm full width half maximum fwhm 20 30 nm 25 c diode capacitance c t 30 pf vf = 0 f = 1 mhz optical power temp. coeffi cient ? p t / ? t -0.01 dbm/c i f = 35 ma thermal resistance ? ja 330 c/w notes 3, 4 peak optical output power of hfbr-1602z p t1602 -10.5 -5.5 dbm i f = 35 ma notes 5, 6,11 peak optical output power of hfbr-1604z p t1604 -7.5 -10.5 -3.5 -5.5 dbm dbm i f = 60 ma i f = 35 ma notes 5, 6,11 rise time (10% to 90%) t r 57 50 ns ns i f = 60 ma i f = 35 ma fall time (90% to 10%) t f 40 27 ns ns i f = 60 ma i f = 35 ma
4 hfbr-2602z 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. 260 c note 1 time 10 s 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 avg 40 mw fan out (ttl) n 5 note 8 electrical/optical characteristics 0 to 55 c; fiber core diameter 1.0 mm, fi ber n.a. 0.5, 4.75 v v cc 5.25 v parameter symbol min. typ. [2] max. unit condition reference high level output current i oh 5 250 ? a v oh = 18 v p r < -31.2 dbm low level output voltage v ol 0.4 0.5 v i ol = 8 ma p r > -20.0 dbm high level supply current i cch 3.5 6.3 ma v cc = 5.25 v p r < -31.2 dbm low level supply current i ccl 6.2 10 ma v cc = 5.25 v p r > -20.0 dbm dynamic characteristics 0 to 55 c unless otherwise specifi ed; 4.75 v v cc 5.25 v; ber 10 -9 parameter symbol min. typ. [2] max. unit condition reference peak input power level logic high p rh -31.2 dbm ? p = 655 nm note 7 peak input power level logic low p rl -20.0 -5.0 dbm i ol = 8 ma note 7 propagation delay low to high t plh 60 ns p r = -20 dbm 2 mbd note 8, 9 propagation delay high to low t phl 110 ns p r = -20 dbm 2 mbd note 8, 9 pulse width distortion, t plh - t phl pwd 50 -50 ns ns p r = -5 dbm p r = -20 dbm note 10 figure 6 notes: 1. 2.0 mm from where leads enter case. 2. typical data at t a = +25 c. 3. thermal resistance is measured with the transmitter coupled to a connector assembly and fi ber, and mounted on a printed circuit board. 4. pins 2, 6, and 7 are welded to the cathode header connection to minimize the thermal resistance from junction to ambient. t o further reduce the thermal resistance, the cathode trace should be made as large as is consistent with good rf circuit design. 5. p t is measured with a large area detector at the end of 0.5 metre of plastic optical fi ber with 1 mm diameter and numerical aperture of 0.5. 6. when changing ? w to dbm, the optical power is referenced to 1 mw (1000 ? w). optical power p(dbm) = 10 log [p ( ? w)/1000 ? w]. 7. measured at the end of 1mm plastic fi ber optic cable with a large area detector. 8. 8 ma load (5 x 1.6 ma), r l = 560 ? . 9. propagation delay through the system is the result of several sequentially occurring phenomena. consequently it is a combin ation of data-rate- limiting eff ects and of transmission-time eff ects. because of this, the data-rate limit of the system must be described in terms of time diff erentials between delays imposed on falling and rising edges. as the cable length is increased, the propagation delays increase. data-rat e, as limited by pulse width distortion, is not aff ected by increasing cable length if the optical power level at the receiver is maintained. 10. pulse width distortion is the diff erence between the delay of the rising and falling edges. 11. both hfbr-1602z and hfbr-1604z meet the sercos "low attenuation" specifi cations when operated at 35 ma; only hfbr-1604z meets the sercos "high attenuation" limits when operated at 60 ma.
5 figure 1. forward voltage and current characteristics. figur e 2. typical transmitter output vs. forward current. figure 3. transmitter spectrum normalized to the peak at 25 c. figure 4. typical propagation delay through system with 0.5 metr e of cable. figure 5. typical hfbr-160xz/2602z link pulsewidth distortion vs. optical power.
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 ? 2005-2012 avago technologies. all rights reserved. obsoletes 5989-4798en av02-3638en - june 19, 2012 figure 6. system propagation delay test circuit and waveform timing defi nitions.
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