HFBR-0507Z Series HFBR-15X7Z Transmitters HFBR-25X6Z Receivers 125 Megabaud Versatile Link The Versatile Fiber Optic Connection Data Sheet Description Features RoHS-compliant The 125 MBd Versatile Link (HFBR-0507Z Series) is the most cost-eff ective fi ber-optic solution for transmission Data transmission at signal rates of 1 to 125 MBd over of 125 MBd data over 100 meters. The data link consists distances of 100 meters of a 650 nm LED transmitter, HFBR-15X7Z, and a PIN/pre- Compatible with inexpen sive, easily terminated plas- amp receiver, HFBR-25X6Z. These can be used with low- tic optical fi ber, and with large core silica fi ber cost plastic or silica fi ber. One mm diameter plastic fi ber High voltage isolation provides the lowest cost solution for distances under 25 Transmitter and receiver application circuit meters. The lower attenuation of silica fi ber allows data sche matics and recommended board layouts avail- transmission over longer distance, for a small diff erence able in cost. These com po nents can be used for high speed data links without the problems common with copper Interlocking feature for single channel or duplex links, wire solutions, at a competitive cost. in a vertical or horizontal mount confi guration The HFBR-15X7Z transmitter is a high power 650 nm LED in a low cost plastic housing designed to effi ciently Applications couple power into 1 mm diameter plastic optical fi ber Intra-system links: board-to-board, rack-to-rack and 200 m Hard Clad Silica (HCS ) fi ber. With the recom- Telecommunications switching systems mended drive circuit, the LED operates at speeds from Computer-to-peripheral data links, PC bus extension 1-125 MBd. The HFBR-25X6Z is a high band width analog receiver con tain ing a PIN photodiode and internal tran- Industrial control simpedance amplifi er. With the recommended applica- Proprietary LANs tion circuit for 125 MBd operation, the performance of Digitized video the complete data link is specifi ed for of 0-25 meters with Medical instruments plastic fi ber and 0-100 meters with 200 m HCS fi ber. A wide variety of other digitizing circuits can be combined Reduction of lightning and voltage transient suscepti- with the HFBR-0507Z Series to optimize perfor-mance bility and cost at higher and lower data rates. HCS is a registered trademark of Spectran Corporation.HFBR-0507Z Series 125 MBd Data Link Data link operating conditions and performance are operation. The Applications Engineer ing Department in specifi ed for the HFBR-15X7Z transmitter and HFBR-25X6Z the Avago Optical Communication Division is available to receiver in the recommended applications circuits shown assist in optimizing link performance for higher or lower in Figure 1. This circuit has been optimized for 125 MBd speed operation. Recommended Operating Conditions for the Circuits in Figures 1 and 2. Parameter Symbol Min. Max. Unit Reference Ambient Temperature T 0 70 C A Supply Voltage V +4.75 +5.25 V CC Data Input Voltage Low V V-1.89 V-1.62 V IL CC CC Data Input Voltage High V V-1.06 V-0.70 V IH CC CC Data Output Load R 45 55 Note 1 L Signaling Rate f 1 125 MBd S Duty Cycle D.C. 40 60 % Note 2 -9 Link Performance: 1-125 MBd, BER 10 , under recommended operating conditions with recommended transmit and receive application circuits. 3 4 Parameter Symbol Min. Typ. Max. Unit Condition Reference Optical Power Budget, 1 m POF OPB 11 16 dB Note 5,6,7 POF Optical Power Margin, OPM 3 6 dB Note 5,6,7 POF,20 20 m Standard POF Link Distance with l 20 27 m Standard 1 mm POF Optical Power Margin, OPM 3 6 dB Note 5,6,7 POF,25 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 7 12 dB Note 5,6,7 HCS Optical Power Margin, OPM 3 6 dB Note 5,6,7 HCS,100 100 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 - 2 V. CC 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 supply 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 LED LOP degradation and additional fi xed passive losses (such as in-line connectors) in addition to the minimum specifi ed distance. 2