AFBR-24x8xZ DC-50MBd Miniature Link Fiber Optic Receiver Data Sheet Description Features The component is designed to provide cost effective, high RoHS-compliant performance fiber optic communication links for infor - Work with Avago HFBR-14xxZ (820nm LED) transmitter mation systems and industrial applications with link dis- Data transmission at signal rates from DC up to 50 MBd tances of up to 2 km. The receivers are directly compatible with popular industry-standard connectors: ST and SMA. Receiver: Integrated PIN diode and digitalizing IC with They are designed for use with 50/125 m, 62.5/125 m, CMOS/TTL output logic and 200 m multimode fiber. Up to 2 km distance with Multimode Glass Fiber Cable Operating temperature range of -40C to +85C AFBR-24x8xZ Available Part Numbers 3.3 V and 5 V supply voltage operation Part Number Description RSSI output AFBR-2408Z Receiver with SMA port AFBR-2418Z Receiver with ST port Applications AFBR-2418TZ Receiver with threaded ST port Optical transmission from DC up to 50 MBd AFBR-2418MZ Receiver with metal ST port Industrial control and factory automation High voltage isolation Link Length Elimination of ground loops Data Rate Max. Distance Fiber Size (MBd) (m) (m) Transmitter Reduces voltage transient susceptibility 50 900 50/125 HFBR-1414Z Power substation automation 50 2000 62.5/125 HFBR-1414Z 50 100 200 HFBR-1414Z Note: Verified with PRBS7 pattern using HFBR-1414Z transmitter, respecting its worst case LOP conditions but assuming a proper fiber connection (direct connection without add. connectors). Multiple or weak connections may reduce the achievable link length.Package and Handling Information AFBR-24x8xZ Low-Cost 50 MBd Receiver Package Information Description The receiver is housed in a low-cost, dual-inline package The AFBR-24x8xZ fiber optic receiver is designed to oper - that is made of high strength, heat resistant, chemically ate with the Avago Technologies HFBR-14xxZ fiber optic resistant, and UL 94V-O flame retardant ULTEM plastic trans-mitters and multimode glass fiber cable. Consistent (UL File E121562). The receivers (suffix Z, TZ) are easily coupling into the receiver is assured by the optical system identified by the dark grey color connector port. A metal with lens. The receiver output is a digital CMOS/TTL signal. port option is also available (suffix MZ). The metal port op - The AFBR-24x8xZ receiver contains an IC with integrated tion components have an internal electrical connection photodiode which directly converts the incoming opti- between the metal port and the four grounding pins, as cal signal to a digital output signal without the requisite shown in the package outline drawing. Signal ground is for additional external circuitry. Because of its integrated separate from the four grounding pins to give flexibility in design, the receiver has very high EMC resistance. A wide connecting the port to signal or chassis ground. The pack- receiver dynamic range and high sensitivity over tempera- age is designed for auto-insertion and wave soldering so ture is achievable. The data rate typically goes from DC to it is ideal for high volume production applications. 50MBd. A monitor (RSSI) output, which delivers an output current proportional to the average incoming light power, Handling and Design Information is available. Each part comes with a protective port cap or plug cov- For an almost noise-free RSSI-signal smoothing compo- ering the optics. These caps/plugs will vary by port style. nents are recommended. A capacitor in parallel to the re- When soldering, it is advisable to leave the protective cap sistor on the RSSI output reduces potential high frequency on the unit to keep the optics clean. Good system per- signal parts. The use of a single 100 nF capacitor for signal formance requires clean port optics and cable ferrules to smoothing is sufficient in most common applications, as avoid obstructing the optical path. Clean compressed air shown in the Recommended Receiver Circuitry section. If often is sufficient to remove particles of dirt methanol on this RSSI function is not required, the output pin can be a cotton swab also works well. left floating. The RSSI-signal is derived from internal con - trolling loops therefore, the typical time constant of pure RSSI output current without an external filter can be up to 1 ms. This time constant also depends on the actual aver- age incoming light power. Absolute Maximum Ratings Parameter Symbol Min Max Unit Notes Storage Temperature T -40 +85 C S Operating Temperature T -40 +85 C A Supply Voltage V -0.3 5.5 V CC Maximum DC Output Current I 10 mA O Voltage at RSSI Output V -0.3 V +0.3 V RSSI CC Lead Soldering Cycle - Temp T 260 C 1.6 mm below seating plane SOLD Lead Soldering Cycle - Time t 10 s SOLD 2