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AFBR-59E4APZ Datasheet(PDF) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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AFBR-59E4APZ Datasheet(HTML) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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3 / 10 page  3 Application Information The Applications Engineering group is available to assist you with the technical understanding and design trade-offs associated with these transceivers. You can contact them through your Avago sales representative. The following information is provided to answer some of the most common questions about the use of these parts. Transceiver Optical Power Budget versus Link Length Optical Power Budget (OPB) is the available optical power for a fiber optic link to accommodate fiber cable losses plus losses due to in-line connectors, splices, optical switches, and to provide margin for link aging and unplanned losses due to cable plant reconfigura- tion or repair. Avago LED technology has produced 1300 nm LED devices with lower aging characteristics than normally associated with these technologies in the industry. The industry convention is 1.5 dB aging for 1300 nm LEDs. The 1300 nm Avago LEDs are specified to expe- rience less than 1 dB of aging over normal commercial equipment mission life periods. Contact your Avago sales representative for additional details. Recommended Handing Precautions Avago recommends that normal status precautions be taken in the handling and assembly of these transceiv- ers to prevent damage, which may be induced by elec- trostatic discharge (ESD). The AFBR-59E4APZ transceiv- er meets Jedec JESD22-A114 Class 2 products. Care should be used to avoid shorting the receiver data or signal detect outputs directly to ground without proper current limiting impedance. Solder and Wash Process Compatibility The transceivers are delivered with protective process plugs inserted into the LC receptacle. This process plug protects the optical subassemblies during wave solder and aqueous wash processing, and acts as a dust cover during shipping. These transceivers are compatible with either industry standard wave or hand solder processes. Shipping Container The transceiver is packaged in a shipping container designed to protect it from mechanical and ESD damage during shipment of storage. Board Layout - Decoupling Circuit, Ground Planes and Termination Circuits To achieve optimum performance from these trans- ceivers, do take care in the layout of your circuit board. Figure 2 provides a schematic for a recommended ter- mination circuit that works well with these parts, It is further recommended that a contiguous ground plane be provided in the circuit board directly under the transceiver to provide a low-inductance ground for signal return current. This recommendation is in keeping with good high frequency board layout practices. Figure 3 shows a recommended power supply filter. Board Layout - Hole Pattern The Avago transceiver complies with the circuit board “Common Transceiver Footprint” hole pattern defined in the original multisource announcement that defined the 2 x 5 package style. This drawing is reproduced in Figure 5 with the addition of ANSI Y14.5M compliant dimensioning to be used as a guide in the mechani- cal layout of your circuit board. Figure 5 illustrates the recommended panel opening and the position of the circuit board with respect to this panel. Regulatory Compliance These transceiver products are intended to enable commercial system designers to develop equipment that complies with the various international regula- tions governing certification of Information Technology Equipment. See the Regulatory Compliance Table for details. Additional information is available from your Avago sales representative. |
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