AFBR-59F2Z Broadcom

AFBR-59F2Z 250MBd Compact 650nm Transceiver for Data communication over Polymer Optical Fiber (POF) cables with a bare fiber locking system Data Sheet Description Features The Avago Technologies AFBR-59F2Z transceiver provides Easy bare fiber termination solution for 2.2mm jacket system designers with the ability to support serial com- POF munication with baud rates of up to 250MBd over 2.2mm EMI/ EMC robust jacketed standard polymer optical fiber (POF). Link lengths up to 40m POF The innovative bare fiber locking mechanism of the trans - LVDS interface compatible ceiver allows connection of POF cable with a simple insert Operating temp. range -40C to 85C and lock system eliminating the need for connectors. This facilitates fast installation and maintenance. 3.3V power supply operation The AFBR-59F2Z is Laser Class 1, lead-free and compliant Analog monitor output (MON) with RoHS. The very compact design is similar to that of Low power sleep mode the well known RJ-45 connector. Applications Transmitter Factory automation The transmitter consists of a 650nm LED which is con- Power generation and distribution system trolled by a fully integrated driver IC. The LED driver oper- Industrial vision system ates at 3.3V. It receives Low Voltage Differential Signaling (LVDS) electrical input, and converts it into a modulated Solar panel tracking system current driving the LED. LED and driver IC are packaged in Home/ Office Networking an optical subassembly. The optimized lens system of the optical subassembly couples the emitted optical power very efficiently into 1mm core POF cable. Receiver Package The receiver utilizes a fully integrated single chip solution The transceiver package contains the two optical subas- which provides excellent immunity to EMI and fast tran- semblies which are mounted in the housing for bare fiber sient dV/dt rejection. The receiver directly converts light connection. to a digital LVDS output signal and operates at 3.3V nomi- The metal shield on bare fiber clamp transceiver provides nal supply. The integrated receiver is packaged in an opti- excellent immunity to EMI/ EMC cal subassembly, which couples optical power efficiently from POF to the receiving PIN. The receiver features an analog monitor output of the incoming optical signal. The monitor output provides an analog voltage proportional to the average optical input power. In absence of receiver optical input signal, the receiver is in low power sleep mode and the differential output signal is pulled to ground. The receiver wakes up, when a valid optical input signal is detected.0.8 (10 ) 1.3 (2 ) Pin description and recommended PCB footprint The AFBR-597F2Z has ten active signal pins (including supply voltage and ground pins), two EMI shield solder posts, two additional ground pins and two mounting posts. The EMI shield solder posts and the additional ground pins are isolated from transceiver internal circuit and should be connected to equipment chassis ground or signal ground. Connecting the two additional ground pins with ground provides EMI shielding to the front of the device. Grounding these pins will also provide a ground connection of the POF jacket in order to ground small leakage currents in high voltage applications such as in HVDC installations. The mounting posts provide additional mechanical strength to hold the transceiver module on the application board. Figure 1 shows the top view of the PCB footprint and Pin-out diagram. Pin Descriptions Pin No. Name Symbol Pin No. Name Symbol 1 Data Input (Negative) TD- 8 Monitor Output (IAVG) MON 2 Data Input (Positive) TD+ 9 Data Output (Negative) RD- 3 Ground Tx GND 10 Data Output (Positive) RD+ 4 DC Supply Voltage Tx Vdd 11 EMI Shield GND - 5 (Optional) Ground Tx GND 12 EMI Shield GND - 6 DC Supply Voltage Rx Vdd 13 Additional EMI GND - 7 Ground Rx GND 14 Additional EMI GND - Top View 7.74 2 7 4 9 5.2 8 1 3 5 6 10 4.0 12 11 0 Mount Post Unplated (2) 2.74 13 14 Dimension: mm Outer edge housing Recommended PCB thickness: 1.57 0.08 FRONT 7.83 5.83 3.89 0 Figure 1. PCB footprint and Pin-out diagram 2 3.2 (2) 1.3 (2) 0.76 2.03 3.3 4.57 5.84 0