AFBR-59SMI2Z Datasheet, PDF (1/8 Pages) Broadcom Corporation. – Fast Ethernet communications over POF

AFBR-59SMI2Z
250-MBd Compact 650-nm Transceiver for Data
Communication over Polymer Optical Fiber (POF)
Cables with SMI Connector
Data Sheet
Description
The Avago Technologies AFBR-59SMI2Z transceiver provides
system designers with the ability to support serial
communication with baud rates of up to 250 MBd over 2.2-mm
jacketed standard polymer optical fiber (POF) with 1-mm core
diameter and NA 0.5.
The SMI optical interconnect with its push-pull positive
latching, with safe-release mechanism, provides secure, safe
and easy to mate and de-mate optical connection for
miscellaneous industrial and medical applications.
The AFBR-59SMI2Z is Laser Class 1, lead-free and compliant
with RoHS.
Transmitter
The transmitter consists of a 650-nm LED, which is controlled
by a fully integrated driver IC. The LED driver operates at 3.3V. It
receives Low Voltage Differential Signaling (LVDS) electrical
input, and converts it into a modulated current driving the LED.
LED and driver IC are packaged in an optical subassembly.
The optimized lens system of the optical subassembly couples
the emitted optical power very efficiently into 1-mm core POF
cable.
Receiver
The receiver utilizes a fully integrated single chip solution,
which provides excellent immunity to EMI and fast transient
dV/dt rejection. The receiver directly converts light to a digital
LVDS output signal and operates at 3.3-V nominal supply. The
integrated receiver is packaged in an optical 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.
Features
 Fast Ethernet communications over POF
 Data rates up to 250 MBd
 High EMI/EMC robustness
 SMI connector system
 Link lengths up to 50m POF
 3.3V operation
 LVDS input and output data connections
 Analog monitoring output (RSSI)
 Operating temperature range from –40°C to +85°C.
 RoHS compliant
Applications
 Industrial and medical applications
 Fast Ethernet
Package
The transceiver package contains the two optical
subassemblies, which are mounted in the black housing for
SMI optical connection.
The inserts are packages inside a conductive plastic inner
housing, which provides additional immunity against EMI/
EMC.
Broadcom
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