SPFBFT00303 Datasheet, PDF (1/11 Pages) AVAGO TECHNOLOGIES LIMITED – Optical Bidirectional Transceiver for byteflight

SPF BFT 003 03
Optical Bidirectional Transceiver for byteflight
Data Sheet
Short description of complete functional unit
The device consists of a LED mounted on a large area
photodiode for bidirectional optical transmission in half
duplex mode. LED and photodiode are driven by the mul-
tifunction IC E100.34C2 from ELMOS.
The transmitting and receiving functional units with
ELMOS-IC E100.34C2 may be split into the following
blocks:
VDD2
GND
VDD1
DO
Transmitter
LED Driver
LEDO
Features
• Optical transmitter and receiver for maximum datarate
10 Mbaud (half duplex burst mode)
• Transmitter: LED with 650 nm for working in low
attenuation range of PMMA fiber
• Receiver: Photodiode with preamp, digitizer with DC
elimination circuit (tracked decision threshold), Sleep -
and Wake-up-Function, output stage (electrical output
driver)
• Built in transmitter and receiver gate for half duplex
mode (mutual blocking of transmitter and receiver)
• Operation at 5V or 8V-11V power supply voltage
• Built in pulse width detection for indicating Sync,
Alarm and continuous light on (integrated time
basis to differentiate and evaluate Sync, Alarm and
Continuous Light conditions Alarm output)
• Diagnose function forphotocurrent
• Mechanical assembly: 6 Pin CAI package for easy
coupling of POF (plastic optical fiber) with insert
LED
DI
ALARM
Receiving amplifier
Figure 1. Basic functional units of SPF BFT3 03
PDI
Photodiode
Safety Hints
Applications of new chip technologies lead to increasing optical efficiency and growing and higher
levels of optical performance. We therefore recommend that the current versions of the IEC 60825-1 and
EN 60825-1 standards are taken into account right from the outset, i.e. at the equipment development stage, and
that suitable protection facilities are provided.