AFBR-5978Z
Digital Diagnostic 650nm Transceiver for Fast Ethernet
(10/100 Mbps) with SC-RJ connector
Data Sheet
Features
• Compatible with electrical and optical performance
of the POFAC recommendations for the Fast Ethernet
over Plastic Optical Fiber (POF).
• Compatible with the Electrical and Optical perfor-
mance of the ProNet recommendations the Fast
Ethernet over POF and Hard-Clad Silica Fiber (HCS).
• Manufactured in an ISO 9001 certied facility
• DMI [Digital Diagnostics Monitoring Interface,
SFF-8472 Rev 9.3], provides real-time monitoring of:
- Temperature
- Supply voltage
- Received Optical Power (Alarm/Warning ag)
• LVPECL Signal Detect Output
• Temperature range –25 to +85 °C
Applications
• Factory automation at Fast Ethernet speeds
• Fast Ethernet networking over POF and HCS
• Link Distance up to 50 m POF or 100 m HCS
(See application note 5290 for details)
HCS® is a trademark of OFS Corporation
AFBR-5978Z is compatible with the SC-RJ Connecting System from
Reichle & De-Massari AG, Switzerland
Description
The AFBR-5978Z transceiver provides the system de-
signer with the ability to implement Fast Ethernet (100
Mbps) or Ethernet (10 Mbps) over 50 meter standard
bandwidth 0.5±0.05 NA POF and 100 meter standard
bandwidth 0.37±0.04 NA HCS ber. The connectivity
available for the transceiver is SC-RJ. This product is lead
free and compliant with RoHS.
Transmitter
The transmitter contains a 650nm LED with an integrat-
ed driver. The LED driver operates at 3.3 V. It receives a
LVPECL compatible electrical input, and converts it into
a modulated current driving the LED. The LED is pack-
aged in an optical subassembly, part of the transmitter
section. The optical subassembly couples the output
optical power eciently into POF or HCS ber.
Receiver
The receiver utilizes a Si PIN photodiode. The PIN pho-
todiode is packaged in an optical sub-assembly, part of
the receiver section. This optical subassembly couples
the optical power eciently from POF or HCS ber to
the receiving PIN. The integrated IC operates at 3.3 V and
converts the photocurrent into LVPECL compatible elec-
trical output.
Package
The transceiver package consist of four basic elements;
two optical subassemblies, an electrical subassembly
and the housing as illustrated in the block diagrams in
Figure 1. The package outline drawing and pin out are
shown in Figures 2 and 3.
Patent - www.avagotech.com/patents
