AFBR-5903AZ Avago Technologies US Inc., AFBR-5903AZ Datasheet - Page 2

• Manufacturer Part Number: AFBR-5903AZ
• Description: TXRX OPT FE MTRJ EXT TEMP 2X5DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of AFBR-5903AZ

• Data Rate: 100Mbps
• Wavelength: 1300nm
• Applications: General Purpose
• Voltage - Supply: 3.3V
• Connector Type: MTRJ
• Mounting Type: Through Hole
• Function: Implement FDDI and ATM at the 100 Mbps/125 MBd rate
• Product: Transceiver
• Maximum Rise Time: 3 ns/2.2 ns
• Maximum Fall Time: 3 ns/2.2 ns
• Pulse Width Distortion: 0.12 ns/0.2 ns
• Maximum Output Current: 50 mA
• Operating Supply Voltage: 3.135 V to 3.465 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: DIP With Connector
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: Multimode Glass
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 516-1992

Transmitter Sections
The transmitter section of the AFBR-5903Z utilizes a 1300
nm Surface Emitting InGaAsP LED. This LED is packaged
in the optical subassembly portion of the transmitter
section. It is driven by a custom silicon IC which converts
differential PECL logic signals, ECL referenced (shifted) to
a +3.3 V supply, into an analog LED drive current.
Receiver Sections
The receiver section of the AFBR-5903Z utilizes an InGaAs
PIN photodiode coupled to a custom silicon transimped-
ance preamplifier IC. It is packaged in the optical sub-
assembly portion of the receiver.
This PIN/preamplifier combination is coupled to a custom
quantizer IC which provides the final pulse shaping for
the logic output and the Signal Detect function. The Data
output is differential. The Signal Detect output is single-
ended. Both Data and Signal Detect outputs are PECL
compatible, ECL referenced (shifted) to a +3.3 V power
supply. The receiver outputs, Data Out and Data Out Bar,
are squelched at Signal Detect Deassert. That is, when the
light input power decreases to a typical -38 dBm or less,
the Signal Detect Deasserts, i.e. the Signal Detect output
goes to a PECL low state. This forces the receiver outputs,
Data Out and Data Out Bar to go to steady PECL levels
High and Low respectively.
Figure 1. Block Diagram.
DATA IN
DATA IN
2
DATA OUT
DATA OUT
SIGNAL
DETECT
LED DRIVER IC
QUANTIZER IC
T
R
X
X
SUPPLY
SUPPLY
R
T
X
X
GROUND
GROUND
Package
The overall package concept for the Avago Technologies
transceiver consists of the following basic elements; two
optical subassemblies, an electrical subassembly and the
housing as illustrated in Figure 1.
The p ackage o utline d rawing a nd p in o ut a re s hown i n F igures
2 and 3. The details of this package outline and pin out are
compliant with the multisource definition of the 2 x 5 DIP.
The l ow p rofile o f t he A vago T echnologies t ransceiver d esign
complies with the maximum height allowed for the MT-RJ
connector over the entire length of the package.
The optical subassemblies utilize a high-volume assembly
process together with low-cost lens elements which result
in a cost-effective building block.
The electrical subassembly consists of a high volume mul-
tilayer printed circuit board on which the IC and various
surface-mounted passive circuit elements are attached.
The receiver section includes an internal shield for the elec-
trical and optical subassemblies to ensure high immunity to
external EMI fields.
The o uter h ousing i s e lectrically c onductive and is at receiver
signal ground potential. The MT-RJ port is molded of filled
nonconductive plastic to provide mechanical strength
and electrical isolation. The solder posts of the Avago
Technologies design are isolated from the internal circuit
of the transceiver.
The transceiver is attached to a printed circuit board with
the ten signal pins and the two solder posts which exit
the bottom of the housing. The two solder posts provide
the primary mechanical strength to withstand the loads
imposed on the transceiver by mating with the MT-RJ
connectored fiber cables.
PIN PHOTODIODE
PRE-AMPLIFIER
SUBASSEMBLY
LED OPTICAL
SUBASSEMBLY
MT-RJ
RECEPTACLE