HFBR-1119TZ Datasheet, PDF (3/10 Pages) AVAGO TECHNOLOGIES LIMITED – Fiber Optic Transmitter and Receiver Data Links for 266 MBd

OPTICAL PORT
NC
GND
V_CC
V_CC
GND
DATA
DATA
NC
9
8
10
7
11
6
12
5
13
4
14
3
15
2
16
1
NC
NO PIN
GND
GND
GND
GND
V_BB
NC
TRANSMITTER
Figure 3. Pinout drawing.
OPTICAL PORT
NC
NO PIN
GND
GND
GND
SD
SD
NO PIN
9
8
10
7
11
6
12
5
13
4
14
3
15
2
16
1
NC
GND
V_CC
V_CC
V_CC
DATA
DATA
NC
8
7
6
5
62.5/125 µm
4
3
2
50/125 µm
1
0
0
0.5
1
1.5
2
FIBER OPTIC CABLE LENGTH – km
RECEIVER
Figure 4. Optical power budget at BOL vs. fiber optic cable length.
Each transmitter and receiver package includes an internal
shield for the electrical subassembly to ensure low EMI
emissions and high immunity to external EMI fields.
The outer housing, including the ST* port, is molded of
filled, non-conductive plastic to provide mechanical
strength and electrical isolation. For other port
styles, please contact your Avago Technologies Sales
Representative.
Each data-link module is attached to a printed circuit
board via the 16-pin DIP interface. Pins 8 and 9 provide
mechanical strength for these plastic-port devices and
will provide port-ground for forthcoming metal-port
modules.
Application Information
The Applications Engineering group of the Fiber Optics
Product Division is available to assist you with the technical
understanding and design tradeoffs associated with these
transmitter and receiver modules. You can contact them
through your Avago Technologies sales representative.
The following information is provided to answer some of
the most common questions about the use of these parts.
Transmitter and Receiver Optical Power Budget versus
Link Length
The Optical Power Budget (OPB) is the available optical
power for a fiber-optic link to accommodate fiber cable
losses plus losses due to in-line connectors, splices,
optical switches, and to provide margin for link aging and
unplanned losses due to cable plant reconfiguration or
repair.
Figure 4 illustrates the predicted OPB associated with
the transmitter and receiver specified in this data sheet
at the Beginning of Life (BOL). This curve represents the
attenuation and chromatic plus modal dispersion losses
associated with 62.5/125 m and 50/125 m fiber cables
only. The area under the curve represents the remaining
OPB at any link length, which is available for overcoming
non-fiber cable related losses.
Avago LED technology has produced 1300 nm LED devices
with lower aging characteristics than normally associated
with these technologies in the industry. The industry con-
vention is 1.5 dB aging for 1300 nm LEDs; however, Avago
1300 nm LEDs will experience less than 1 dB of aging
over normal commercial equipment mission-life periods.
Contact your Avago Technologies sales representative for
additional details.
Figure 4 was generated with an Avago fiber-optic link
model containing the current industry conventions for
fiber cable specifications and Fibre Channel optical param-
eters. These parameters are reflected in the guaranteed
performance of the transmitter and receiver specifications
in this data sheet. This same model has been used exten-
sively in the ANSI and IEEE committees, including the ANSI
X3T9.5 committee, to establish the optical performance
requirements for various fiber-optic interface standards.
The cable parameters used come from the ISO/IEC JTC1/
SC 25/WG3 Generic Cabling for Customer Premises per
DIS 11801 document and the EIA/TIA-568-A Commer-
cial Building Telecommunications Cabling Standard per
SP-2840.
* ST is a registered trademark of AT&T Lightguide Cable Connectors.
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