3
Figure 2. Pin Out Diagram
TRANSMITTER DATA IN BAR
TRANSMITTER DATA IN
NC
TRANSMITTER SIGNAL GROUND
TRANSMITTER POWER SUPPLY
RX TX
o
o
o
o
o
1
2
3
4
5
o
o
o
o
o
10
9
8
7
6
RECEIVER SIGNAL GROUND
RECEIVER POWER SUPPLY
SIGNAL DETECT
RECEIVER DATA OUT BAR
RECEIVER DATA OUT
Top
View
Mounting
Studs/Solder
Posts
Pin 7 Transmitter Signal Ground V
EE
TX:
Directly connect this pin to the transmitter ground
plane.
Pin 8 NC:
No connection.
Pin 9 Transmitter Data In TD+:
No internal terminations are provided. See recom-
mended circuit schematic.
Pin 10 Transmitter Data In Bar TD-:
No internal terminations are provided. See recom-
mended circuit schematic.
Mounting Studs/Solder Posts
The mounting studs are provided for transceiver me-
chanical attachment to the circuit board. It is rec-
ommended that the holes in the circuit board be
connected to chassis ground.
Application Information
The Applications Engineering group is available to assist
you with the technical understanding and design trade-
os associated with these transceivers. You can contact
them through your Avago sales representative.
The following information is provided to answer some
of the most common questions about the use of these
parts.
Transceiver Optical Power Budget versus Link Length
Optical Power Budget (OPB) is the available optical
power for a ber optic link to accommodate ber 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 recongura-
tion or repair.
Avago LED technology has produced 1300 nm LED
devices with lower aging characteristics than normally
associated with these technologies in the industry.
The industry convention is 1.5 dB aging for 1300 nm
LEDs. The 1300 nm Avago LEDs are specied to expe-
rience less than 1 dB of aging over normal commercial
equipment mission life periods. Contact your Avago
sales representative for additional details.
Pin Descriptions:
Pin 1 Receiver Signal Ground V
EE
RX:
Directly connect this pin to the receiver ground plane.
Pin 2 Receiver Power Supply V
CC
RX:
Provide +3.3 V dc via the recommended receiver power
supply lter circuit. Locate the power supply lter
circuit as close as possible to the V
CC
RX pin.
Pin 3 Signal Detect SD:
Normal optical input levels to the receiver result in a
logic “1” output.
Low optical input levels to the receiver result in a logic
“0” output.
This Signal Detect output can be used to drive a PECL
input on an upstream circuit, such as Signal Detect
input of Loss of Signal-Bar.
Pin 4 Receiver Data Out Bar RD-:
No internal terminations are provided. See recom-
mended circuit schematic.
Pin 5 Receiver Data Out RD+:
No internal terminations are provided. See recom-
mended circuit schematic.
Pin 6 Transmitter Power Supply V
CC
TX:
Provide +3.3 V dc via the recommended transmitter
power supply lter circuit. Locate the power supply
lter circuit as close as possible to the V
CC
TX pin.
