Fiber Optics
Bi-Directional Pigtail SFF Transceiver
155 Mbit/s, 1310 nm Tx / 1550 nm Rx
V23870-Ax131-xx00
V23870-Ax132-xx00
This BIDI
®
-TRX is a bi-directional Small Form Factor
(SFF) transceiver designed for full-duplex
communication over a single fiber. The single fiber
concept saves overall system costs by eliminating
one fiber, allowing for doubling of capacity without
installing new fibers, and simplifying fiber
management.
Features
•
•
•
•
•
•
•
•
•
Single fiber solution saving overall system cost
Suitable for data rates up to 155 Mbit/s
Single mode fiber pigtail with different connector options
Industry standard 2x5 SFF MSA footprint
Integrated WDM filter for dual wavelength Tx/Rx operation at 1310/1550 nm
1310 nm FP laser diode transmitter with laser driver
1550 nm PIN diode receiver with pre- and post-amplifier
3.3 V power supply
Class 1 laser product
Applications
• Access Networks, e.g. media converters for Fiber-In-The-Loop (FITL), Point-to-Point
(P2P), and Passive Optical Networks (PON)
• Inter-system communication between Servers, Switches, Routers, Add-Drop-
Multiplexers, Cross Connects, etc. in Central Offices, Data Storage Networks, High
Speed Server Farms, etc.
• Digital Video and Closed Circuit Television (CCTV) applications for Transport, Traffic,
and Security
For ordering information see next page.
Data Sheet
1
2003-06-13
V23870-Ax131-xx00
V23870-Ax132-xx00
Ordering Information
Ordering Information
V23870 - Ax13x - xx00
Average Launched Power:
1: -8 ... -14 dBm
3: -3 ... -9 dBm
Temperature Range:
1: 0 ... +70 °C(@ Ambient)
2: -40 ... +85 °C (@ Case)
Connector:
A: Pigtail without Connector
B: SC/PC 0°
C: SC/APC 8°
F: MU
H: MU-J
K: LC
Coupling:
(Tx/Rx, Signal Detect)
1: AC/AC, PECL SD
2: DC/DC, PECL SD
5: AC/AC, TTL SD
6: DC/DC, TTL SD
Pin Configuration
Figure1
Data Sheet
2
2003-06-13
V23870-Ax131-xx00
V23870-Ax132-xx00
Pin Configuration
Pin Description
Pin
No.
1
Symbol
Level/Logic Function
N/A
Receiver
Signal
Ground
Receiver
Power
Supply
Signal
Detect
Normal operation: Logic 1 output,
represents that light is present at
receiver input.
Fault condition: Logic 0 output.
Recommended termination of 510
Ω
to
V
EEr
for PECL.
Description
V
EEr
2
V
CCr
N/A
3
SD
see options
on Page 2
4
RD–
PECL
Received
Data Out
Not
Received
Data Out
Transmitter power supply
Transmitter signal ground
Transmitter
Disable/
Enable
Transmit
Data
Transmit
Data Not
Mounting
Studs
Housing
Leads
A low/open signal switches
the laser on.
A high signal switches the laser off.
Transmitter Data In
Transmitter Data In Not
Mounting Studs are provided for
transceiver mechanical attachment to
the circuit board.
The transceiver Housing Leads are
provided for additional signal
grounding. The holes in the circuit
board must be included and be tied to
signal ground.
5
6
7
8
RD+
PECL
N/A
N/A
TTL Input
V
CCt
V
EEt
TxDis
9
10
MS1
MS2
T1
T2
T3
T4
TD+
TD–
MS
PECL
PECL
N/A
HL
N/A
Data Sheet
3
2003-06-13
V23870-Ax131-xx00
V23870-Ax132-xx00
Description
Description
The Infineon BIDI
®
transceiver - part of Infineon’s Small Form Factor transceiver family -
is based on the Physical Medium Depend (PMD) sublayer and baseband medium.
Infineon's BIDI-TRX is designed to handle multiple data rates and can be designed into
Fast Ethernet, FDDI, Fiber Channel, ATM-155, SDH STM-1, SONET OC-3, CCTV and
other applications as well as different FTTx applications according to the 100 Mbps EFM
standard (IEEE 802.3ah). It is suitable for both, short haul applications and distances of
20 km and beyond.
The appropriate fiber optic cable is the 9µm singlemode fiber pigtail with different
connector options.
The Infineon BIDI transceiver is a single unit comprised of a transmitter, a receiver, WDM
filter, and a singlemode fiber pigtail. This design frees the customer from many alignment
and PC board layout concerns.
This transceiver operates at 155 Mbit/s from a single power supply (+3.3 V). The full
differential data inputs and outputs are PECL and LVPECL compatible.
Functional Description of 2x5 Pin Row Transceiver
This transceiver is designed to transmit and receive serial data via a single mode cable.
Figure2
Data Sheet
Functional Diagram
4
2003-06-13
V23870-Ax131-xx00
V23870-Ax132-xx00
Description
The receiver component converts the optical serial data into PECL compatible electrical
data (RD+ and RD-). The Signal Detect (SD, active high) shows whether an optical
signal is present.
The transmitter converts PECL compatible electrical serial data (TD+ and TD-) into
optical serial data. Data lines are differentially 100 Ohm terminated.
The transmitter contains a laser driver circuit that drives the modulation and bias current
of the laser diode. The currents are controlled by a power control circuit to guarantee
constant output power of the laser over temperature and aging.
The power control uses the output of the monitor PIN diode (mechanically built into the
laser coupling unit) as a controlling signal, to prevent the laser power from exceeding the
operating limits.
Single fault condition is ensured by means of an integrated automatic shutdown circuit
that disables the laser when it detects laser fault to guarantee the laser Eye Safety.
The transceiver contains a supervisory circuit to control the power supply. This circuit
makes an internal reset signal whenever the supply voltage drops below the reset
threshold. It keeps the reset signal active for at least 140 milliseconds after the voltage
has risen above the reset threshold. During this time the laser is inactive.
The laser can be disabled by the TxDis input.
Data Sheet
5
2003-06-13
