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STX448DS4I000P3

Description
Transmitter
File Size358KB,4 Pages
ManufacturerOplink(Molex)
Websitehttp://www.oplink.com
Download Datasheet View All

STX448DS4I000P3 Overview

Transmitter

OC-48/STM-16 Transmitter
STX48 Series
Product Description
The STX48 modules are laser transmitters designed to meet or exceed
the SONET/SDH optical interface requirements at OC-48/STM-16 (2.5
Gb/s) data rate. Many performance versions are available which are fully
compliant with Short Reach, Intermediate Reach and Long Reach specifi-
cations at 1310 nm or 1550 nm wavelength. The Short Reach version uses
uncooled Fabry Perot lasers while the Intermediate Reach version uses
uncooled DFB lasers. For the Long Reach version, uncooled DFB lasers
with internal optical isolators are used. All modules satisfy Class I Laser
Safety requirements in accordance with the US FDA/CDRH and interna-
tional IEC-825 standards.
The transmitter incorporates an Automatic Power Control (APC) circuit to
maintain the optical output power at a constant level against variations
in ambient temperature and device aging. It also features a Mode Selec-
tor input pin which selects between clocked and non-clocked operation.
In the clocked operation mode, the input DATA is resynchronized by the
input CLOCK before driving the laser diode in order to reduce output jit-
ter to a minimum. A Transmitter Disable control input is also provided.
Both the laser bias current and back-facet light output can be monitored
as well.
All STX48 transmitter modules are available in two power supply options:
single +5V and single -5 V. The DATA and CLOCK interface can either be
direct PECL/ECL or via AC coupling. The operating temperature range is
-40°C to +85°C for the Short Reach and Intermediate Reach 1310 nm ver-
sion and 0°C to +70°C for the Long Reach version. All modules are housed
in a 24-pin dual-in-line metal package with a single mode fiber pigtail,
which is terminated with ST, FC or SC connector.
Features
Fully compliant with SONET/SDH OC-48/ STM-16
(2.5 Gb/s) specifications
Long Reach 1310 nm & 1550 nm as well as
Intermediate Reach and Short Reach
Eye Safe (Class I Laser Safety)
Mode Selector switch between Clocked or Non-
clocked operation
-40°C to +85°C Operating Temperature
(Intermediate Reach and Short Reach)
24-pin DIP metal package
FC, ST, SC-connectorized fiber pigtails
Differential PECL DATA & CLOCK interface
Single +5 V and - 5 V supply option
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Case Temperature
1
Supply Voltage
Input Voltage
Lead Soldering Temperature & Time
“I” option (SR & IR only)
“H” option
Symbol
T
ST
V
OP
V
CC
- V
EE
V
IN
- V
EE
-
Minimum
- 40
- 40
0
0
V
EE
-
Maximum
+ 85
+ 85
+ 70
+ 6.0
V
CC
- V
EE
260°C, 10 sec
Units
°C
°C
V
V
R04.2008.04.30
Oplink Communications, Inc.
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