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MAX3867 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX3867
Description  3.3V, 2.5Gbps SDH/SONET Laser Driver with Automatic Power Control
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
Logo MAXIM - Maxim Integrated Products

MAX3867 Datasheet(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX3867 is a complete, single +3.3V laser driver
for SDH/SONET applications up to 2.5Gbps. The
device accepts differential PECL data and clock inputs
and provides bias and modulation currents for driving a
laser. The synchronizing input latch can be bypassed if
a clock signal is not available.
An automatic power control (APC) feedback loop is
incorporated to maintain a constant average optical
power over temperature and lifetime. The wide modula-
tion current range of 5mA to 60mA and bias current of
1mA to 100mA are easy to program, making this prod-
uct ideal for use in various SDH/SONET applications.
The MAX3867 also provides enable control, a program-
mable slow-start circuit to set the laser turn-on delay,
and a failure-monitor output to indicate when the APC
loop is unable to maintain the average optical power.
The MAX3867 is available in a small 48-pin TQFP pack-
age as well as dice.
Applications
SONET/SDH Transmission Systems
Add/Drop Multiplexers
Digital Cross-Connects
Section Regenerators
2.5Gbps Optical Transmitters
Features
o Single +3.3V or +5V Power Supply
o 62mA Supply Current at +3.3V
o Programmable Modulation Current from
5mA to 60mA
o Programmable Bias Current from 1mA to 100mA
o Rise/Fall Time < 90ps
o Automatic Average Power Control with Failure
Monitor
o Complies with ANSI, ITU, and Bellcore
SDH/SONET Specifications
o Enable Control
*
Dice are designed to operate over this range, but are tested and
guaranteed at TA = +25°C only. Contact factory for availability.
Ordering Information
+3.3V, 2.5Gbps SDH/SONET Laser Driver
with Automatic Power Control
________________________________________________________________
Maxim Integrated Products
1
EVALUATION
KIT
AVAILABLE
124
124
SERIALIZER
WITH
CLOCK GEN.
124
20
LD
25
+3.3V
+3.3V
0.056
µF
1000pF
CLK-
CLK+
DATA-
DATA+
*FERRITE
BEAD
OUT+
BIAS
MD
OUT-
124
84.5
84.5
84.5
84.5
MAX3867
MAX3890
Typical Operating Circuit
19-4769; Rev 0a; 9/98
Pin Configuration appears at end of data sheet.
PART
MAX3867ECM
MAX3867E/D
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
48 TQFP
Dice*
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.


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