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MAX3869 fiches techniques PDF

Maxim Integrated - +3.3V / 2.5Gbps SDH/SONET Laser Driver with Current Monitors and APC

Numéro de référence MAX3869
Description +3.3V / 2.5Gbps SDH/SONET Laser Driver with Current Monitors and APC
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX3869 fiche technique
19-1570; Rev 0; 12/99
EVAALVUAAILTAIOBNLEKIT
+3.3V, 2.5Gbps SDH/SONET Laser Driver
with Current Monitors and APC
General Description
The MAX3869 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. A synchronizing input latch can be used (if a
clock signal is available) to reduce jitter.
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 MAX3869 also provides enable control, two current
monitors that are directly proportional to the laser bias
and modulation currents, and a failure-monitor output to
indicate when the APC loop is unable to maintain the
average optical power. The MAX3869 is available in a
small 32-pin TQFP package 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 64mA Supply Current at +3.3V
o Programmable Bias Current from 1mA to 100mA
o Programmable Modulation Current from
5mA to 60mA
o Bias Current and Modulation Current Monitors
o 87ps Rise/Fall Time
o Automatic Average Power Control with Failure
Monitor
o Complies with ANSI, ITU, and Bellcore
SDH/SONET Specifications
o Enable Control
Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX3869EHJ
-40°C to +85°C 32 TQFP-EP*
MAX3869E/D
-40°C to +85°C Dice**
*EP = Exposed Paddle.
**Dice are designed to operate over this range, but are tested and
guaranteed at TA = +25°C only. Contact factory for availability.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.3V
+3.3V
124124124124
MAX3890
SERIALIZER
WITH
CLOCK GEN.
84.584.584.584.5
DATA+
DATA-
CLK+ MAX3869
CLK-
25
OUT-
OUT+
BIAS
MD
FERRITE
BEAD
0.01µF
LD
23
0.056µF
BIASMON
MODMON
1000pF
+3.3V
________________________________________________________________ Maxim Integrated Products 1
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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