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Agere Systems - LG1625AXF Laser Driver

Numéro de référence TF1006A
Description LG1625AXF Laser Driver
Fabricant Agere Systems 
Logo Agere Systems 





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TF1006A fiche technique
Data Sheet
June 1999
Features
s High data-rate laser diode/LED driver
s Adjustable output current
s Operation up to 3 Gbits/s
s Single –5.2 V power supply
s 90 ps rise and fall times
Applications
s SONET/SDH transmission systems
s SONET/SDH test equipment
s Optical transmitters
LG1625AXF Laser Driver
Description
The LG1625AXF is a gallium-arsenide (GaAs) laser
diode driver to be used with direct modulated laser
diodes in high-speed nonreturn-to-zero (NRZ) trans-
mission systems. The device is made in a high-per-
formance 0.9 µm gate GaAs heterojunction FET
technology that utilizes high-density MIM capacitors,
airbridge interconnect, and NiCr film precision resis-
tors.
The device contains three cascaded stages, oper-
ates with a single –5.2 V power supply and accepts
ECL level inputs. Voltages control the modulated out-
put current and laser prebias current. The
LG1625AXF is available in a 24-lead hermetic, gull-
wing package.
A test fixture (TF1006A) with SMA connectors is
available to allow quick evaluation of the LG1625AXF.
GND
MK
MK
VPRE
VIN LG1625AXF
VTH
VMOD
VSS3
VSS2
VSS1
IOUT
Figure 1. Functional Diagram
5-7865(F)

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