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LG1627BXC Datasheet

  • LG1627BXC

  • LG1627BXC Clocked Laser Driver

  • 10頁(yè)

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Data Sheet
May 2001
LG1627BXC Clocked Laser Driver
Features
s
s
s
s
Functional Description
The LG1627BXC is a gallium arsenide (GaAs) laser
diode driver to be used with direct modulated laser
diodes in high-speed non-return-to-zero (NRZ) trans-
mission systems. The device is made in a high-
performance 0.9 碌m gate GaAs hetero-junction FET
technology that utilizes high-density MIM capacitors,
airbridge interconnect, and NiCr film precision resis-
tors. The driver includes differential data and clock
inputs. The high-output, low overshoot drive current
and prebias can be set separately. Data retiming is
accomplished by the internal flip-flop, minimizing
jitter on the data. Clocking can be disabled for data
feedthrough. A pulse-width control enables the user
to compensate for laser turn-on delay. A 2.5 V band-
gap reference is required for stable operation over
temperature and varying power supply voltage.
High data-rate clocked laser diode driver
Clock disable mode for data feedthrough
Adjustable high output current
Operation up to 3 Gbits/s
Applications
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s
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SONET/SDH transmission systems
SONET/SDH test equipment
Optical transmitters
Functional Diagram
GND
BG2P5
MK
V
TH
V
IN
V
IN
CLK
CLK
CLK_E
MOD_E
PWN
PWP
5-6549(F).b
MK
V
PRE
I
OUT-PRE
LG1627BXC
I
OUT
V
MOD
V
SS3
V
SS2
V
SS1
Figure 1. Functional Diagram

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