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參數(shù)資料
| 型號： | GD16521-D |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.5 GBIT/S RE TIMING LASER DRIVER |
| 中文描述： | 2.5 Gbit / s的稀土激光驅動時序 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 166K |
| 代理商： | GD16521-D |
General Description
The GD16521 is a high performance low
power 2.5 Gbit/s Laser Driver with
optional on chip re-timing of data.
The GD16521 is designed to meet and
exceed ITU-T STM-16 and SONET
OC-48 fiberoptic communication systems
requirements.
The GD16521 is designed to sink a Mod-
ulation Current into the IM pin and a
Pre-Bias Current into the IB pin. The
Modulation Current is adjustable up to
50 mA and the Pre-Bias Current is ad-
justable up to 100 mA. The device fea-
tures two control loops for stabilizing the
laser diode operating conditions. An au-
tomatic optical power control loop main-
tains a constant average optical power
out of the laser diode, independent of
changes in the threshold current of the
laser diode. A modulation current control
loop maintains a constant modulation
current for the laser diode, or alterna-
tively maintains a constant extinction ra-
tio of the laser diode.
Re-timing of the data signal connected to
the pins SDIP/SDIN is made by means of
a DFF-clocked by an external clock sig-
nal at the data rate fed to the pins SCIP/
SCIN.
The GD16521 requires a single +3.3 V
supply.
The circuit is available as:
48 lead 7 × 7 mm TQFP power
enhanced plastic package
die.
an Intel company
Data Sheet Rev.: 11
Preliminary
Features
Differential CML data and clock
inputs with internal 50
nation.
load termi-
Selectable on chip retiming-FF.
Output modulation current pulse duty
width adjustable
(Compensates for LD emission delay)
Modulation/Bias current monitor
output.
Modulation/Bias current shutdown
input.
Single supply operation: +3.3 V.
Power dissipation: 410 mW (typ.).
Available as:
–
48 lead 7 × 7 mm TQFP power
enhanced plastic package
–
die
Applications
Tele Communication:
–
SDH STM-16 modules
–
SONET OC-48 modules
Data Communication.
Electro Absorption laser driver.
Direct Modulation laser driver.
2.5 Gbit/s
Re-timing
Laser Driver
GD16521
PD
AR
IB
IBM
IM
DUTY
FFSET
SHDW
MARKN
SDlP
SDlN
TDlN
TDlP
SClP
SClN
TClP
TClN
IMC
IMM
IMSET
MARKP
1/20
DFF
SEL
Duty
Adjust
Mark/Space
Monitor
1/20
IBSET
OPSET
VCC
VCCCONT
VCCCM
VCCR
VEE
VEER
MTJ
IMB
-
+
+
-
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