參數(shù)資料
型號(hào)： FOA2322A
廠商： INFINEON TECHNOLOGIES AG
英文描述： 3.2 Gbi t /s Laser Driver IC for Telecom and Datacom Applications
中文描述： 3.2陸基攔截噸/ s的電信和數(shù)據(jù)通信應(yīng)用激光驅(qū)動(dòng)器集成電路
文件頁(yè)數(shù)： 7/37頁(yè)
文件大?。?/td> 542K
代理商： FOA2322A
FOA2322A
Overview
Preliminary Data Sheet
3
2001-05
Mode 2: The modulation current is controlled by using a low frequency pilot signal. The
controller cutoff frequency is adjustable by external capacitor (
C
MOD
). Mode 2 is suitable
for data rates 1.25 Gbit/s (depending on laser diode).
There is an option for using data input latch.
Input Signal Monitor
An input signal monitor circuit delivers a logic signal HWA and an internal signal which
is used for laser disabling if data input is constantly high or low.
Bias Control / Bias Generator
The bias controller controls the LD optical output power by adjusting the bias current.
The controller cutoff frequency is adjustable by external capacitor (
C
BIAS
). A min. cutoff
frequency is integrated. The laser bias current will start at < 500
μ
A after laser enable.
Laser Supervisor /
V
CC
Supervisor
The laser supervisor circuit monitors the laser output power by the means of monitor
diode feedback. The voltage generated by monitor diode circuit is compared to a
reference. If the input voltage deviates more than
±
2 dB (optical power
±
1 dB) from this
reference the laser diode is switched off and a fault indication is generated. The
V
CC
supervisor monitors the circuit power supply and switches off the laser if the
V
CC
level is
below the reset threshold. It is keeping the laser output down for the adjusted delay time
(power on delay) after
V
CC
has risen above the
V
CC
reset threshold.
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