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)： 28/37頁(yè)
文件大?。?/td> 542K
代理商： FOA2322A
FOA2322A
Pin Description
Preliminary Data Sheet
24
2001-05
RST
Logic Input
High active reset input. This input resets the LF
indication if present. Further the laser diode is held
within shut down mode if this signal is at low level.
For constant laser diode enable this signal can be
tied to
V
EE
.
A low level at LEN enables the laser diode, a high
level disables the laser diode. For constant enable
this input can be tied to
V
EE
.
Fault Indicator. A high level is generated whenever
a fault situation is detected by the supervisor
circuit. Fault situations are laser power failures
indicated by MD input voltage deviation from
V
MDnom
. Let open if not used.
With an external capacitor at CFDEL to
V
EE
the
laser fault detection delay time can be increased.
This means if a constant fault condition is present
a laser fault indication will be generated and the
laser will be shut down after this delay time. The
laser safety circuit can be switched off if CFDEL is
connected to
V
CC
.
With an external capacitor at COSC to
V
EE
the
piloton frequency can be decreased (mode 2).
COSC determines the power on delay.
A high level at MODE sets the modulation control
circuit to mode 1 (using temperature compensation
circuit). A low level at MODE sets the modulation
control circuit to mode 2 (using modulation control
by pilot signal).
An external resistor at RMOD to
V
EE
sets the
modulation current level (in mode 1). Let open if
mode 2 is used.
An external resistor at RTC to
V
EE
sets the
modulation current temperature coefficient. The
temperature information is derived from chip
junction temperature (in mode 1). Let open if
mode 2 is used.
LEN
Logic Input
LF
Logic Output
CFDEL
Control
COSC
Control
MODE
Logic Input
RMOD
Control
RTC
Control
Table 6
Signal Name Function
Pin Definitions and Functions
(cont
’
d)
Explanation
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