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)： 16/37頁(yè)
文件大?。?/td> 542K
代理商： FOA2322A
FOA2322A
Electrical Characteristics
Preliminary Data Sheet
12
2001-05
74
Pilot current amplitude on
bias current (default)
ab
PILOT
–
5.05
–
%
26)
75
Cutoff frequency of
modulation controller with
external
C
MOD
f
MOD
(306 k
×
C
MOD
)
-1
(204 k
×
C
MOD
)
-1
(131 k
×
C
MOD
)
-1
15)17)
1)
Measured into 25
.
2)
The bias-, modulation-, the LF-, HWA- and MPOUT- output currents are not included.
3)
The typical supply current is defined for driving a laser with about 20 mA bias current and about 20 mA
modulation current and a IC junction temperature of about 50
°
C and a
V
CC
of 5 V. The maximum supply
current is defined for driving the upper limits of bias current and modulation current with worst case junction
temperature and with a
V
CC
of 5.5 V (
V
CC
=
V
CCA
=
V
CCD
).
4)
This describes the AC modulation current (the DC component is the overall offset current). AC modulation
current is drawn by O at
V
D
>
V
DN
, it is drawn by ON at
V
D
<
V
DN
.
I
OH
refers to drawn modulation current
(AC + DC).
I
OL
refers to an inactive current output (DC current only).
5)
See
Table 2
for operating conditions junction temperature.
6)
Inactive current output (see also
4)
).
7)
Modulation current when the laser diode is disabled.
8)
Valid for
V
CC
=
V
CCA
=
V
CCD
= 5 V. It is possible to increase the output voltage range for the
V
CC
range of
5 V
±
0.5 V of about 0.85 V by using the Pad
V
CCD2
instead of
V
CCD
(see
Figure 14
). The specified limits for
data and clock inputs are valid for
V
CCD
.
9)
Adjustment of programmable parameter by resistor value within this range (see
Chapter 2.4
).
10)
Adjusting the modulation current by
R
MOD
notice that the decreasing of
R
MOD
will increase the modulation
current.
R
MOD
in combination with
R
TC
has to be adjusted that the modulation current is smaller than 50 mA
or 75 mA respectively over specified temperature range. If
R
MOD
-Pad is not connected (open input) there will
be no modulation current at the output O/ON.
11)
Modulation current adaptation within junction temperature range. Low junction temperature represents a low
additional modulation current. High junction temperature represents a high additional modulation current. If
R
TC
-Pad is not connected there will be no noteworthy modulation current adaptation.
12)
Data/clock inputs are internally connected to
V
BBD
/
V
BBC
by resistor
R
1
/
R
2
with a differential termination by
R
IN
.
See data input stage description (see
Figure 9
).
13)
The resistance is guaranteed for junction temperature 25
°
C.
Table 3
SP Parameter
Characteristics and Operating Conditions
(cont
’
d)
Sym-
bol
min.
Limit Values
typ.
Unit
Condi-
tion
max.
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