FOA2322A Datasheet, PDF (13/37 Pages) Infineon Technologies AG – 3.2 Gbi t /s Laser Driver IC for Telecom and Datacom Applications

FOA2322A
Electrical Characteristics
Table 3
Characteristics and Operating Conditions (cont’d)
SP Parameter
Sym-
bol
min.
Limit Values
typ.
max.
Unit Condi-
tion
Laser Power Control
30 Bias Current
31 Start Bias Current
32 Bias Current at Laser
Shut Down
33 Output Voltage Range
IBIAS
34 Power Monitor Current
35 Output Voltage Range
MPOUT
36 Resistor Range RPOUT
37 Output Voltage Range
RPOUT
38 Internal cutoff frequency
of bias controller
39 Cutoff frequency of bias
controller with external
C_BIAS
40 Conversion gain of bias
generator
I_IBIASmax 0
I_IBIASmin –
I_IBIASSD –
V_IBIAS
0.5
I_MPOUT 0
V_MPOUT
R_POUT
V_RPOUT
V_RPOUT +
0.5
2.4
0
f_BIAS
f_BIAS
G_BIAS
23
(44 µs +
306 kΩ ×
C_BIAS)^-1
–
–
–
–
–
V_MD
R_POUT
–
–
V_MD
37
(27 µs +
204 kΩ ×
C_BIAS)^-1
100
80
mA –
500
µA –
500
µA –
V_CC
1
V
–
mA ¹⁶⁾
V_CC
V
–
Open Input kΩ –
V_CC - 1.2 V
–
62
kHz ¹⁷⁾
(16 µs +
131 kΩ ×
C_BIAS)^-1
–
15)17)
mA/V –
Laser Supervising Circuit
41 MD Failure Voltage High
42 MD Failure Voltage Low
43 MD Range without Failure
Recognition
44 Internal Failure
Recognition Time
t_FDEL
45 Additional Failure
Recognition Time by
external C_FDEL
t_FDEL
–
V_MDnom + V_MDnom +
1.5 dB
2 dB
V_MDnom - V_MDnom - –
2 dB
1.55 dB
V_MDnom - –
1.2 dB
V_MDnom + V
1.2 dB
38
60
86
µs
C_FDEL × C_FDEL × C_FDEL ×
0.7 µs/pF 1.0 µs/pF 1.3 µs/pF
18)
18)
19)
17)20)
15)17)20)
Preliminary Data Sheet
9
2001-05