FOA2322A Datasheet, PDF (23/37 Pages) Infineon Technologies AG – 3.2 Gbi t /s Laser Driver IC for Telecom and Datacom Applications

FOA2322A
Electrical Characteristics
2.6
Data / Clock Input Stage
Data and clock inputs are terminated with 100 Ω and are connected to a V_BB reference
by resistors R₁/R₂. (V_BB for Clock input is V_BBC, V_BB for Data input is V_BBD.) This easily
provides the input reference voltage at AC coupling. A schematic of the input stage is
shown below:
P
R_IN
N
R₁
R₂
R₁, R₂ = 5 kΩ
R_IN = 100 Ω ±20%
Reference
Generator
V_BB
ITS11334
Figure 9 Data/Clock Input Stage
2.7
Timing of Clock and Data
Daten D/DN
t_SETUP
t_HOLD
50%
Clock CLK
Figure 10 Timing of Clock and Data
Preliminary Data Sheet
19
50%
ITT11335
2001-05