GD16521 Datasheet, PDF (11/13 Pages) List of Unclassifed Manufacturers – 2.5 GBIT/S RE TIMING LASER DRIVER

AC Characteristics
T_CASE = -40 °C to +95 °C, appropriate heat sinking may be required, for package parts. Device is AC-tested in the temperature
range 0 °C to 85 °C, specifications from -40 °C to +95 °C are guaranteed by design.
T_{DIE BACK} = -30 °C to +100 °C, appropriate heat sinking may be required, for dies. Die is not AC-tested. Specifications are
guaranteed by design.
Figure 12.LDD Output Definition.
Symbol:
f_MAX OUT
J_pp IM
t_RISE IM
t_FALL IM
D_range
t_S
t_H
Characteristic:
Data Output Frequency
IM Output Pattern Jitter
IM Output Rise Time (20 - 80 %)
IM Output Fall Time (80 - 20 %)
Duty Adjustable Range
Data Set-up Time
Data Hold Time
Conditions:
Note 1, 2
Note 1
Note 1
MIN.:
2500
0
60
60
TYP.:
MAX.:
0.06
100
100
+20
UNIT:
Mbit/s
UI_PP
ps
ps
%
ps
ps
Target Specifications for Optical Output
Symbol:
J_pp IM
t_RISE IM
t_FALL IM
h1/H
h2/H
h3/H
h4/H
h5/H
h6/H
hx/H
Characteristic:
IM Output Pattern Jitter
IM Output Rise Time (20 - 80 %)
IM Output Fall Time (80 - 20 %)
Ringing, See figure
Ringing, See figure
Ringing, See figure
Ringing, See figure
Ringing, See figure
Ringing, See figure
Crosspoint, See figure
Conditions:
Note 3, 2
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
MIN.:
45
TYP.:
MAX.:
0.06
100
100
-
12
7
7
15
-
55
UNIT:
UI_PP
ps
ps
%
%
%
%
%
%
%
Note 1:
Note 2:
Note 3:
R_LOAD = 25 W to VCC connected to pin IM. I_LD = 50 mA. Rise/Fall times at 20 – 80 % of HI/LO voltage levels. IMB con-
nected to VCC.
Added jitter. Measured as a peak-peak jitter value on a sampling oscilloscope in 60 s period. Measured with the data re-
timing enabled, and using the retiming clock signal as trigger for the oscilloscope.
Load is equivalent circuit of LD module, see Figure 10 on page 5 . Input signal is PN23 (2²³ -1 PRBS). Measured on the
optical output of LD module. These specs are target specs.
Data Sheet Rev.: 11
GD16521
Page 11 of 13