Manual

MAX3941
10Gbps EAM Driver with Integrated
Bias Network
6 _______________________________________________________________________________________
Typical Operating Characteristics
(Typical values are at V
EE
= -5.2V, I
BIAS
= 30mA, I
MOD
= 100mA, T
A
= +25°C, unless otherwise noted.)
10Gbps ELECTRICAL EYE DIAGRAM
(V
MOD
= 1V
P-P
, 2
31
- 1 PRBS)
MAX3941 toc01
20ps/div
10Gbps ELECTRICAL EYE DIAGRAM
(V
MOD
= 3V
P-P
, 2
31
- 1 PRBS)
MAX3941 toc02
20ps/div
OC-192 OPTICAL EYE DIAGRAM
(OC-192 FILTER, 2
31
- 1 PRBS)
MAX3941 toc03
15ps/div
1
2
3
NOTE: BIAS AND MODULATION
SET AT OPTIMUM LEVELS FOR EAM.
Figure 5. Bias and Modulation Relationship to EAM Voltage
V
OUT
V
MOD
VOLTAGE
GND
BELOW USABLE RANGE
USABLE RANGE
V
EE
+ 1.9V
V
BIAS
Test Circuits and Timing Diagrams (continued)
SUPPLY CURRENT vs. TEMPERATURE
(50Ω LOAD, EXCLUDES I
BIAS
, I
MOD
)
MAX3941 toc04
TEMPERATURE (°C)
I
EE
(mA)
80706050403020100-10-20-30
110
120
130
140
150
160
170
100
-40 90
RETIMING ENABLED
RETIMING DISABLED
PULSE WIDTH vs. R
PWC
MAX3941 toc05
R
PWC-
(Ω)
PULSE-WIDTH POSITIVE PULSE (ps)
2505001000 7501500 12501750
760
770
780
790
800
810
820
830
840
850
750
2000 0
R
PWC+
(Ω)
175015001000 1250500 7502500 2000
MEASURED AT 1.25Gbps
WITH A 1010 PATTERN