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MAX3941ETG+
P1-P3
P4-P6
P7-P9
P10-P11
MAX3941
10Gbps EAM Driver with Integrated
Bias Network
4
_______________________________________________________________________________________
Figure 1. Definition of Single-Ended Input Voltage Range
100mV
100mV
800mV
1.0V
0V
-0.5V
-1.0V
0.4V
0V
-0.4V
(a) DC-COUPLED SINGLE-ENDED CML INPUT
(b) AC-COUPLED SINGLE-ENDED (CML OR PECL) INPUT
Figure 2. Modulating BIASSET and MODSET Pins
0V
V
OUT
V
BIASSET
(a) MODULATING BIASSET
0V
V
OUT
(c) RESULT OF MODULATING BIASSET
AND MODSET 180
°
OUT OF PHASE
P
OUT
(d) RESULTING OPTICAL OUTPUT
0V
V
OUT
mW
V
MODSET
(b) MODULATING MODSET
NOTE:
ALL AMPLITUDES ARE RELATIVE.
T
est Cir
cuits and Timing Diagrams
MAX3941
10Gbps EAM Driver with Integrated
Bias Network
_______________________________________________________________________________________
5
Figure 3. Setup and Hold Timing Definition
V
IS
= 0.1V
P-P
TO 1V
P-P
DC-COUPLED
V
ID
= 0.2V
P-P
TO 2V
P-P
DC-COUPLED
I
MOD
= 40mA
P-P
TO 120mA
P-P
I
BIAS
= 0mA TO 50mA
V
IS
0.1V
P-P
TO 0.8V
P-P
AC-COUPLED
0.2V
P-P
TO 1.6V
P-P
AC-COUPLED
CLK+
CLK-
DATA-
DATA+
(DATA+) -
(DATA-)
I
OUT
NOTE:
I
OUT
RELATES TO RETIMED DATA.
t
SU
t
HD
Figure 4. AC-Characterization Circuit
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
R
OUT
50
Ω
50
Ω
PATTERN
GENERATOR
CLK+
CLK-
DATA-
DATA+
50
Ω
50
Ω
0
1
M
U
X
D
Q
P
W
C
I
MOD
I
OUT
V
EE
V
EE
V
EE
V
EE
MODSET
I
BIAS
V
MODSET
V
BIASSET
BIASSET
-5.2V
0.1
µ
F
300pF
Z
L
OUT
OSCILLOSCOPE
GND
PWC+
RTEN
PWC-
GND
GND2
V
EE
50
Ω
50
Ω
50
Ω
GND1
T
est Cir
cuits and Timing Diagrams (continued)
MAX3941
10Gbps EAM Driver with Integrated
Bias Network
6
_______________________________________________________________________________________
T
ypical 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
VOL
T
AGE
GND
BELOW USABLE RANGE
USABLE RANGE
V
EE
+ 1.9V
V
BIAS
T
est Cir
cuits and Timing Diagrams (continued)
SUPPLY CURRENT vs. TEMPERATURE
(50
Ω
LOAD, EXCLUDES I
BIAS
, I
MOD
)
MAX3941 toc04
TEMPERATURE (
°
C)
I
EE
(mA)
80
70
60
50
40
30
20
10
0
-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)
250
500
1000
750
1500
1250
1750
760
770
780
790
800
810
820
830
840
850
750
2000
0
R
PWC+
(
Ω
)
1750
1500
1000
1250
500
750
250
0
2000
MEASURED AT 1.25Gbps
WITH A 1010 PATTERN
P1-P3
P4-P6
P7-P9
P10-P11
MAX3941ETG+
Mfr. #:
Buy MAX3941ETG+
Manufacturer:
Maxim Integrated
Description:
Buffers & Line Drivers 10Gbps EAM Driver w/Int Bias Network
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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Ups
TNT
EMS
Payment:
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