Instruction Manual

MAX3942
10Gbps Modulator Driver
6 _______________________________________________________________________________________
DIFFERENTIAL V
MOD
vs. V
MODSET
(Z
L
= 50Ω ON OUT+ AND OUT-)
MAX3942 toc06
V
MODSET
(V)
DIFFERENTIAL V
MOD
(V
P-P
)
0.750.500.25
1
2
3
4
5
6
7
0
0 1.00
V
MODSET
IS RELATIVE TO V
EE
MAX3942 toc08
FREQUENCY (GHz)
IS
11
I (dB)
1293 6
-35
-30
-25
-20
-15
-10
-5
0
-40
015
DIFFERENTIAL S
11
vs. FREQUENCY
(DEVICE POWERED)
Typical Operating Characteristics
(Typical values are at V
EE
= -5.2V, I
MOD
= 100mA, T
A
= +25°C, unless otherwise noted.)
10.7Gbps ELECTRICAL EYE DIAGRAM
(V
MOD
= 2V
P-P
DIFFERENTIAL, 2
31
- 1 PRBS)
MAX3942 toc01
16ps/div
10.7Gbps ELECTRICAL EYE DIAGRAM
(V
MOD
= 6V
P-P
DIFFERENTIAL, 2
31
- 1 PRBS)
MAX3942 toc02
16ps/div
SUPPLY CURRENT vs. TEMPERATURE
(50Ω LOAD, EXCLUDES I
MOD
)
MAX3942 toc03
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
MAX3942 toc04
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
0
0.6
0.4
0.2
1.0
0.8
1.8
1.6
1.4
1.2
2.0
-50 -30 -10 10 30 50 70 90
PULSE-WIDTH DISTORTION
vs. TEMPERATURE
MAX3942 toc05
TEMPERATURE (
°
C)
PULSE-WIDTH DISTORTION (ps)
DIFFERENTIAL S
22
vs. FREQUENCY
(DEVICE POWERED)
MAX3942 toc09
FREQUENCY (GHz)
|S
22
| (dB)
12963
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
-30
015
0
1
10
10k
POWER-SUPPLY NOISE REJECTION
vs. FREQUENCY
10
5
15
25
20
30
MAX3942 toc07
FREQUENCY (Hz)
PSNR (dB)
100 1k