Rainbow Electronics MAX3646 - Manual (Page 4)

MAX3646
155Mbps to 622Mbps SFF/SFP
Laser Driver with Extinction Ratio Control
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= +3.3V, C
APC
= 0.01µF, I
BIAS
= 20mA, I
MOD
= 30mA, T
A
= +25°C, unless otherwise noted.)
OPTICAL EYE DIAGRAM
(622.08Mbps, 2 7 - 1 PRBS, 467MHz FILTER)
MAX3646 toc01
270ps/div
1310nm FP LASER
r e = 8.2dB
OPTICAL EYE DIAGRAM
(155Mbps, 2 7 - 1 PRBS, 117MHz FILTER)
MAX3646 toc02
1ns/div
1310nm FP LASER
r e = 8.2dB
ELECTRICAL EYE DIAGRAM
(I MOD = 30mA, 622.08MHz, 2 7 - 1 PRBS)
MAX3646 toc03
320ps/div
75mV/div
2pF BETWEEN OUT+
AND OUT-
SUPPLY CURRENT (I CC ) vs. TEMPERATURE
(EXCLUDES BIAS AND MODULATION CURRENTS)
MAX3646 toc04
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
80 70 60 50 40 30 20 10 0 -10 -20 -30
35
40
45
50
55
60
30
-40 90
3.63V
2.97V
3.3V
BIAS-CURRENT MONITOR RATIO
vs. TEMPERATURE
MAX3646 toc05
TEMPERATURE (°C)
I BIAS
/I
BC_MON
(mA/mA)
80 70 50 60 -10 0 10 20 30 40 -30 -20
72
74
76
78
80
82
84
86
88
90
70
-40 90
PHOTOCURRENT MONITOR RATIO
vs. TEMPERATURE
MAX3646 toc06
TEMPERATURE (°C)
I MD
/I
PC_MON
(mA/mA)
80 70 50 60 -10 0 10 20 30 40 -30 -20
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
0.80
-40 90
MODULATION CURRENT vs. R MODSET
MAX3646 toc07
R MODSET (kΩ)
I MOD
(mA)
10
10
20
30
40
50
60
70
80
90
0
1 100
PHOTODIODE CURRENT vs. R APCSET
MAX3646 toc08
R APCSET (kΩ)
I MD
(mA)
10 1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
0.1 100
DETERMINISTIC JITTER vs.
MODULATION CURRENT
MAX3646 toc09
I MOD (mA)
DJ (ps
P-P
)
80 70 50 60 20 30 40 10
30
40
50
60
70
80
90
100
20
0 90
155mbps