MAX3646(2004) Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX3646
(Rev.:2004)
(Rev.:2004)
Maxim Integrated
MAX3646 Datasheet PDF : 14 Pages
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155Mbps to 622Mbps SFF/SFP
Laser Driver with Extinction Ratio Control
Typical Operating Characteristics (continued)
(VCC = +3.3V, CAPC = 0.01µF, IBIAS = 20mA, IMOD = 30mA, TA = +25°C, unless otherwise noted.)
RANDOM JITTER vs.
MODULATION CURRENT
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 10 20 30 40 50 60 70 80 90
IMOD (mA)
COMPENSATION (K) vs. RMODBCOMP
10
1
0.1
0.01
0.001 0.01 0.1
1
10 100
RMODBCOMP (kΩ)
TEMPERATURE COMPENSATION vs.
RTH_TEMP (RMODTCOMP = 500Ω)
100
90
RTH_TEMP = 12kΩ
80
RTH_TEMP = 7kΩ
70
RTH_TEMP = 4kΩ
60
RTH_TEMP = 2kΩ
50
40
30
-10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
TEMPERATURE COMPENSATION vs.
RTH_TEMP (RMODTCOMP = 10kΩ)
44
42 RTH_TEMP = 12kΩ
40 RTH_TEMP = 7kΩ
38 RTH_TEMP = 4kΩ
36 RTH_TEMP = 2kΩ
34
32
HOT PLUG WITH TX_DISABLE LOW
MAX3646 toc14
3.3V
VCC
t_init = 59.6ms
0V
LOW
FAULT
TX_DISABLE
LOW
LASER
OUTPUT
VCC
3.3V
LOW
FAULT
HIGH
TRANSMITTER ENABLE
MAX3646 toc15
TX_DISABLE
t_on = 23.8µs
LOW
LASER
OUTPUT
30
-10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
20ms/div
10µs/div
TRANSMITTER DISABLE
MAX37646 toc16
VCC
3.3V
LOW
FAULT
TX_DISABLE
LOW
HIGH
91.2ns
LASER
OUTPUT
VPC_MON
FAULT
TX_DISABLE
LASER
OUTPUT
20ns/div
RESPONSE TO FAULT
MAX3646 toc17
EXTERNALLY
FORCED FAULT
t_fault = 160ns
VPC_MON
FAULT
TX_DISABLE
400ns/div
LASER
OUTPUT
FAULT RECOVERY TIME
MAX3646 toc18
EXTERNALLY
FORCED FAULT
HIGH t_init = 58ms
LOW
HIGH
LOW
LOW
40ms/div
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