Rainbow Electronics MAX3737 - Manual (Page 6)

MAX3737
Multirate Laser Driver with Extinction
Ratio Control
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V CC = +3.3V, C APC = 0.01µF, I BIAS = 20mA, I MOD = 30mA, T A = +25°C, unless otherwise noted.)
30
32
34
36
38
40
42
44
-20 20 0 40 60 80 100
TEMPERATURE COMPENSATION
vs. R TH_TEMP (R MODTCOMP = 10k Ω)
MAX3737 toc15
TEMPERATURE ( °C)
I MOD
(mA)
R TH_TEMP = 12k Ω
R TH_TEMP = 7k Ω
R TH_TEMP = 4k Ω
R TH_TEMP = 2k Ω
20ms/div
HOT PLUG WITH TX_DISABLE LOW
V CC
FAULT
MAX3737 toc16
TX_DISABLE
LASER
OUTPUT
t_init = 60ms
3.3V
0V
LOW
LOW
20 µs/div
TRANSMITTER ENABLE
V
CC
FAULT
MAX3737 toc17
TX_DISABLE
LASER
OUTPUT
t_on = 75 µs
3.3V
LOW
HIGH
LOW
40ns/div
TRANSMITTER DISABLE
V CC
FAULT
MAX3737 toc18
TX_DISABLE
LASER
OUTPUT
3.3V
LOW
LOW
t_off = 134ns HIGH
1 µs/div
RESPONSE TO FAULT
V PC_MON
FAULT
MAX3737 toc19
TX_DISABLE
LASER
OUTPUT
t_fault = 0.9 µs
HIGH
EXTERNALLY
FORCED FAULT
LOW
LOW
100ms/div
FAULT RECOVERY TIME
V PC_MON
FAULT
MAX3737 toc20
TX_DISABLE
LASER
OUTPUT
t_init = 68ms
LOW
EXTERNAL FAULT
REMOVED
LOW
HIGH
HIGH
LOW