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SFP Laser Controller and
Diagnostic IC
DIGITAL THERMOMETER CHARACTERISTICS
(V CC = 2.97V to 5.5V, T A = -40°C to +95°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Thermometer Error
Update Rate
T ERR
t frame
-40°C to +95°C
(Notes 10, 17)
Dual range disabled
Dual range enabled
-3
57
67
+3
70
80
°C
ms
AC ELECTRICAL CHARACTERISTICS
(V CC = 2.97V to 5.5V, T A = -40°C to +95°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SHUTDOWN AND FAULTS (SEE FAULT AND SHUTDOWN TIMING DIAGRAMS FIGURES 1 TO 10), FOR FAST ALARMS AND
SFP MANAGEMENT
TX-D (to DACs Off-State
Currents)
Recovery from Normal Disable
(to DACs Set Values)
Recovery After Power-Up (to
DACs Set Values)
t OFF
Figure 4
t ON
Figure 4
t INIT_DACs
Figure 9
From
TX-D
(Notes 11, 17)
From
TX-D
(Notes 12, 17)
From
V CC = 2.97V
(Notes 11, 17)
5
0.8
100
μs
ms
ms
I BMD > TripHi
Shutdown Response Time (to
DACs Off-State Current)
t FAULT
Figure 5
or I BIAS > Trip
I BMD < TripLo
50
μs
(Notes 11, 17)
Recovery from Safety Fault
Shutdown (to DACs Set Values)
t INITSF
Figures 6
and 10
From
TX-D
(Notes 11, 17)
50
ms
Fault Reset Time (to TX-F = 0)
Fault Reset Time (to TX-F = 0)
t INITR1
Figure 2
t INITR2
Figures 1,
2, 3, and 6
From
TX-D
From
V CC = 2.97V
100
100
200
200
ms
ms
I BMD > TripHi
Fault Assert Time (to TX-F = 1)
t FAULT
Figure 5
or I BIAS > Trip
I BMD < TripLo
50
μs
(Note 11)
LOS Assert Time
LOS Deassert Time
t LOSS_ON
Figure 8
t LOSS_OFF
Figure 8
RSSI < Trip
(Note 12)
RSSI > Trip
(Note 12)
50
50
μs
μs
4
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