Datasheet

MAX3740A
3.2Gbps SFP VCSEL Driver with Diagnostic
Monitors
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S
R
Q
R-S LATCH
HIGH-POWER FAULT
HIGH-CURRENT FAULT
V
BIAS
FAULT
BIAS
BIASMON
PWRMON
POR
TX_DISABLE
TX_DISABLE
0.8V
0.8V
V
CC
- 0.2V
FAULT
ENABLE
SAFETY CIRCUIT
FAULT
OUTPUT
MAX3740A
Figure 2. Safety Circuit
V
CC
R
OUT+
100Ω
CURRENT AMPLIFIER 30x
ENABLE
IN+
IN-
OUT+
OUT-
TC1
MODSET
R
TC
R
MODSET
MODULATION
CURRENT GENERATOR
INPUT BUFFER
CURRENT SWITCH
TEMPERATURE
COMPENSATION
TC2
SIGNAL
DETECT
SQUELCH
PEAKING
CONTROL
PEAKSET
200Ω
R
OUT-
1V
R
PEAKSET
MAX3740A
Figure 3. Modulation Circuit