Datasheet

Typical Operating Characteristics (continued)
(V
CC
= +3.3V, C
APC
= 0.01µF, I
BIAS
= 20mA, and I
MOD
= 30mA, T
A
= +25°C, unless otherwise noted.)
MAX3735/MAX3735A
2.7Gbps, Low-Power SFP Laser Drivers
_______________________________________________________________________________________ 7
PHOTOCURRENT MONITOR GAIN
vs. TEMPERATURE
MAX3735 toc07
TEMPERATURE (°C)
GAIN (A/A)
603510-15
0.5
1.0
1.5
2.0
2.5
3.0
0
-40 85
MODULATION CURRENT vs. R
MODSET
MAX3735 toc08
R
MODSET
(kΩ)
I
MOD
(mA)
10
10
20
30
40
50
60
70
80
90
100
0
1 100
MONITOR DIODE CURRENT vs. R
APCSET
MAX3735 toc09
R
APCSET
(kΩ)
I
MD
(mA)
101
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
0 100
EDGE TRANSITION TIME
vs. MODULATION CURRENT
MAX3735 toc10
I
MOD
(mA)
EDGE TRANSITION TIME (ps)
50403020
30
40
50
60
70
80
20
10 60
RISE TIME
FALL TIME
DETERMINISTIC JITTER
vs. MODULATION CURRENT
I
MOD
(mA)
DJ (ps
P-P
)
50403020
10
20
30
50
40
60
0
10 60
DJ (INCLUDING PWD)
PWD
MAX3735 toc11
RANDOM JITTER
vs. MODULATION CURRENT
MAX3735 toc12
I
MOD
(mA)
RANDOM JITTER (ps
RMS
)
50403020
0.5
1.0
1.5
2.0
2.5
3.0
0
10 60
HOT PLUG WITH TX_DISABLE LOW
MAX3735 toc13
20ms/div
FAULT
V
CC
LASER
OUTPUT
TX_DISABLE
t_init = 60ms
LOW
LOW
0V
3.3V
STARTUP WITH SLOW RAMPING SUPPLY
MAX3735 toc14
20ms/div
FAULT
V
CC
LASER
OUTPUT
TX_DISABLE
LOW
0V
LOW
3.3V
TRANSMITTER ENABLE
MAX3735 toc15
12µs/div
FAULT
V
CC
LASER
OUTPUT
TX_DISABLE
t_on = 44µs
LOW
HIGH
3.3V
LOW