Datasheet

MAX3766
622Mbps LAN/WAN Laser Driver with
Automatic Power Control and Safety Shutdown
4 _______________________________________________________________________________________
Typical Operating Characteristics
(Typical Operating Characteristics are measured on the MAX3766 evaluation kit, V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.)
0
20
10
30
40
-40 0
20
-20 40
60
80 100
SUPPLY CURRENT vs. TEMPERATURE
(EXCLUDES OUTPUT CURRENTS AND I
FAIL
)
MAX3766-01
AMBIENT TEMPERATURE (°C)
SUPPLY CURRENT (mA)
6000
4000
11k10 100 10k 100k 1M
MODULATION CURRENT TEMPCO
vs. R
TC
MAX3766-02
R
TC
(
Ω
)
TEMPCO (ppm/°C)
0
2000
100
1
11k10
100
10k
100k
DIE MODULATION CURRENT vs. R
MOD
(T
J
= +25°C)
MAX3766-03
R
MOD
(
Ω
)
LASER MODULATION CURRENT (mAp-p)
10
TEMPCO = 0ppm/°C
TEMPCO = 5600ppm/°C
TEMPCO = 3000ppm/°C
100
1
11k10 100 10k 100k
MODULATION CURRENT vs. R
MOD
(20 QSOP, T
A
= +25°C)
MAX3766-04
R
MOD
(
Ω
)
LASER MODULATION CURRENT (mAp-p)
10
TEMPCO = 0ppm/°C
TEMPCO = 3000ppm/°C
TEMPCO = 5600ppm/°C
125
µ
W/div
161ps/div
EYE DIAGRAM
(622Mbps, 1300nm LASER, 470MHz FILTER)
MAX3766-07
2
31
- 1 PRBS
20
30
40
50
60
70
-40 0
20
-20 40
60
80 100
MODULATION CURRENT
vs. TEMPERATURE
MAX3766-05
AMBIENT TEMPERATURE (°C)
MODULATION CURRENT (mAp-p)
R
TC
= 100
Ω
R
TC
= 330
Ω
R
TC
= 1k
Ω
R
TC
= 3.3k
Ω
R
TC
= 10k
Ω
R
TC
= 100k
Ω
0
50
100
150
200
250
03010 20
40
50 60
MODULATION EDGE SPEED AND
PWD vs. AMPLITUDE
MAX3766-06
MODULATION CURRENT (mAp-p)
20% TO 80% EDGE SPEED (ps)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
PULSE-WIDTH
DISTORTION (ps)
60mA/div
81ps/div
EYE DIAGRAM
(1.244Gbps, 25Ω LOAD, I
MOD
= 60mA)
MAX3766-08
2
31
- 1 PRBS
0.01
10.1 10 100 1000
MONITOR CURRENT vs. R
POWERSET
MAX3766-09
R
POWERSET
(kΩ)
MD CURRENT (mA)
0.1
1
10