Datasheet

MAX3869
+3.3V, 2.5Gbps SDH/SONET Laser Driver
with Current Monitors and APC
_______________________________________________________________________________________ 5
120
0
110
100
300
I
BIASMAX
vs. R
BIASMAX
MAX3869-07
R
BIA
S
MAX
(
kΩ
)
I
BIASMAX
(mA)
40
80
100
20
60
1.2
0
0.1 1 10 100
I
MD
vs. R
APCSET
0.4
MAX3869-09
R
AP
CS
ET
(
kΩ
)
I
MD
(mA)
0.6
0.8
1.0
1.1
0.3
0.2
0.1
0.5
0.7
0.9
100
0
1 10 100
I
MOD
vs. R
MODSET
20
10
MAX3869-08
R
M
O
D
S
ET
(
kΩ
)
I
MOD
(mA)
40
30
60
70
50
80
90
0
10
60
50
40
30
20
90
70
80
100
-40 -15 10 35 60 85
SUPPLY CURRENT vs. TEMPERATURE
(EXCLUDE I
BIAS
, I
MOD
, 25Ω LOAD)
MAX3869-10
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
V
CC
= +5.5V
V
CC
= +3.14V
0
10
30
20
40
50
-40 -15 10 35 60 85
BIAS-CURRENT MONITOR GAIN
vs. TEMPERATURE
MAX3869-11
TEMPERATURE (°C)
GAIN (I
BIAS
/I
BIASMON
)
I
BIAS
= 100mA, I
MOD
= 50mA
I
BIAS
= 10mA, I
MOD
= 10mA
ELECTRICAL EYE DIAGRAM
(I
MOD
= 30mA, 2
13
-1 +80 CID, 32 TQFP-EP)
MAX3869-04
100ps/div
250mV/div
ELECTRICAL EYE DIAGRAM
(I
MOD
= 60mA, 2
13
-1 +80 CID, 32 TQFP-EP)
MAX3869-05
100ps/div
400mV/div
3.0
4.0
3.5
5.0
4.5
6.0
5.5
6.5
7.5
7.0
8.0
5 15202510 30 35 40 45 50
RANDOM JITTER vs. I
MOD
MAX3869-06
I
MOD
(mA)
RANDOM JITTER (psp-p)
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, load as shown in Figure 2, T
A
= +25°C, unless otherwise noted.)