MAX3869 Datasheet, PDF (4/16 Pages) Maxim Integrated Products – +3.3V, 2.5Gbps SDH/SONET Laser Driver with Current Monitors and APC

+3.3V, 2.5Gbps SDH/SONET Laser Driver
with Current Monitors and APC
V_CC
A
A
A, B ARE SMD FERRITE BEADS:
B = BLM11A601S MURATA ELECTRONICS
A = BLM21A102S MURATA ELECTRONICS
B
B
MAX3869
OUT-
OUT+
I_OUT+
BIAS
15Ω
25Ω
0.056µF
0.056µF
OSCILLOSCOPE
50Ω
50Ω
V_CC
Figure 2. Output Termination for Characterization
CLK
t_SU
DATA
t_CLK = 402ps
t_H
Figure 3. Setup/Hold Time Definition
Typical Operating Characteristics
(V_CC = +3.3V, load as shown in Figure 2, T_A = +25°C, unless otherwise noted.)
EYE DIAGRAM
(2.488Gbps, 1300nm FP LASER,
1.87GHz FILTER, 32 TQFP-EP)
48ps/div
MITSUBISHI ML725C8F LASER DIODE
TYPICAL DISTRIBUTION OF FALL TIME
25
32 TQFP-EP
I_MOD = 30mA
20
15
MEAN = 87.3ps
σ = 1.6ps
10
5
0
83 84 85 86 87 88 89 90 91 92
FALL TIME (ps)
DISTRIBUTION OF FALL TIME
(WORST-CASE CONDITIONS)
35
32 TQFP-EP
30
I_MOD = 60mA
V_CC = 3.14V
25
T_A = +85°C
20
15
MEAN = 119.1ps
σ = 2.0ps
10
5
0
113 114.5 116 117.5 119 120.5 122 123.5 125 126.5
FALL TIME (ps)
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