A1750A DWDM Analog
Forward-Path or Return-Path Laser Module
Data Sheet, Rev. 4
June 2001
Electrical Schematics
(continued)
14
NC
13
LASER
COMMON (+)
LASER
MODULATION (–)
LASER
COMMON (+)
THERMISTOR
1
2
THERMISTOR
3
200
Ω
4
SEE
FIGURE 4
3.3
µH
39 nH
0.01
µf
SEE
FIGURES
3A AND 3B
12
dc LASER
BIAS
MPD ANODE
CASE GROUND
11
10
NC
9
MPC CATHODE
5
1000 pf
CASE
GROUND
CASE
GROUND
6
TEC (+)
7
TEC (–)
0.01
µf
0.01
µf
1000 pf
8
1-1238F
Figure 2. A1750A Circuit Schematic
0.01
µf
C7
3:5
T1*
2
3
SEE PIN 12,
FIGURE 2
0.5 pF—2.5 pF
VSWR
R1
37.5
Ω
SEE PIN 12,
FIGURE 2
R2
37.5
Ω
1-1238F.b
1 pF—
5 pF
FREQUENCY
RESPONSE
* T1 (75
Ω)
3:5.
0.01
µf
0.01
µf
Figure 3b. Resistive-Matched Configuration
1-1238a(F)
Figure 3a. Impedance-Matched Configuration
4
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
