Smallest TEC Power Drivers for
Optical Modules
V
DD
L1
4.7µF
V
LX1
CS
DD
REF
C2
1µF
C1
1µF
R2
R
SENSE
0.09Ω
PV
1
DD
OS1
OS2
C3
1µF
R
THER
PGND1
C5
10µF
U1
PV
2
DD
C4
MAX8520
1µF
PGND2
REF
L2
4.7µF
LX2
C6
C7
0.1µF
COMP
1µF
C8
0.1µF
MAXIP
MAXIN
FREQ
ITEC
49.9kΩ
100kΩ
R
EXT
60kΩ
MAXV
ON
OFF
SHDN
CTLI
GND
0.022µF
10µF
10µF
1kΩ
243kΩ
U2
MAX4238
50kΩ
0.01µF
V
REF
DD
U4
MAX5144
DAC
INPUTS
Figure 2. Typical Application Circuit for the MAX8520 with Reduced Op-Amp Count Configuration
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