MAX8520 MAXIM [Maxim Integrated Products], MAX8520 Datasheet - Page 16

• Manufacturer Part Number: MAX8520
• Description: Smallest TEC Power Drivers for Optical Modules
• Manufacturer: MAXIM [Maxim Integrated Products]

6) To ensure high DC loop gain and minimum loop
Smallest TEC Power Drivers for
Optical Modules
16
TOP VIEW
error, keep the board layout adjacent to the negative
input pin of the integrator (U2 in Figure1) clean and
free of moisture. Any contamination or leakage
current into this node can act to lower the DC gain of
the integrator, which can degrade the accuracy of
the thermal loop. If space is available, it can also be
helpful to surround the negative input node of the
integrator with a grounded guard ring.
______________________________________________________________________________________
PGND1
COMP
SHDN
ITEC
LX1
1
2
3
4
5
THIN QFN
MAX8520/
MAX8521
15
14
13
12
11
LX2
PGND2
FREQ
V
GND
DD
Refer to the MAX8520/MAX8521 evaluation kit for a PC
board layout example.
TRANSISTOR COUNT: 3007
PROCESS: BiCMOS
PGND2 PGND2 PGND2 PGND1 PGND1 PGND1
PV
VDD
GND
LX2
OS2
D6
C6
B6
A6
F6
E6
DD
2
PV
GND2
FREQ
CTLI
LX2
E5
D5
C5
B5
A5
F5
DD
2
GND2
N.C.
N.C.
REF
D4
C4
F4
E4
B4
A4
CS
MAX8521
Pin Configurations
UCSP
Chip Information
GND2
MAXV
N.C.
N.C.
OS1
D3
C3
B3
A3
F3
E3
COMP SHDN
PV
MAXIP MAXIN
GND2
LX1
E2
D2
C2
B2
A2
F2
DD
1 PV
ITEC
LX1
D1
C1
F1
E1
B1
A1
DD
1