Evaluation Board User Guide
UG-130
One Technology Way ? P.O. Box 9106 ? Norwood, MA 02062-9106, U.S.A. ? Tel: 781.329.4700 ? Fax: 781.461.3113 ? www.analog.com
Differential Amplifier Evaluation Board for 8-lead SOIC and MSOP Packages
FEATURES
Flexible board layout
Accommodates AD8131/AD8132/AD8138/AD8139
Accommodates various circuit configurations
Enables quick breadboarding/prototyping
Edge-mounted circuit configuration
Easy connection to test equipment and other circuits
RoHS compliant
GENERAL DESCRIPTION
An Analog Devices, Inc., differential driver evaluation board
makes it easy for designers to obtain quick performance results
for their particular differential driver application circuits. The
board layout is very flexible and allows for many circuit configura-
tions, including traditional four-resistor circuits, circuits with
two different feedback loops, circuits with input and output
transformers, filters, and many others. Most resistors and
capacitors use 1206 packages.
The board accommodates the AD8131 , AD8132 , AD8138 , and
AD8139 . The data sheets for these devices should be consulted
in conjunction with this evaluation board user guide.
The AD8131 is a special case because it has internal feedback
networks but can, nonetheless, be evaluated on the board by
?
?
?
Omitting the R19 and R20 feedback resistors and C3 and
C4 capacitors.
Using 0 Ω resistors for Gain Resistor R17 and Gain
Resistor R18.
Ignoring all further references to these components.
DIFFERENTIAL DRIVER EVALUATION BOARD SCHEMATIC
J5
V+
P1
V–
R22
C12
C8
TP2
TP5 TP6 TP7 TP8 TP9 TP10
1
2
3
C5
+
C1
V+
V–
+
C2
R23
C3
R19
R15
R14
CW
5
J3
J4
R4
R2
JP2
JP1
T1, T3
R3
R6
R7
R24
R5
V+
R1
R17
R18
TP4
8
2
1
7
3
V OCM DUT
4
6
R20
C4
TP1
C13
R16
R11
R12
PR1
R10
JP3
JP4
T2, T4
R9
R8
J1
J2
C9
V–
C10
C11
C6
R13
TP3
V–
R21
Figure 1. Evaluation Board Schematic
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. B | Page 1 of 8
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