EVAL_ADDIFFAMP_15 Datasheet, PDF (1/4 Pages) Analog Devices – Differential Driver Evaluation Board

Differential Driver
Evaluation Board
EVAL-ADDIFFAMP
FEATURES
Flexible board layout
Accomodates AD8131/AD8132/AD8138/AD8139
Accomodates various circuit configurations:
4-resistor
Two different feedback loops
Input and output transformers
Filters
GENERAL DESCRIPTION
An Analog Devices differential driver evaluation board makes it
easy for designers to get 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 4-resistor circuits, circuits with two
different feedback loops, circuits with input and output
transformers, filters, and many others. Most resistors and
capacitors are in 1206 packages.
The board accommodates the AD8131, AD8132, AD8138, and
AD8139. Use the data sheets for these devices with this
evaluation board data sheet.
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+
R22
P1
V–
C12 C8
TP5 TP6 TP7 TP8 TP9 TP10
TP2
123
+
C1
V+
V–
+ ^C2
JP2
R23
R24
J3
R17
T1, T3 _R6
R5
R18
J4
R4 R2
JP1
R7
R3
V+ _CW
TP4
R1
C9
V–
C5
C3
R14
R15
R19
JP3
7
8
35
2
1
V_OCM DUT
4
R11
PR1
TP1
C13
J1
T2, T4
J2
6
R20
R12
R10
JP4
R8
R9
R16
C4
R13
C6
C10 C11
TP3
V–
R21
Figure 1.
Rev. A
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