Evaluation Board User Guide
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The EVAL-AD5172SDZ supports using single power supplies.
The evaluation board can be powered either from the SDP port
or externally by the J1-1 and J1-2 connectors, as described in
All supplies are decoupled to ground using 10 μF tantalum and
UG-243
LINK OPTIONS
Several link and switch options are incorporated in the
evaluation board and should be set up before using the board.
Table 2 describes the positions of the links to control the
evaluation board by a PC, via the SDP board, using the EVAL-
AD5172SDZ in single-supply mode. The functions of these link
options are described in detail in Table 3 through Table 6.
0.1 μF ceramic capacitors.
Table 2. Link Options Setup for SDP Control (Default)
Table 1. Maximum and Minimum Voltages of the Connectors
Link No .
Option
Connector No.
J1-1
Label
EXT
Voltage
Analog positive power supply, V DD .
A25
A24
3.3 V
GND
VDD
For single-supply operation, it is 2.7 V
to 5 V.
J1-2
GND
Analog ground.
Table 3. Link Functions
Link No.
A25
A24
Power Supply
V DD
V SS
Options
This link selects one of the following as the positive power supply:
5 V (from SDP).
3.3 V (from SDP).
EXT (external supply from the J1-1 connector).
This link should be connected to GND (analog ground).
Rev. 0 | Page 3 of 16
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