Datasheet

EVAL-AD5243SDZ User Guide UG-346
Rev. 0 | Page 3 of 16
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The EVAL-AD5243SDZ supports using single power supplies.
The evaluation board can be powered either from the SDP-B
port or externally by the J1-1 and J1-2 connectors, as described
in Table 1.
All supplies are decoupled to ground using 10 μF tantalum and
0.1 μF ceramic capacitors.
Table 1. Maximum and Minimum Voltages of the Connectors
Connector No. Label Voltage
J1-1 EXT Analog positive power supply, V
DD
.
VDD
For single-supply operation, the
voltage is 2.7 V to 5 V.
J1-2 GND Analog ground.
LINK OPTIONS
Several link and switch options are incorporated in the evalu-
ation 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-B board, using the EVAL-AD5243SDZ in
single-supply mode. The functions of these link options are
described in detail in Table 3 through Tabl e 6 .
Table 2. Link Options Setup for SDP-B Control (Default)
Link No. Option
A25 3.3 V
A24 GND
Table 3. Link Functions
Link No. Power Supply Options
A25 V
DD
This link selects one of the following as the positive power supply:
5 V (from SDP-B).
3.3 V (from SDP-B).
EXT (external supply from the J1-1 connector).
A24 V
SS
This link should be connected to GND (analog ground).