Datasheet

EVAL-AD5233SDZ User Guide UG-350
Rev. 0 | Page 3 of 16
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The EVAL-AD5233SDZ supports the use of single and dual
power supplies.
In single-supply mode, the evaluation board can be powered
either from the SDP port or externally by the J1-1, J1-2, and
J1-3 connectors, as described in Table 1.
If dual-supply mode is required, the J1-1, J1-2, and J1-3 connectors
must provide the external power supply, 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 VDD Analog positive power supply, V
DD
.
For single-supply operation, it is
2.7 V to 5.5 V.
For dual-supply operation, it is
2.5 V to 2.75 V.
J1-2 GND Analog ground.
J1-3 EXT VSS Analog negative power supply, V
SS
.
For single-supply operation, it is 0 V.
For dual-supply operation, it is
−2.5 V to −2.75 V.
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-AD5233SDZ in
single-supply mode. The functions of these link and switch
options are described in detail in Table 3 through Table 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 VDD (external supply from the J1-1 connector).
A24 V
SS
This link selects one of the following as the negative power supply:
GND (analog ground).
EXT VSS (external supply from the J1-3 connector).