Datasheet

Evaluation Board User Guide UG-324
Rev. 0 | Page 3 of 8
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The EVAL-AD5116SBZ supports using single power supplies.
The evaluation board should be powered externally by the
EXTERNAL-1 and EXTERNAL-2 connectors, as described in
Table 2. The link LK8 should be connected as shown in Table 1.
All supplies are decoupled to ground using 10 µF tantalum and
0.1 µF ceramic capacitors.
Table 1. Link Connections
Link No. Option
LK8 +5V and EXT
ASE
CONFIGURATION
The part allows the user to configure the automatic store enable
before powering up the board. If the
ASE
function is enabled,
the led, D2, indicates when minimum/maximum resistance has
been reached. The AD5116 data sheet provides a detailed
description of this pin.
PUSH BUTTONS
The E VA L-AD5116EBZ provides three switches to operate the
part:
• PU. This switch increases the resistance between R
WB
.
• PD. This switch decreases the resistance between R
WB
.
• NVM. This push button is enabled when the
ASE
function
is disabled and allows manually storage of the RDAC
register into the NVM.
Table 2. Maximum and Minimum Voltages of the Connectors
Connector No. Label Voltage
EXTERNAL-1 VDD Analog positive power supply, V
DD
. It is 2.3 V to 5.5 V.
EXTERNAL-2 AGND Analog ground, AGND.