UG-867
EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide
Rev. 0 | Page 6 of 14
LINK CONFIGURATION OPTIONS
Multiple link options must be set correctly to select the appropriate
operating setup before using the evaluation board. Table 2 describes
the functions of these options.
SETUP CONDITIONS
Before applying power and signals to the evaluation board, ensure
that all links are positioned as required by the operating mode.
The evaluation board can operate in SDP controlled mode to be
used with the
SDP-B
board, or the evaluation boards can be
used in standalone mode.
Table 2 shows the default positions of the links when the
evaluation board is packaged. When the board is shipped, it is
set up to operate with the
SDP-B
board in SDP controlled mode.
Table 2. Link Functions
Link No.
Function
Default Position
LK1
This link selects the source of the A0 pin.
B
Position A selects AVDD.
Position B selects GND (default). The software is designed with LK1 in this position.
LK2
This link connects the V
OUT
A to V
OUT
F pins of the
AD5629R
/
AD5669R
to the input pins of the
demultiplexer so that the DAC output value can be monitored using the on-board ADC.
Inserted
LK3
This link connects the V
OUT
A to V
OUT
F pins of the
AD5629R
/
AD5669R
to the input pins of the
demultiplexer so the on-board ADC can monitor the DAC output value.
Inserted
LK4
This link connects a 0.1 µF capacitor to AGND on the V
REF
pin. It is recommended to insert LK4 when
using the internal reference.
Inserted
LK5
This link selects the reference source.
B
Position A selects the internal reference as the reference source. The
AD5629R
/
AD5669R
must be
written to via the software to turn on the internal reference.
Position B selects the on-board 5 V reference as the reference source.
LK7
This link selects the DAC voltage source.
B
Position A selects the AVDD analog circuitry power supply source.
Position B selects the on-board 5 V reference as the power supply source.
LK8
This link sets the RESET pin on the
ADG728
demultiplexer.
B
Position A allows normal operation of the
ADG728
.
Position B resets the
ADG728
.
LK9 to LK14
This link connects the V
OUT
A to V
OUT
F pins of the
AD5629R
/
AD5669R
to the input pins of
ADG728
demultiplexer so that the on-board ADC can monitor the DAC output value.
Inserted
