UG-814
EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide
Rev. A | Page 8 of 12
LINK CONFIGURATION OPTIONS
Multiple link (LKx) options must be set correctly to select the
appropriate operating setup before using the evaluation board.
The functions of these options are described in Table 3.
SETUP CONDITIONS
Before applying power and signals to the evaluation board,
ensure that all link positions are as required by the operating
mode. There are two modes in which to operate the evaluation
board. The evaluation boards can be operated in SDP controlled
mode to be used with the
board, or the evaluation board
can be used in standalone mode.
The Default Position column of Table 3 shows the default
positions in which the links are set when the evaluation board
is packaged. When the board is shipped, it is set up to operate
with the
board in SDP controlled mode.
Table 3. Link Functions
Link No.
Function
Default
Position
LK1
This link selects the DAC analog voltage source.
A
Position A selects the internal voltage source (INT_VCC) from the
(U1).
Position B selects an external supply voltage (EXT_ VCC).
LK2
This link selects the DAC digital voltage source.
A
Position A selects the digital voltage source from the
board (V_IO).
Position B selects an external digital supply voltage (EXT_VLOGIC).
LK3
This link selects the reference source.
A/B
1
Position A selects the internal reference of the
as the reference source or an external reference source
from the SMB connector EXT_REF. Use only Position A with the
Position B selects U6 as the 2.5 V reference source. Do not use Position B with the
LK4
This link selects the RSTSEL setting of the
A
Position A selects DAC power up to zero scale.
Position B selects DAC power up to midscale.
LK5
This link sets the internal gain setting of the
A
Position A selects software control of the gain via the
Position B selects a gain of 0 V to 2 × V
REF
.
Position C selects a gain of 0 V to V
REF
.
1
Position A is the default for the
. Position B is the default for the
