EVAL-AD5676SDZ Datasheet, PDF (6/12 Pages) Analog Devices – Full featured evaluation board

UG-814
EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide
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 2.
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 SDP-B board, or the evaluation board
can be used in standalone mode.
The Default Position column of Table 2 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 SDP-B board in SDP controlled mode.
Table 2. Link Functions
Link No.
LK1
LK2
LK3
LK4
LK5
Function
This link selects the DAC analog voltage source.
Position A selects the internal voltage source (INT_VCC) from the ADP3331 (U1).
Position B selects an external supply voltage (EXT_ VCC).
This link selects the DAC digital voltage source.
Position A selects the digital voltage source from the SDP-B board (V_IO).
Position B selects an external digital supply voltage (EXT_VLOGIC).
This link selects the reference source.
Position A selects the internal reference of the AD5676R as the reference source or an external reference source
from the SMB connector EXT_REF. Use only Position A with the EVAL-AD5676RSDZ.
Position B selects U6 as the 2.5 V reference source. Do not use Position B with the EVAL-AD5676RSDZ.
This link selects the RSTSEL setting of the AD5676/AD5676R.
Position A selects DAC power up to zero scale.
Position B selects DAC power up to midscale.
This link sets the internal gain setting of the AD5676/AD5676R.
Position A selects software control of the gain via the SDP-B board.
Position B selects a gain of 0 V to 2 × VREF.
Position C selects a gain of 0 V to VREF.
1 _{Position A is the default for the EVAL-AD5676RSDZ. Position B is the default for the EVAL-AD5676SDZ.}
Default
Position
A
A
A/B¹
A
A
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