Link Configuration Options - Analog Devices EVAL-AD7903SDZ User Manual

UG-609

LINK CONFIGURATION OPTIONS

Care should be taken before applying power and signals to the
evaluation board to 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 board can be operated in
SDP controlled mode to be used with the SDP board, or the
evaluation board can be used in standalone mode.
Table 3. Solder Links—Factory Default Settings
Link Setting
SL1 A
SL2 A
SL3 A
SL4 A
SL5 A
SL6 A
LK3 A
LK4 A
LK5 A
LK6 A
LK7 A
LK8 A
LK9 A
LK10 A
LK11 A
LK12 A
Function
+V
S
−V
S
−V
S
+V
S
Analog input
Analog input
V_SDP
V
REF
V for ADC
DD
U12 output connects to
U14 input
U17 output connects to
U16 input
ADC2 input
ADC2 input
U17 input
U17 input
U16 input
Rev. 0 | Page 10 of 32
EVAL-AD7903SDZ User Guide
When operating in SDP controlled mode, ensure that VIO is
3.3 V. Operating with a VIO greater than 3.3 V in SDP controlled
mode may damage the SDP board.
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 assumed that you are
going to operate the evaluation board with the SDP board (SDP
controlled mode).
Comment
Change to B if using bench supplies.
Change to B if using bench supplies.
Change to B if using bench supplies.
Change to B if using bench supplies.
Do not alter.
Do not alter.
Change to B if using bench supplies.
Change to B if using bench supplies.
Change to B if using bench supplies.
Change to B if U14 inverting input needs to be connected to ground.
Change to B if U16 inverting input needs to be connected to ground.
Change to B if using ADC1 input.
Change to B if using ADC1 input.
Change to B if U17 needs to be bypassed.
Change to B if U17 needs to be bypassed.
Change to B if U16 needs to be bypassed.