Analog Devices EVAL-AD7656-1SDZ User Manual page 7

Evaluation Board User
Guide
Link No. Function
LK15 V4 input jumper. When inserted input is shorted to GND.
LK16 VDRIVE Source Signal Selection
Position A: Sourced from onboard 3.3V. (Requires the SDP1Z board to be connected) .
Position B: Connected to external socket J7-14.
LK17 V5 input jumper. When inserted input is shorted to GND.
LK18 V6 input jumper. When inserted input is shorted to GND.
LK19 REFIN/REFOUT Source Selection
Inserted: External Reference connected
Removed: External Reference disconnected.
SER/ PAR _SEL Selection
LK20
Position A: Connected to VDRIVE.
Position B: Connected to GND.
LK21 U5 AD780 Voltage Output Selection
Inserted: Output is 3V.
Removed: Output is 2.5V.
CONVST_A / CONVST_B Link Selection
LK22
Connects CONVST_A to CONVST_B when inserted.
RD Source Signal Selection
LK23
Position A: Controlled by EVAL-SDP1Z.
Position B: Connected to external socket J7-3.
LK24 REFCAPA Source Selection
Inserted: External Reference connected
Removed: External Reference disconnected.
LK25 DB10 / SDATA_C Destination Selection
Position A: data to EVAL-SDP1Z.
Position B: data to external socket J7-6.
DB7 / HBEN / DCEN Selection
LK26 Position A: data to EVAL-SDP1Z.
Position B: Connected to VDRIVE.
Position C: Connected to GND.
LK27 DB9 / SDATA_B Destination Selection
Position A: data to EVAL-SDP1Z.
Position B: Not used
Position C: data to external socket J7-5.
LK28 DB8 / SDATA_C Destination Selection
Position A: data to EVAL-SDP1Z.
Position B: Not used
Position C: data to external socket J7-4.
LK29 DB14/REFBUF
Position A: data to EVAL-SDP1Z.
Position B: Connected to VDRIVE.
Position C: Connected to GND.
LK30 DB6 / SCLK Selection
Position A: Connected to EVAL-SDP1Z.
Position B: Not used
Position C: Connected to external socket J7-11.
Selection
/DIS EN
Rev. PrA | Page 7 of 32
UG-AD7656-1/57-1/58-1