Analog Devices AD5422 Evaluation Board EVAL-AD5422EBZ EVAL-AD5422EBZ Data Sheet

 

Rev. 0 | Page 5 of 12 

LK15 

This link selects the voltage reference source. 

 

Position A selects the internal voltage reference of the AD5422 as the voltage reference source. 

 

Position B selects an external source that can be applied at Connector J3. 

 

Position C selects the on-board ADR435 as the voltage reference source. 

LK16 

This link selects the negative power supply source for U6. 

 

Position A selects the AV

SS

 input as the negative power supply source. (Use only if the power supply applied to AV

SS

 input is 

less (in magnitude) than −16.5 V.) 

 

Position B selects the V− input as the negative power supply source. (Use only if the power supply applied to AV

SS

 input is 

greater (in magnitude) than −16.5 V.) 

LK17 

This link connects the DV

CC

 pin of the AD5422 to the on-board digital power supply. 

 

When this link is inserted, the DV

CC

 pin of the AD5422 is connected to the on-board digital power supply. (LK3 must be 

inserted to disable the AD5422 internal digital power supply.) 

 

When this link is removed, the DV

CC

 pin of the AD5422 is disconnected from the on-board digital power supply. (LK3 should 

be removed to enable the AD5422 internal digital power supply.) 

LK18 

This link connects the AV

DD

 pin of the AD5422 to the power supply applied at the AV

DD

 input connector, J2. (LK18 must be 

inserted for operation of the AD5422.)