Datasheet

Evaluation Board User Guide UG-250
Rev. A | Page 3 of 12
EVALUATION BOARD HARDWARE
POWER SUPPLIES
The AD5421 evaluation board requires one power supply
connection from LOOP− to LOOP+ (J7), a voltage in the
range from 5.5 V to 52 V can be applied if the on-board
MOSFET device (U2) is not enabled. With U2 enabled, the
voltage limit is the breakdown voltage of U2, which in this
case is 240 V. A load resistor can also be connected at J7.
LINK OPTIONS
Set the link options on the evaluation board for the required
operating setup before powering on the board. The functions
of the link options are described in Tabl e 2.
Default Link Option Setup
The default link options are listed in Table 1.
Table 1. Link Options
Link No. Option
LK1 Inserted
LK2 B
LK4 Inserted
LK6 Inserted
LK7
Inserted
Alarm_Dir B
Rint_Rext B
Range0 B
Range1 B
Reg_Sel0 A
Reg_Sel1 B
Reg_Sel2 A