AD5421 Power On Reset

Question

Of the following pins, which ones are "latched" in at time of power-on reset of AD5421? 
 REG_SEL0 
 REG_SEL1 
 REG_SEL2 
 RANGE0 
 RANGE1 
 ACD 
 Rint/Rext

ADIApproved · Accepted Answer

Hi, 
 The AD5421 powers on with all registers loaded with their default values and with the loop current in the alarm state set to 3.2 mA or 22.8 mA/24 mA (depending on the state of the ALARM_CURRENT_DIRECTION pin and the selected range). 
 The most pins that you mentioned are input pins in a sense that the part will power up and will set settings of the part depending on the values of these pins. 
 Regards, 
 Mark)