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AD7787: Burnout currents

I would like to know what is the use of the burnout current in the AD7787.

 

The burnout currents are there to be used generally before a conversion, to see
if the sensor is still present. It can be used for detecting short or open
sensor inputs. It's not like a flag or an interrupt though, the user has to
enable the current sources and then perform a measurement and look to see if
the measurement is the expected measurement.
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