[SOLVED] AD7190 registers offset and full-scale

[vishy71]

Hi.

please,can you say what is OFFSET and Full-Scale register in AD7190?
thanks.

 

[erikl]

OFFSET is the unavoidable difference between the inputs of any differential amplifier, when both inputs are supplied by the same voltage, i.e. inputs short-circuited. In case of a single input amplifier this means short-circuit between the single input and its (fixed) reference voltage level, often GND.

Full-Scale register is a register, where the calibration cycle - initiated after each change of a channel's gain - automatically stores the input's full-scale value for this gain. It is initialized for each chip and for each channel for gain=1 by the factory. Can be read and overwritten by the user.

Both offset and full-scale value can be calibrated and stored automatically.

 

[vishy71]

thank you very much