Overview of 16-bit SDADC

AN4207

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Doc ID 023945 Rev 1

Software procedure for offset and gain calibration

The flowchart below shows a typical SDADC application using both offset and gain

calibration.

Figure 9.

SDADC software calibration sequence

Input voltage acquisition

Configure SDADC (gain,

conversion mode, channel…)

Run offset calibration

Convert the accurate reference

Calculate the exact gain value

Store the exact gain value in

non-volatile memory or back-

up registers

Acquire the SDADC input

(sensor outpout)

Calculate the input voltage

using the exact gain value

End

Stop conversion?

MSv31136V1