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How to calculate ADS1247 output?



The input signal is 0.2056V differential signal.Use internal reference and internal clock source.

The register is reading out as follows:

The AD Sample reading is as follows:

so my question is :how to calculate the output voltage from the reading?

Gain setting :1

reference voltage:2.048

SPS:5

if i use this :(0x0c0/0xfff)*2.048=0.097v.it is wrong with my input signal(0.2055V)

so please help me,how to calulate the output voltage?

0x0c0---->0.2055V