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Forum Post: RE: ADS1231 measure

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Hi Bob,

Many thanks for your help. I've done 2 identical circuits as defined in Figure 24 on hole board test. As said before, first one did measurements but I had a an output indicating I'm out of input range. With the second one, output seems valid : I observe output corresponding to measured input range (I read from -0.6mV to ~19mV). 

Now I haven't any filter before analogic inputs. Have you  got some reference values for "anti-aliasing or EMI/RFI noise filtering"  components according to figure 24? I read some interesting doc about it :

http://www.ti.com/lit/ml/slyp163/slyp163.pdf

http://www.ti.com/lit/ug/sbau120b/sbau120b.pdf

Now I have to choose between given solutions ...

Lahorde


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