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Forum Post: RE: DDC232: Internal operation of DDC232 32-channel current-to-digital device

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Hi Eduardo, I am still confused. If I use what you wrote, Ifs = Q/Tint = 350 pC/160 usec = 2.187 uA. If I use the DDC112 equation I referenced previously, Ifs = 0.96(Q)(Vref)/Tint = 0.96(350 pC)(4.096V)/160 usec = 8.60 uA. These are very different full scale values. The DDC112 seems to be of the same architecture - why doesn't that equation apply to the DDC232 ? Please look at the DDC112 datasheet before answering. Thanks. Mark

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