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[DigiPot AD5293] Why higher register tolerance is narrow register setting value?

Question asked by sofy Employee on May 11, 2016
Latest reply on May 17, 2016 by sofy

Hello,

According to AD5293 datasheet, high accuracy R-Tolerance's Rwb and Rwa code range is getting narrow.

Why it happen?

I suppose because of RDAC architecture that consisted by internal R which has small variety.

So if R-tolerance achieve 1% absolute, number of internal R might be limited.

Is my thought correct?

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Thank you for your help as always.

Best regards,

Sofy

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