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(ADuM3190)Gain error . Rev0 vs RevA

Question asked by donadona999s on Oct 17, 2016
Latest reply on Oct 20, 2016 by donadona999s

Hi!

 

I have some questions about ADuM3190.

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Q1)

At datasheet Rev.0 , it is written this.

But at datasheet Rev.A , it is written this.

Why did you change this detail?

Was it typo in Rev 0?

It looks same as ADuM4190 datasheet.

Please tell me which is correct.

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Q2)

From datasheet Rev0.

Comp to EAout2 output gain = 2.34~2.6~2.86

 

From datasheet RevA.(Automotive grade)

Comp to EAout output gain = 0.83~1.0~1.17

EAout to EAout2 output gain = 2.5~2.6~2.7

=> Comp to EAout output gain 2.075~2.6~3.159

 

As I calculate , RevA 's specification is worse than Rev0.

Which datasheet is correct?

This gain error is very critical for our customers system so I want to make sure about this.

They said the sample's gain error is bigger than 2.5~2.6~2.7.

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Best regards.

Kawa

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