Maximum Allowable Error for 8-bit ADC with 2.55V Full Scale Input

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The discussion centers on calculating the maximum allowable error for an 8-bit ADC with a full scale of 2.55V and a specified error of 0.1%. The calculated error of 2.55 mV is confirmed, along with a resolution of 10 mV per step. Participants explore how the ADC's rounding affects the maximum difference between the actual input and the output, emphasizing that the error range of ±2.5 mV does not exceed the 10 mV step size. The conclusion is that the maximum difference cannot exceed 10 mV, as the ADC will always round to the nearest step. Overall, the key takeaway is understanding how resolution and error specifications interact in ADC performance.
  • #31
gneill said:
Correct.

Ohhh Now i see why the maximum difference is 7.5 mV! I have been thinking you were just doing 10+2.5 and 10-2.5 like how they do for uncertainity range and you just chose the 10-2.5 because resolution was 10 mV. But well post 28 explains the real thing. Cheers!

P.S. how good are you with Dittus Boelter correlation and dimonsionless groups?
 
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  • #32
JI567 said:
P.S. how good are you with Dittus Boelter correlation and dimonsionless groups?
Never touched them before. But it could be that other Homework Helpers here have dealt with them.
 

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