Hi Boe,
boe wrote on Apr 18th, 2011, 10:31am:According to common convention INL (and DNL as well) is measured against the best-fit line, so offset and gain-error do not affect INL.
I don't know about common convention but this is written in the book of ADI about the end point method of measurement INL:
"This is the most useful integral
linearity measurement for measurement and control applications of data converters (since
error budgets depend on deviation from the ideal transfer characteristic, not from some
arbitrary "best fit"), and is the one normally adopted by Analog Devices, Inc"
Quote:Offset is not a non-linearity, so it should not be part of INL, whatever definition you use.
Offset is not non-linearity. However, offset causes non-linearity as well as second harmonic causes DC offset. Isn't it?