John Larkin wrote:


I have a specification for an amplifier design that says "0.25%
linearity".

I can't seem to lay my hands on a precise definition of what that
means.

Likewise... How to calculate?

...Jim Thompson

Probably peak deviation from best straight-line fit, as a percentage
of full-scale swing. Most people would use half of rail-rail output
swing (ie, peak, not p-p) as the denominator.

John

Except for marketing types.



Do marketing types know how to divide?


The max. deviation from the straight line is a very complex concept.
Probably they ment the THD of 0.25%

Vladimir Vassilevsky

DSP and Mixed Signal Design Consultant

http://www.abvolt.com