Dave OB wrote on Aug 24th, 2009, 2:54am:I'm trying to quantify the linearity of Gain for an amplifier design and compare it against another.
I'm currently calculating the maximum deviation of the output from linear as a percentage of the maximum output voltage swing.
Does this sound reasonable? Or is there an better definition for this value.
Thanks all
Dave.
Some context would help in making a useful reply. There are loads of ways to measure linearity, depending on what you're interested in. If your signals are large, your description makes sense. If you have a small signal that moves around to different dc levels, you might want an entirely different definition.
Steve