An article entitled “Matching operational amplifier bandwidth
with applications” appeared in the February 2000
issue of Analog Applications Journal. It attempted to
analyze errors incurred when op amps are operated on the
decreasing portion of the bandwidth curve, but a small
mistake confused the explanation. This article focuses on
the error analysis, so each equation is analyzed in detail.
Further, the error analysis is completed for the inverting
and non-inverting op amp configurations; thus the error
function is analyzed as a function of circuit configuration
as well as frequency.