Evolution of High-speed Operational. c7 M/ `( j# O9 u
Amplifier Architectures z& l. [$ u1 i4 ]6 D: H 5 [ o1 d2 Z/ C5 u$ f% {Doug Smith, Mike Koen, and Arthur F. Witulski# s, r" f2 l1 v( N7 ?( M8 f
CONCLUSION# K7 @$ [0 i" G( @
“Never throw anything away” is the phrase that best describes % d8 g; k0 U' T+ U; k9 t: Uthe evolutionary development of operational amplifiers.6 l. O3 f+ B. z' ]
Going back to circuits developed nearly a half century ago,. s+ w- W! \/ R1 A# Y
today’s operational amplifier designer has a vast supply of7 h3 r# @) l/ ?
circuits to draw from in implementing new designs. This article & Y1 \ _: l) `0 k3 i$ k) mhas traced the evolution to a real design application that made% O ]2 _* X, F. w7 y
use of many of the circuits and techniques developed over 7 V1 a8 R" e0 U) U4 Ltime. The net result is not only time saving for the designer, but( w4 F& f1 }- Z: ?
reduced cost for the development of state-of-the art operational % G D3 |* G1 f0 a3 ^amplifiers using the most sophisticated processing technology# N: r) g, h( m
available.