opamp design

naresddin78

Abstract —Intemafly compensated CMOS op amps have ~en widely
used in sampled-analog signaf processing applications over the past several
years; however, the popular two-stage op amp suffers from poor ac power
supply rejection to one of the power rails. This paper presents two circuits
that overcome the PSRR problems of the earlier amplifiec one for virtual
ground applications such as switched-capacitor integrators, and the other
for buffer applications requiring wide common-mode input range. Small
signal [email=an@ysis]an@ysis[/email] is developed for the open loop and PSRR responses of the
two amplifiers. In addition, design guidelines are suggested and test results
are presented.

luoyih

thanks

luoyih

fanjx

好好看看看看

darkhorselfm

thanks for sharing!

use45256

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