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Robin Clark 2011-06-02 18:57:18 +01:00
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DIA_IMAGES = dc1.png fg1b.png fgampa.png fgamp.png opamp.png fg1a.png fg1.png fgampb.png op1.png
DIA_IMAGES = dc1.png inv.png fg1b.png fgampa.png fgamp.png opamp.png fg1a.png fg1.png fgampb.png op1.png
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{
\abstract{
This paper analyses an inverting op-amp
configuration, with the opamp and gain resistors using the FMMD
configuration %, with the opamp and gain resistors
using the FMMD
methodology.
%
It has five base components, ifour resistors %two resistors programming gain, two programming a reference, or virtual ground voltage
It has five base components, four resistors %two resistors programming gain, two programming a reference, or virtual ground voltage
and one op-amp.
Two resistors are used as a current balance/virtual ground to program the gain
of the amplifier, and another pair to set the reference or virtual ground voltage.
We consider two of the resistors as a functional group, a potential divider
where their function is to operate as a virtual ground volatge reference.
The gain resistors work with the op-amp to determeine the gain characteristics.
where their function is to operate as a virtual ground voltage reference.
The gain resistors work with the op-amp to determine the gain characteristics.
%
The base component error modes of the
components are used to model the amplifier from
@ -35,17 +36,18 @@ amplifier determined.
}
{
This chapter analyses an inverting op-amp
configuration, with the opamp and gain resistors using the FMMD
configuration %, with the opamp and gain resistors
using the FMMD
methodology.
%
It has five base components, ifour resistors %two resistors programming gain, two programming a reference, or virtual ground voltage
It has five base components, four resistors % two resistors programming gain, two programming a reference, or virtual ground voltage
and one op-amp.
Two resistors are used as a current balance/virtual ground to program the gain
of the amplifier, and another pair to set the reference or virtual ground voltage.
We consider two of the resistors as a functional group, a potential divider
where their function is to operate as a virtual ground volatge reference.
The gain resistors work with the op-amp to determeine the gain characteristics.
where their function is to operate as a virtual ground voltage reference.
The gain resistors work with the op-amp to determine the gain characteristics.
%
The base component error modes of the
components are used to model the amplifier from
@ -65,16 +67,16 @@ amplifier determined.
A standard non inverting op amp (from ``The Art of Electronics'' ~\cite{aoe}[pp.234]) is shown in figure \ref{fig:noninvamp}.
A standard non inverting op amp (from ``The Art of Electronics'' ~\cite{aoe}[pp.178]) is shown in figure \ref{fig:invamp}.
% \begin{figure}[h]
% \centering
% \includegraphics[width=200pt,keepaspectratio=true]{./invopamp/noninv.png}
% % noninv.jpg: 341x186 pixel, 72dpi, 12.03x6.56 cm, bb=0 0 341 186
% \caption{Standard non inverting amplifier configuration}
% \label{fig:noninvamp}
% \end{figure}
\begin{figure}[h]
\centering
\includegraphics[width=200pt,keepaspectratio=true]{./invopamp/inv.png}
% noninv.jpg: 341x186 pixel, 72dpi, 12.03x6.56 cm, bb=0 0 341 186
\caption{inverting amplifier configuration with potential divider for reference/virtual ground}
\label{fig:noninvamp}
\end{figure}

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