\begin{tikzpicture}

\ctikzset{bipoles/capacitor/height/.initial=.4854}
\ctikzset{bipoles/capacitor/width/.initial=.1}
\draw
    (0,0) node[fd op amp] (opamp) {} node[left] {\(A1\)}
    % Input
    (opamp.-) node[circ] {} to[C, l_=\(C_s\)] ++(-1.5,0) node[ocirc] {} node[left] {\(v_i^-\)}
    (opamp.+) node[circ] {} to[C, l=\(C_s\)] ++(-1.5,0) node[ocirc] {} node[left] {\(v_i^+\)}
    % Feedback
    (opamp.-) -- ++(0,1)  to[C, l=\(C_f\)] ++(2,0) -| (opamp.out +) {}
    (opamp.+) -- ++(0,-1) to[C, l_=\(C_f\)] ++(2,0) -| (opamp.out -) {}
    % Output
    (opamp.out +) node[circ] {} -- ++(1,0) node[ocirc] {} node[right] {\(v_o^+\)}
    (opamp.out -) node[circ] {} -- ++(1,0) node[ocirc] {} node[right] {\(v_o^-\)}
;

\end{tikzpicture}

%Local variables:
% coding: utf-8
% mode: text
% mode: rst
% End:
% vim: fileencoding=utf-8 filetype=tex :