\documentclass[]{standalone}
\input{./tikzpreamble}
\begin{document}
    \begin{tikzpicture}
        \node[anchor=south west,inner sep=0] (image) at (0,0) {%
            \includegraphics{../../pitstop/20180901/calib_i18_s.pdf}
        };
        % \begin{scope}[x={(image.south east)},y={(image.north west)}]
        %     \node[fill=white, draw=gray] at (.8, .51) {
        %         \begin{circuitikz}[scale=1]
        %             \draw[color=black, thick]

        %             (-.1,0) %node[left]{GND}
        %             to [short,f<^=I$_\text{1.8V}$, -] (.1,0)
        %             to [] (.1,.05)

        %             (-.1,.2) %node[left]{1.8V}
        %             to [short, f>_=I$_\text{1.8V}$, -] (.1,.2)
        %             to [] (.1,.15)

        %             (.12,.1) node[draw=black, regular polygon, regular polygon sides=4, minimum size=.27cm, fill=white]{ACS758}

        %             (.169,.1)
        %             to [short, *-] (.3, .1) node[right, draw=black] {VDD\_1V8\_*};
        %         \end{circuitikz}
        %     };
        % \end{scope}
    \end{tikzpicture}
\end{document}