\begin{tikzpicture}
%\scriptsize
%\newcommand*\circled[1]{
%    \tikz[baseline=(char.base)]{
%        \node[shape=circle,draw,inner sep=0.5pt,fill=white] (char) {\scriptsize#1};
%    }
%}


% Variables:
\def\IDDTWO{30} %mA
\def\IDDTHREE{100} %mA
\def\BONE{65} %mA

\def\ENDWIDTH{0.5}
\def\SEVEN{6.7}


\draw[thick] (0,-\ENDWIDTH) node[anchor=north] {$0$} -- (0,0.1) node[anchor=south] {};
\draw[thick] (2,-\ENDWIDTH) node[anchor=north] {$I_{DD2N}$} -- (2,0.1) node[anchor=south] {};
\draw[thick] (4,-\ENDWIDTH) node[anchor=north] {$I_{\rho}$} -- (4,0.1) node[anchor=south] {};

\draw[thick] (\SEVEN,-\ENDWIDTH) node[anchor=north] {$I_{DD3N}$} -- (\SEVEN,0.1) node[anchor=south] {\circled{B}};

\draw[thick] (-0.5,0) -- (0.7,0) node[anchor=west] {};

%\draw[thick] (0.7,0.2) to [bend right=20] (0.7,0);
%\draw[thick] (0.7,-0.2) to [bend right=20] (0.7,0);
%
%\draw[dotted, thick] (0.7,0) -- (1.1,0);
\draw[thick] (0.7,0) -- (1.1,0);
%
%\draw[thick] (1.1,0.2) to [bend right=20] (1.1,0);
%\draw[thick] (1.1,-0.2) to [bend right=20] (1.1,0);


\draw[thick] (1.1,0) -- (6.0,0);
%\draw[thick,-{Latex[scale=2.5, length=2, width=3]}] (1.2,0) -- (\SEVEN+0.6,0) node[anchor=west] {[mA]};
\draw[thick,-{Latex}] (6.4,0) -- (\SEVEN+0.6,0) node[anchor=west] {};


%% Draw Bank 0:
%\draw[thick] (\PPOS,-0.2) node[anchor=north] {\scriptsize\PVALUEROUND} --
%(\PPOS,0.2) node[anchor=south] {$I_{\rho}$};

%% Draw Other Banks:

\draw[thick] (4.3375,-0.1) -- (4.3375,0.1) node[anchor=south]
{\circled{1}};
\draw[thick] (4.6750,-0.1) -- (4.6750,0.1) node[anchor=south]
{\circled{2}};
\draw[thick] (5.0125,-0.1) -- (5.0125,0.1) node[anchor=south]
{\circled{3}};
\draw[thick] (5.3500,-0.1) -- (5.3500,0.1) node[anchor=south]
{\circled{4}};
\draw[thick] (5.6875,-0.1) -- (5.6875,0.1) node[anchor=south]
{\circled{5}};
%\draw[thick] (6.0250,-0.1) -- (6.0250,0.1) node[anchor=south]
%{\circled{6}};
%\draw[thick] (6.3625,-0.1) -- (6.3625,0.1) node[anchor=south]
%{\circled{7}};

\draw[thick] (6.0,0.2) to [bend right=20] (6.0,0);
\draw[thick] (6.0,-0.2) to [bend right=20] (6.0,0);

\draw[dotted, thick] (6.0,0) -- (6.4,0);% node[anchor=west] {};

\draw[thick] (6.4,0.2) to [bend right=20] (6.4,0);
\draw[thick] (6.4,-0.2) to [bend right=20] (6.4,0);

%% DRAW P

\draw [thick,
black,decorate,decoration={brace,amplitude=10pt,mirror},xshift=0.0pt,yshift=-0.0pt](2,0)
-- (4,0) node[black,midway,yshift=-0.6cm] {\footnotesize
$\rho$};

\draw [thick,
black,decorate,decoration={brace,amplitude=10pt,mirror},xshift=0.0pt,yshift=-0.0pt](4,0)
-- (\SEVEN,0) node[black,midway,yshift=-0.6cm] {\footnotesize
$1-\rho$};

\end{tikzpicture}