\documentclass[border=3pt]{standalone}
% Circuits
\usepackage[european,s traightvoltages, RPvoltages, americanresistor, americaninductors]{circuitikz}
\tikzset{every picture/.style={line width=0.2mm}}
% Notation
\usepackage{amsmath}
% Tikz Library
\usetikzlibrary{calc}
% Bipoles Specifications
\ctikzset{bipoles/thickness=1.2, label distance=1mm, voltage shift = 1}
% Arrows Above Compenents
% Source: https://tex.stackexchange.com/questions/574576/circuitikz-straight-voltage-arrows-with-fixed-length
\newcommand{\fixedvlen}[3][0.4cm]{% [semilength]{node}{label}
% get the center of the standard arrow
\coordinate (#2-Vcenter) at ($(#2-Vfrom)!0.5!(#2-Vto)$);
% draw an arrow of a fixed size around that center and on the same line
\draw[-{Triangle[round,open]}] ($(#2-Vcenter)!#1!(#2-Vfrom)$) -- ($(#2-Vcenter)!#1!(#2-Vto)$);
% position the label as it where if standard voltages were used
\node[ anchor=\ctikzgetanchor{#2}{Vlab}] at (#2-Vlab) {#3};
}
\newcommand{\fixedvlendashed}[3][0.75cm]{% [semilength]{node}{label}
% get the center of the standard arrow
\coordinate (#2-Vcenter) at ($(#2-Vfrom)!0.5!(#2-Vto)$);
% draw an arrow of a fixed size around that center and on the same line
\draw[dashed,-{Triangle[round,open]}] ($(#2-Vcenter)!#1!(#2-Vfrom)$) -- ($(#2-Vcenter)!#1!(#2-Vto)$);
% position the label as it where if standard voltages were used
\node[ anchor=\ctikzgetanchor{#2}{Vlab}] at (#2-Vlab) {#3};
}
\begin{document}
\begin{circuitikz}
% %Grid
% \def\length{6}
% \draw[thin, dotted] (-\length,-\length) grid (\length,\length);
% \foreach \i in {1,...,\length}
% {
% \node at (\i,-2ex) {\i};
% \node at (-\i,-2ex) {-\i};
% }
% \foreach \i in {1,...,\length}
% {
% \node at (-2ex,\i) {\i};
% \node at (-2ex,-\i) {-\i};
% }
% \node at (-2ex,-2ex) {0};
%Circuit
\node[op amp, noinv input up] at (0,0) (opamp) {};
\node[ground] at (-4.69,-5.5) (ground) {};
\draw (opamp.-) -- ++(-1.15,0) -- ++(0,-2) to[R, l_=$R_1$] ++(0,-2.5) to[short,-*] ++(-2.35,0);
\draw (opamp.+) -- ++(-3.5,0) to[sV, l_=$v_\text{IN}$,] ++(0,-3) -- (ground);
\draw (1.66,0) to[short,*-] ++(0,-2.5) to[R, l^=$R_2$, -*] ++(-4,0);
\draw (opamp.out) to[short,-*] ++(1.5,0) node[shift={(0.6,0)}] {$v_\text{O}$};
\draw[-latex] (opamp.up) -- ++(0,0.5) node[above] {$V_+$};
\draw[-latex] (opamp.down) -- ++(0,-0.5) node[below] {$V_-$};
% \draw[-{Triangle[round]}] ($(opamp.-)+(-0.15,0)$) -- +(+0.2,0) node[below] {\scriptsize$i_-$};
% \draw[-{Triangle[round]}] ($(opamp.+)+(-0.15,0)$) -- +(+0.2,0) node[above] {\scriptsize$i_+$};
%Voltage
% \fixedvlen[0.4]{R1}{$V_{R_1}$};
% \fixedvlen[0.4]{R2}{$V_{R_2}$};
%Nodes
\node[shift={(0,-0.3)}] at (opamp.-) {\scriptsize$v_-$};
\node[shift={(0,+0.3)}] at (opamp.+) {\scriptsize$v_+$};
\end{circuitikz}
\end{document}
