I am trying to adjust the table to the \textwidth but it changes the size of the font and becomes too big. Is there any way to fix the width of the table to the margins (1\textwidth) without changing automatically the fontsize? Using \tiny seems not to work. Thank you very much any help is appreciate it
\begin{table}[!htb]
\centering
\begin{adjustbox}{width=1\textwidth}
\tiny
\begin{tabular}{|c|ccc|}
\hline
\cellcolor{azultabla}{\textbf{\tiny{Range}}}&
\multicolumn{3}{c|}{\cellcolor{azultabla}{\textbf{\tiny{Return }}}}
\\
\hline
&
\multicolumn{1}{c|}{\tiny{Spec.}}&
\multicolumn{1}{c|}{\tiny{Meas.}}&
\tiny{Pass / Fail}
\\
\hline
\tiny{RF}&
\multicolumn{1}{c|}{\tiny{\textgreater 10}}&
\multicolumn{1}{c|}{\tiny{xxxx}}&
\tiny{xxxx}
\\
\hline
\tiny{IF}&
\multicolumn{1}{c|}{\tiny{\textgreater 10.9}}&
\multicolumn{1}{c|}{\tiny{xxxx}}&
\tiny{xxxx}
\\
\hline
\end{tabular}
\end{adjustbox}
\end{table}
tabularx
package instead