\subsubsection{Temperature Dependence and Compensation: Measurements}
The uncompensated treshold voltage is affected by a thermal variation , around
--150uV per 1C. For a threshold of 1V and a temperature rise of 35C (35C to
-70C) an offset of 5,5mV has been measured. The linear proportion of the
+-150uV per 1°C. For a threshold of 1V and a temperature rise of 35°C (35°C to
+70°C) an offset of 5,5mV has been measured. The linear proportion of the
thermal variation can be compensated which results in a voltage rise of only
-500uV for a temperature rise of 35C.
+500uV for a temperature rise of 35°C.
The compensation value of 0x02c0 was determined by measurement.
To set the compensation value use the padiwa.pl script. For example
``./padiwa.pl 0x303 0 comp 02C0''.
-\begin{figure}[pwoc]
+\begin{figure}[htp]
\centering
- \includegraphics[width=0.6\textwidth]{figures/padiwa_thresh_without_compensation.pdf}
+ \includegraphics[width=0.8\textwidth]{figures/padiwa_thresh_without_compensation.pdf}
\caption[]{Temperature dependence of the threshold without internal compensation.}
\label{fig:pad_without_calib}
\end{figure}
\begin{figure}[htp]
\centering
- \includegraphics[width=0.6\textwidth]{figures/padiwa_thresh_with_compensation.pdf}
- \caption[]{Temperature dependence of the threshold without internal compensation.}
+ \includegraphics[width=0.8\textwidth]{figures/padiwa_thresh_with_compensation.pdf}
+ \caption[]{Temperature dependence of the threshold with internal compensation.}
\label{fig:pad_with_calib}
\end{figure}