test-bench-pd200/index.org

Voltage Amplifier PD200 - Test Bench

• Introduction
• Voltage Amplifier Model
• Noise measurement
• Transfer Function measurement

Introduction   ignore

The goal of this test bench is to characterize the Voltage amplifier PD200 from PiezoDrive.

Voltage Amplifier Model

The Amplifier is characterized by its dynamics from voltage inputs $V_{in}$ to voltage output $V_{out}$. Ideally, the gain from $V_{in}$ to $V_{out}$ is constant over a wide frequency band with very small phase drop.

It is also characterized by its input noise $n$. This noise is described by its Power Spectral Density.

  \begin{tikzpicture}
    \node[block] (G) at (0,0){$G(s)$};
    \node[addb, left=0.8 of G] (add){};

    \draw[<-] (add.west) -- ++(-1.2, 0) node[above right]{$V_{in}$};
    \draw[->] (add.east) -- (G.west);
    \draw[->] (G.east) -- ++(1.2, 0) node[above left]{$V_{out}$};
    \draw[<-] (add.north) -- ++(0, 0.6) node[below right](n){$n$};

    \begin{scope}[on background layer]
      \node[fit={(add.west|-G.south) (n.north-|G.east)}, inner sep=8pt, draw, dashed, fill=black!20!white] (P) {};
      \node[below] at (P.north) {PD-200};
    \end{scope}
  \end{tikzpicture}

Model of the voltage amplifier

Noise measurement

Here are the documentation of the equipment used for this test bench:

• Voltage Amplifier PD200
• Load Capacitor EPCOS 10μF Multilayer Ceramic Capacitor
• Low Noise Voltage Amplifier EG&G 5113
• Speedgoat ADC IO313

Transfer Function measurement

In order to measure the transfer function from the input voltage $V_{in}$ to the output voltage $V_{out}$, the test bench shown in Figure fig:setup-dynamics-measurement is used.

Here are the documentation of the equipment used for this test bench:

• Voltage Amplifier PD200
• Load Capacitor EPCOS 10μF Multilayer Ceramic Capacitor
• Speedgoat DAC/ADC IO313

Schematic of the test bench to estimate the dynamics from voltage input $V_{in}$ to voltage output $V_{out}$