GainVoltageControlled
A voltage-controlled gain stage with a user-defined response.
Options
output_mode \( \in \{ \)
HALF
\( , \)
HOLD
\( \} \)
output_polarity \( \in \{ \)
NONINVERTED
\( , \)
INVERTED
\( \} \)
opamp_mode \( \in \{ \)
DEFAULT
\( , \)
CHOPPER_STABILIZED
\( \} \)
Lookup Table
lookup_table
\(= ( G_0, \; G_1 \;, \; ... \;, \; G_{255} ), \; 0.0 \leq G_i \leq 100.0\)
A sequence of 256 floats that defines a mapping between input control voltage and gain.
The CV range of -3V to +3V is mapped to \(G_0\) through \(G_{255}\) in that order.
Inputs
input
Half-Cycle
control
Half-Cycle
Outputs
output
Half-Cycle
Transfer Function
$$
V_{out} = G_{lookup}(V_{ctrl}) \cdot V_{in}
$$
Analog Resource Usage
$$
\begin{array}{|c|c|}
\hline
\text{Opamps} & \text{1 of 8} \\
\hline
\text{Comparators} & \text{1 of 4} \\
\hline
\text{Capacitors} & \text{4 of 32} \\
\hline
\text{Lookup Table} & \text{1 of 1} \\
\hline
\text{Counter} & \text{1 of 1} \\
\hline
\text{SAR} & \text{1 of 4} \\
\hline
\end{array}
$$