modelImprovedOpAmp3Pin
Idealized operational amplifier within implicit supply
Information
The idealized OpAmp with three pins has an implicit symmetrical supply and shows saturation.
Idealized operational amplifier with saturation:
- Input currents are zero.
- No-load amplification is high (but not infinite).
- Rise time is low (but not zero).
- Output voltage is limited between positive and negative supply.
It should be easy to add a small input parallel conductance and a small output series resistance.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | V0 | 15000.0 | No-load amplification |
| SI.Voltage | Vps | +15 | Positive supply voltage |
| SI.Voltage | Vns | -15 | Negative supply voltage |
| Advanced | |||
| Boolean | useFirstOrder | false | use firstOrder rise of output voltage? |
| SI.Time | Tau | 1e-5 | Time constant of firstOrder rise of output voltage |
| Modelica.Blocks.Types.LimiterHomotopy | homotopyType | Modelica.Blocks.Types.LimiterHomotopy.Linear | Simplified model for homotopy-based initialization |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Electrical.Analog.Interfaces.PositivePin | in_p | Positive pin of the input port | |
| Modelica.Electrical.Analog.Interfaces.NegativePin | in_n | Negative pin of the input port | |
| Modelica.Electrical.Analog.Interfaces.PositivePin | out | Output pin |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Voltage | v_Input | v_in.v | Input voltage |
| SI.Voltage | vOutput | vOut.v | Output voltage |
| SI.Current | iOutput | -out.i | Output current |
| Modelica.Electrical.Analog.Sensors.VoltageSensor | v_in | ||
| Modelica.Electrical.Analog.Sources.SignalVoltage | vOut | ||
| Modelica.Electrical.Analog.Basic.Ground | ground | ||
| Modelica.Blocks.Continuous.FirstOrder | firstOrder | ||
| Modelica.Blocks.Math.Gain | gain | ||
| SimpleLimiter | limiter |