WOLFRAM SYSTEM MODELER
IdealizedOpAmpLimitedIdealized operational amplifier with limitation |
SystemModel["Modelica.Electrical.Analog.Ideal.IdealizedOpAmpLimited"]
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Idealized operational amplifier with saturation:
Supply voltage is either defined by parameter Vps and Vns or by (optional) pins s_p and s_n.
In the first case the necessary power is drawn from an implicit internal supply, in the second case from the external supply.
If initialization is problematic for a model containing this as a component you can set the homotopyType parameter. Using Linear ignores the saturation initially which simplifies the initialization, and may help if the component is connected with negative feedback; but generally fails if the feedback is positive. Using LowerLimit (or UpperLimit) gives a fixed value within the saturation bounds, which works with positive feedback. However, it does not work if the intent is to initialize the input to give a specific output.
V0 |
Value: 15000.0 Type: Real Description: No-load amplification |
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useSupply |
Value: false Type: Boolean Description: Use supply pins (otherwise constant supply) |
Vps |
Value: +15 Type: Voltage (V) Description: Positive supply voltage |
Vns |
Value: -15 Type: Voltage (V) Description: Negative supply voltage |
strict |
Value: true Type: Boolean Description: = true, if strict limits with noEvent(..) |
homotopyType |
Value: Modelica.Blocks.Types.LimiterHomotopy.NoHomotopy Type: LimiterHomotopy Description: Simplified model for homotopy-based initialization |
in_p |
Type: PositivePin Description: Positive pin of the input port |
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in_n |
Type: NegativePin Description: Negative pin of the input port |
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out |
Type: PositivePin Description: Pin of the output port |
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s_p |
Type: PositivePin Description: Optional positive supply pin |
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s_n |
Type: NegativePin Description: Optional negative supply pin |
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