IntegratorSML (Integrator)
Symbol
Available in ADS
Parameters
Name |
Description |
Units |
Default |
|---|---|---|---|
GainAC |
Integrator gain |
None |
1 |
GainDC |
Gain of DC constant |
None |
1.e6 |
Rref |
Reference resistance for both ports |
Ohm |
50 |
Notes/Equations
- The output voltage is equal to the integral (with respect to time) of the input voltage. This device has been modeled after a physically realizable integrator. The dc gain is not infinite and is specified by GainDC.
- GainAC is the ac gain of the integrator (typically set to 1.0); GainDC is the dc gain of the integrator. Both of these are a linear quantity, not in dB.
- An ideal integrator has infinite gain at dc, which is not physically realizable. These parameters describe the operation of the integrator that has been modeled after a traditional high gain differential amplifier with capacitive feedback and a series input resistor. GainDC is the open loop dc gain of the amplifier in this model. Gain is equal to 1/RC where R is the input series resistor value in Ohm and C is the feedback capacitor value in farads.
- The integrator transfer function follows:
where w is the frequency in radians/sec. - IntegratorSML works in both transient and envelope simulations.
- The input resistance of the integrator is Rref. The output is a voltage source Vout in series with output resistance Rref.