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Modelling opamp's gain and BW in simulink

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naalald

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opamp simulink

Hi,
I want to know how we can model the opamp's gain and BW in a discrete-time (switched-cap) integrator in simulink.
Any suggestions?
 

simulink op amp

Use transfer function block to model the opamp dc gain A and single pole or multiple poles.
 

simulink op-amp

Hi,
Remember that there is no capacitance in simulink. You cannot simply use transfer function block for the opamp. You should model the integrator in system level. But how?
Any suggestions?
 

yeah, you can use z transfer function to model the SC integrator, it works.
 

hi naalald,

you can use SD toolbox from **broken link removed**. the finite gain, bandwidth and slew rate of opamp are modelled in real discrete-time integrator.
 

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    naalald

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naalald said:
Hi,
I want to know how we can model the opamp's gain and BW in a discrete-time (switched-cap) integrator in simulink.
Any suggestions?
Click to expand...

What you want? real time model or freqeuncy model?
 

Hi northeast1,
In fact I want to see the opamp finite gain and bandwidth effect in the Simulink simulation of a delta sigma modulator.
Could you please explain what you exactly mean by real time or frequency model?
Thanks.
 

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