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Active filter Design

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MichaelHelal

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How can i extract the required GBW and the TF for two-stage miller amplifier implemented in a complex filter design?
I am designing a complex filter that uses 2 stage miller amplifier
I have a problem how to extract the GBW of the amplifier since its load is not a capacitor, as usual, it's a resistor?
and also the amplifier is placed in feedback to act as an integrator "having a capacitor and resistor in feedback"
 

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I have difficulties to relate the posted schematic to your question. The simulation circuit (unfortunately an incomplete snippet) uses ideal controlled voltage sources, respectively they neither have a GBW nor is the transfer function load dependent.

Non ideal amplifiers modify the filter transfer characteristic by certain extent. Minimal GBW numbers are just a rule of thumb, you still have to look at the actually achieved filter characteristic and usually need to tune component parameters. The GBW poles create a modified transfer function in any case, there's no way to achieve the intended ideal filter function exactly.
 

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