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Yes I have downloaded from that link already. The point is there is no .exe file or setup file so that I can install that. Can you guide me how I can install that.
thank you,
Hello all,
Wrong. The single-ended DC output of the CMFB need not and will not be equal to vref (that is 0.6V). It will set itself to a value such that the upper and lower branch currents of the main differential pair match.
Just set Vref of the CMFB to be 0.8 V.
A question to think about.
1) Yes it seems to me too from the circuit that the cmfb loop has a positive feedback.
2) CM feedforward: This is a common mode feedforward. I think the capacitor averager is used for compensating the cmfb loop by accomplishing this feedforward technique.
3) The...
When you implement this using switch-capacitor technique, your amp would slew to charge the capacitances during switching transients. Anyway if your amplifier is unstable to this step requirement, then the output might saturate. This spike current's amplitude depends on C1.
imagine the linearity of the elements(like resistors and capacitors) required if you want to implement, say a 24-bit dac. it would involve costly process with cap and resistor trimming and would be highly costly and impractical.
what's the cut off of you 3 rd order filter?
strobeperiod does not have anything to do with simulation accuracy. However, maxstep has. By decreasing maxstep, you are forcing the simulator to solve the equations more often (even though it might not be required because of lack of transitions)...
1) choose ugb of your amp to be atleast 10 times that of your integrator.
2) choose the output stage current of your amp such that it would be able to drive the input resistor of the integrator. Practically you might need to increase the bias currents till you meet the linearity specifications.
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