RaDex
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Hi , I recently joined this forum. Iam working on the design of a fully differential folded cascode ota to be used in a switched capacitor integrator block of a sigma-delta modulator. Iam using Cadence IC614 for circuit design and simulation. I did some simulation to check the open loop gain, GBW shown below. Next I made a testbench to measure the loop gain and phase margin by Stb analysis. Question is on the loop gain as its around -12db which is not correct. Am I doing something wrong here ? Plz suggest
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