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Recent content by phdseeker

  1. P

    Rail to Rail Op Amp Input stage problem

    Thanks, Checkmate Your explain turns me up. The source follower is used to set the constant gm into the circuit. Is the common mode feedback in this circuit efficient?What is the function of the floating current source circled in slash lines? ---------- Post added at 17:34 ---------- Previous...
  2. P

    Rail to Rail Op Amp Input stage problem

    Dear everyone I recently have read a biosensor paper. The author adopts a rail to rail folded cascoding structure to design a fully differential amplifier. The schematic is attached below. My questions are 1. What is the function of the circuit as I circled in red? As far as I know, we need to...
  3. P

    Bandgap reference circuit : Vbg (bandgap voltage) Vs. temperature curve

    The curvature is apparent. You may need to do curvature compensation to improve it. You can find some good papers about that from IEEE
  4. P

    How to increase the output impedance(gain) of an amplifier with current source load?

    Cascoding is an option. I think you don't want one dominates the other in Rout because they are parallel.
  5. P

    Please help me on Monte Carlo Simulation Problem with Cadence

    Recently when I was working on Monte Carlo analysis with Cadence, there is an error happening all the time. *Error* Error ID = 5011 \o *Error* Error Msg = Simulator failed to complete the simulation. \o \o Error found by spectre during hierarchy flattening. \o ERROR \o...
  6. P

    Amlifying small voltage

    Differential Amp

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