Monthly Archives: August 2016

Gm/ID versus IC

According to the EKV model, the inversion coefficient, IC, is defined by the ratio of drain current to a specified drain current, IDSspec, where VGS-VT = 2n*kT/q [1]. In order to know the IC, I have to set up a separate testbench to … Continue reading

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Go Moderate

Either Prof. Sansen’s inversion coefficient (IC) approach or Prof. Murmann’s Gm/Id design methodology is telling the same story of power-aware analog design. With the help of Gm/Id design kit, I can easily visualize the transistor performance as a function of its gate-source voltage … Continue reading

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The Calculation of Phase Margin

Negative feedback is ubiquitous, and the discussion on its stability can be found everywhere. For ease of reference, I will put a memo on the equations to calculate the phase margin. The amplifying system may includes multiple poles: . Neglecting higher … Continue reading

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