Monthly Archives: August 2016

Gm/ID versus IC

Posted on August 26, 2016 by Dai

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 →

Posted in Analog Design, MOS Models | Tagged , , , | 1 Comment

Go Moderate

Posted on August 7, 2016 by Dai

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 →

Posted in Analog Design, MOS Models | Tagged , , | 2 Comments

The Calculation of Phase Margin

Posted on August 3, 2016 by Dai

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 →

Posted in Analog Design | Tagged , , | 3 Comments