Category Archives: Circuit Analysis

Ringing in Step Response

Is it possible to tell the stability of a negative-feedback circuit by just looking at its step response? The answer is yes.┬áIn this post, I will try to find the relationship between phase margin and ringing in step response. I … Continue reading

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Capacitor as a Discrete-Time Resistor

Prof. Ali has a column called “Circuit Intuitions” in the IEEE Solid-State Circuits Magazine. This time he wrote about capacitor as a resistor, which is quite helpful for me to understand this property recognized by James Clerk Maxwell 140 years … Continue reading

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A Brief Review On the Orders of PLL

The simplest PLL, as is shown in Fig.1, consists of a phase detector (PD) and a voltage controlled oscillator (VCO). Via a negative feedback loop, the PD compares the phases of OUT and IN, generating an error voltage that varies … Continue reading

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