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Analog IC Design - IITM
Добавлен 6 ноя 2017
Видео
Stability of Negative Feedback Systems
Просмотров 8 тыс.6 лет назад
Stability of Negative Feedback Systems
Analog IC Design - Introduction Video
Просмотров 98 тыс.7 лет назад
Analog IC Design - Introduction Video
0.95 is the value of Vbias
Respected sir, I have a doubt since in previous video u used different formula (R=1/(λ*Id)) to calculate the resistance and so I used that formula but by using that the resistance is coming different as calculated in this video. So sir i need your suggestion regarding that. That's all sir thanks.
how does the node Y becomes small signal ground as it is connected to current source whose small signal model will be open circuit.
I currently study at NUS. I don't think anyone here can teach the subject this well. Thank you, Prof. Anniruddhan.
thank u somuch sir
thank you so much sir
thank u so much sir
thank u sir
how did we get e^j2pi/3 and e^-j2pi/3?
sir, for maximum value of output common mode voltage will be "Vdd - Vsg3". During biasing vx and vz should be same.
Condition for M2 to be in saturation is:- Vsd ≥ Vsg - |Vthp| -> -Vd ≥ -Vg - |Vthp| -> Vd ≤ Vg + |Vthp| -> Vo ≤ Vg + |Vthp| For Vg=1.25V (which is within the spec of the ICMR) ; Vo=2.5V(set through feedback in this example) ; |Vthp| = 1V 2.5 ≤ 1.25 + 1V (Condition is not met) So if you have a common mode input voltage of 1.25V and output common mode voltage of 2.5V then M2 will not be in saturation and the the 3V(p-p) will face distortion .
Professor made one mistake!! Keeping overdrive less actually increases your random offset. ΔI= gm ΔV, if there is any mismatch in the two branch currents of a diff amp it gets reflected as an offset voltage at its input. I ∝ (Vgs-vth)^2 ; If the diff pair has a mismatch of +/- 10mV in it's Vth then ΔI will be more if Vgs is comparable to Vth. So always keep Vov more to reduce standard deviation in offset. You can also see how high gm helps!!
Sir, If Af is increasing like 1,8,64,125, the poles should move on jw axis, So how can the poles enter in RHP ?
can anyone tell me why exactly he assumed current in power budget is 3mA
It is because in the specifications the power dissipation was 10mW and Vdd was 3V. So if you divide power dissipation by Vdd the current in the circuit should be arround 3.3mA for which he allocated 3mA for the circuit and rest 330uA for biasing.
This is an amazing Playlist...Thank You Sir.. I generally go through RAZAVI and I couldn't find any of these in that book...
To the point , thankyou
Still I have doubt in effect of CY capacitor in high frequency
Why use power budget will let current to be 3mA
ruclips.net/video/5sqTbMKIMrA/видео.html best explanation I feel
Superb ! Thanks !
gracias
Superb Lecture.! Minor typo 28:40 Vocm (max) can be "as high as" not as as low as.
Bizim hocalarda senin gibi anlatsa ne güzel olurdu Hocam.. Sağolun.
Watch the two videos listed below which begin with descriptions of differential-mode and common-mode currents with animations. A basic scheme of a differential amplifier is introduced with the description of the analogous operation of a U-tube manometer. This is followed with a description of enhancements to the basic scheme of the amplifier to make it suppress common-mode output voltages more efficiently. The Basic action of a Differential Amplifier- the heart of the Opamp. Part 1 of 2 ruclips.net/video/uggOykLShMU/видео.html Part 2 of 2 ruclips.net/video/jLJAYyap5WA/видео.html
Thanks
sir, what is the future scope of Analog and mixed signal circuit designers in terms of jobs and research?
It has a very good future and will be for next 10 years
effect of cy always mitigates the gain at higher frequency due to its low impedence. which is a good sign for common mode gain and cmrr. Is the effect of cm gain seen at low freq or high freq due to cy?
where can i get the full video lectures ..plzzz rply
Hi Sir, thanks for the explanation. What's the significance of having gm in the mismatch equation? Also, what role does vgs(having it small or large) play in the mismatch since we have gm?
Respect for you sir! 🙏
In telescopic while determining Vomax, why only M2 is going into triode. M6 can also go into triode. Why M6 is not considered?
Very neat explanation. Thanks
nice explanation sir thank you so much .