Superb... so simply explained such an important concept.

really thoughtful explanation.. students need this since they dont learn how to use these equations in biasing of the circuit.. school/ colleges dont teach this , while they give more preference on teaching complex stuff and ignore basics.. thank you @Analog Snippets

Really good! Well and simply explained

Awesome thank you sir

Very nicely explained!!

Thank you, very clear video

Concept of independent and dependant variable explained amazingly through graphs

@analogsnippets

5 жыл бұрын

Thanks Hemant👍

@pushpitadutta5070

5 жыл бұрын

Yes, I agree. It is such a common dilemma, and this video makes it very clear

Excellent explanation!

@analogsnippets

5 жыл бұрын

Thanks Sudhanshu

Nice video

Thanks for all your efforts in sharing your design experience with meticulous documentation and intuitive explanations! I am enjoying the videos a lot! If possible please clarify further on one of the points shared in the video: - It is mentioned that Gm has a strong effect on: Gain, Bandwidth, settling time, matching and noise. Q. Gm effects Gain, BW, settling time and noise. Agreed! But I could not recall the effect of Gm on Matching of transistors. Did you mean the input referred offsets? From what I recall, the threshold voltage offset depends on the area of devices W * L, and I think one can visualise the input pair Vt offset as input referred offset directly, so that gm does not come into the picture at all. I think my thought process is not in the correct direction. Any inputs will be very helpful. Thanks for the help!

@analogsnippets

Жыл бұрын

Hi Rahul, glad to hear that you are finding videos helpful. To your question: gm does appear in mismatch equations. It appears as gm/Id ratio. You may review video #8 where I discussed mismatch of current mirror. Similar derivation can be made for input diff pair. Please let me know if you have follow up question. Thanks.

@RahulDewani

Жыл бұрын

Thanks a lot for pointing me in the right direction. I was focusing on the absolute offset alone, but I see your point now. The derivations for relative offsets are great. I do not recall seeing this level of detailing in most of the books I have referred. Thanks again for all the awesome videos! :)

If ID is constant and w by L is variable then Gm is proportional to sq root of w by L Gm is inversely proportional to vgs - vt this is second equation since id is constant So as per first equation vgs- vt is inversely proportional to square root w by l so that make sense Now according to first equation since Gm is square root proportional to w by l so