MOSFET - Differential Amplifier Explained

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Күн бұрын

In this video, the basic MOS Differential Amplifier has been explained.
By watching this video, you will learn the following topics:
0:00 Introduction
0:40 Advantage of Differential Signaling
3:33 What is Common-mode input signal?
4:25 Basic MOS Differential Pair
8:41 Differential Amplifier with Common-mode input
13:50 Range of Common-mode input for Differential Amplifier
17:13 Differential Amplifier with Differential Input (Qualitative Analysis)
What is a Differential Amplifier:
A differential amplifier amplifies the difference between the two input signals. It is widely used in integrated circuits as an amplifier.
The first stage of the op-amp is also a differential amplifier.
In a MOS differential pair, two perfectly matched MOSFETs with identical characteristics are used.
In the integrated circuits, it is possible to match the characteristics of the two MOSFETs to some extent.
Advantages of Differential Amplifier:
1) The ideal differential amplifier eliminates the common-mode signal at the output and only amplifies the differential input. Using the differential amplifier it is possible to eliminate or reduce any noise or interference which is common to both input terminals.
2) When multiple differential amplifier stages are cascaded together, then it also eliminates the use of coupling capacitors between each stage.
This video will be helpful to all the students of science and engineering in understanding the basics of the MOS Differential Pair.
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Music Credit: www.bensound.com

Пікірлер: 44

@ALLABOUTELECTRONICS 3 жыл бұрын

Timestamps: 0:00 Introduction 0:40 Advantage of Differential Signaling 3:33 What is Common-mode input signal? 4:25 Basic MOS Differential Pair 8:41 Differential Amplifier with Common-mode input 13:50 Range of Common-mode input for Differential Amplifier 17:13 Differential Amplifier with Differential Input (Qualitative Analysis)

@jinyongoh 3 жыл бұрын

One of the best diff amp lectures on KZfaq

@mayankgupta460 3 жыл бұрын

It was amazing, loved the explanation and how you proceeded with the topics and then build up upon them

@jbztech Жыл бұрын

What my lecturer and friends have been teaching for months,I actually just understood in this video. Thank you 😊

@yassinabdullah5209 8 ай бұрын

seriously, i really like this kind of channel which explains in detail and clearly.

@flaviuswestfall1718 7 ай бұрын

You are single-handedly making me pass my analog electronics course

@haswanthraj3708 3 жыл бұрын

I was about to refer for this video and got it in time.😄

@vovanilva4365 2 жыл бұрын

Great one, even @the university we didn't get such great explanation.

@imanebaadaka3485 Жыл бұрын

true

@ggmb1032 6 ай бұрын

Thank you so much sir for taking the time to give such an excellent explanation.

@akashkiruba3925 Жыл бұрын

Very clear explanation.

@mayurshah9131 3 жыл бұрын

Very well explained 👍👍

@skippersun5280 3 жыл бұрын

nice work , man

@proudindian762 9 ай бұрын

You are awesome. Thanks bro.

@mangalapallirajesh8762 3 жыл бұрын

Very nice explanation

@umargul5644 3 жыл бұрын

Well done

@aboumarakhossam 2 ай бұрын

Thanks for this huge amount of good detailed information about the diff amp. My task is to build a diff amp with two P-channel as a load. How can I make an internal current source with two N-channel and one P-channel?

@myintnaing2470 Жыл бұрын

Think. for. such. a. good. teaching

@pulabhargavi1370 3 жыл бұрын

Sir, can you explain the microcontroler program?? Please sir.

@AjinkyaMahajan 3 жыл бұрын

Wonderful Content Please make a dedicated video on Lockin Amplifier Cheers✨✨

@ALLABOUTELECTRONICS 3 жыл бұрын

will consider it.

@christoschristodoulou9439 4 ай бұрын

THANK YOU

@ececse 2 ай бұрын

Thankyou sir

@anithalv7375 2 жыл бұрын

Superb

@King-Professional 8 ай бұрын

Sir can you please inform about the book you are using?

@user-un3wc7vh3b 8 ай бұрын

Can i get this slides ,please ?

@journey2destination616 2 жыл бұрын

what is the advantage of common mode signal input then , if the differential output is 0 all the time. where it is used ?

@calebv6914 Жыл бұрын

You need to have a DC Signal (Common Mode Signal) in order for current to flow. The common mode signal essentially turns on both FETs and turns them both on the same degree. Adding small AC input signals on top of that will ensure that there is a differential output at the drains of the transistors.

@PreludeSon 3 жыл бұрын

How is it that Vo1 and Vo2 have different polarity when it connected the exact same way?

@ALLABOUTELECTRONICS 3 жыл бұрын

The polarity of Vo1 and Vo2 is different for only differential input. For the common mode input, it is same. And that's why for the common mode input, the differential output Vo1 - Vo2 is zero.

@omerkahyaoglu9700 3 жыл бұрын

You have many playlists, in what order should I watch them? (from 0 to %100)

@ALLABOUTELECTRONICS 3 жыл бұрын

You can start with basic electronics and network analysis playlist. And then you can refer other playlists.( Diode, BJT and MOSFET)

@omerkahyaoglu9700 3 жыл бұрын

@@ALLABOUTELECTRONICS thank you

@ambatisivaji1807 2 жыл бұрын

Nice explanation bro... But my all students asked for "ITI-ELECTRONICS" MATHES Problems please provide electronics caliculations

@mnada72 3 жыл бұрын

How to split the signal that need to be amplified to vin(1) and vin(2)

@ALLABOUTELECTRONICS 3 жыл бұрын

If true differential input signal is not readily available, then the differential input signal can be applied at only side. And still, it is possible to obtain the similar result. For more info check this simulation. www.multisim.com/content/WfWiSqnoRcTvjcpFrX3KL9/mos-differential-amplifier/ Here, DC voltage on both side acts like a common mode input to both terminals. While, 10 mV input signal is applied at only one input. The Differential gain is 4. So, differential output Vo1 - Vo2 is 40 mV.

@mnada72 3 жыл бұрын

@@ALLABOUTELECTRONICS Thank you, but is it possible to generate differential signal out of single ended signal?

@ALLABOUTELECTRONICS 3 жыл бұрын

Yes, with the help of a transformer, it is possible to generate the differential signal from a single ended signal.

@jcyan2615 Жыл бұрын

Good content but poor way of presentation, so hard to focus with that accent and tone of speaking, always fall asleep

@sandipmishra2831 6 ай бұрын

Then go to bed 😪 not on comment section

@sahryun 6 ай бұрын

In which accent people should speak English? Come on....

@gorkemozen2114 2 жыл бұрын

I can't understand your accent, please put subtitles below to the screen

@ebones6957 2 жыл бұрын

Very difficult to understand ..terrible accent.

@yassinabdullah5209 8 ай бұрын

Thanks for your good illustration, Could you recommend me good books in this area to study.? And, because I am working in RFIC circuits, do you have any contact information, I can contact you and discuss more about anything that I need to discuss, If you don't mind 😍😍