Op Amp Theory and Design - Phil's Lab #53
Рет қаралды 41,966
Күн бұрынOperational amplifier (op amp) theory and design of a very simple op amp using discrete components (transistors, resistors, capacitors). Including content on op amp stages (difference amplifier, gain stage, output stage), bandwidth, gain-bandwidth-product (GBP), op amp performance criteria, negative feedback, and more. Final demonstrations of real-world implementation on a PCB using the Digilent Analog Discovery Pro.
[SUPPORT]
Free trial of Altium Designer: www.altium.com/yt/philslab
PCBA from $0 (Free Setup, Free Stencil): jlcpcb.com/RHS
Patreon: / phils94
[LINKS]
GitHub: github.com/pms67
Digilent ADP3450: digilent.com/shop/analog-disc...
[TIMESTAMPS]
00:00 Introduction
00:17 Content
00:53 Altium Designer Free Trial
01:17 JLCPCB
01:39 Op-Amp Basics
02:57 Open Loop View
03:37 Closed Loop View
05:00 Why is Negative Feedback Useful?
07:33 Negatives of Using Feedback
08:07 Implementation of Negative Feedback
08:58 Op Amp Sections
10:10 Design Goals
10:58 Difference Amplifier
14:29 Gain Stage
16:53 Simulation and Gain-Bandwidth-Product (GBP)
18:28 Test Circuit
19:48 PCB and Schematic Overview (KiCad)
22:06 WaveForms Overview
22:49 Test - Gain and Bias
24:18 Test - Gain-Bandwidth-Product
26:04 Test - Low- and High-Pass Filter
27:23 Test - Dominant Pole Compensation
ID: QIBvbJtYjWuHiTG0uCoK
@ninefox344 2 жыл бұрын
This single video could replace a few weeks of electrical engineering lecture and labs I went through years ago. Great work!
@PhilsLab 2 жыл бұрын
Thank you very much, I'm glad to hear that!
@enginstud8852 2 жыл бұрын
No it couldn’t, without these hours of lectures, you would be completely lost watching that video (even though it is awesome, but these things take time to understand and masterize)
@mahudson3547 2 жыл бұрын
Would have been great for revision! But as enginstud says you have to become fluent in the language and that takes time. Amazing that 50 years on, it is still all so familiar…
@denyskovalov2261 Жыл бұрын
I'm totally astonished why this channel has only 70k subscribers, considering so much insightful information in electronics
@subutay1352 2 жыл бұрын
Phil, you are simply amazing dude. I am the one who wants to be an embedded system engineer so I have interest for both hardware and software. You are the best . Notifications are open !
@PhilsLab 2 жыл бұрын
Thank you so much, Kamil!
@desaoaraujo 2 жыл бұрын
Amazing content!!! I wish I had these videos 15 years ago while I was in engineering school!
@Basetonic 2 жыл бұрын
You make really nice Videos. I like how much information you do provide and how deep you go into details in this short amount of time.
@PhilsLab 2 жыл бұрын
Thank you, Johnny!
@stephencurtis2282 Жыл бұрын
Phil's a legend. Great work, Great explanations, nice matter of fact approach to some quite difficult subject matter. He makes it accessible in a way that we rarely see.
@davidegandolfi25 2 жыл бұрын
I thought I knew everything about opamps, but I was wrong! This is the first time I see someone really using discrete transistors instead of an IC 😥😎. Pretty impressive work for such a basic topic!! Thank you Phil for your efforts!
@PhilsLab 2 жыл бұрын
Thank you very much for your comment, Davide!
@andymouse Жыл бұрын
I come back to this periodically for a refresher because its wonderfully concise and digestible ...cheers.
@PhilsLab Жыл бұрын
Thank you, Andy - glad to hear that!
@mic03311 2 жыл бұрын
One of the best video on the subject! @Phil I hope you will release more courses in the future. You are a great teacher!
@mikevegeto1101 2 жыл бұрын
Phil your videos are always excellent. Great work!
@PhilsLab 2 жыл бұрын
Thank you very much, Mike!
@johnstephenson4428 2 жыл бұрын
Great detail and analysis, very good lecture!!
@briandohler8025 2 жыл бұрын
World class content. Super simple implementation of concepts which are never presented so well in undergrad classes. Keep it up.
@PhilsLab 2 жыл бұрын
Thank you very much, Brian!
@AlejandroGarcia-rk5lc 2 жыл бұрын
Incredible video as always. Clear and practical ✍️
@PhilsLab 2 жыл бұрын
Thank you, Alejandro!
@YandiBanyu 2 жыл бұрын
Just when I needed it the most, you delivered. Thank you so much!
@PhilsLab 2 жыл бұрын
Thank you very much for watching!
@deangreenhough1178 Жыл бұрын
Great work Phil, Thank you. Im looking forward to signing up to future courses with you. You are an excellent source of information and its application. I always highly recommend you to anyone seeking knowledge and a clear explaination.
@PhilsLab Жыл бұрын
Thank you very much, Dean! Also thanks a lot for recommending the videos to others :) Currently quite busy with work and making videos but am still working on the FPGA/advanced hardware design course.
@saucebosspl 2 жыл бұрын
Excellent video. Hope you will cover stability of such an opamp soon. I'd love to see second order compensation methods like TMC. They are a great advantage of discrete opamps.
@norm1124 Ай бұрын
I try to understand the internals of am OpAmp since WEEKS, still not there. But maybe I will build a similar board, using this nice "dual transistors" in 6-pin packages to get as well matched pairs as possible. Thanks for all your gorgeous videos, you are one of my the leading advanced teachers here on KZfaq.
@jrfoliveira Жыл бұрын
Fantastic lecture!!! Congrats Phil!!
@PhilsLab Жыл бұрын
Thank you, Juliano!
@anotherlin 2 жыл бұрын
Awesome video! Maybe you should do a dedicated series of videos regarding how to use opamps (the first half of this video), as your explanations are very clear and precise. And maybe some follow-up videos going deeper into the opamp of stages. For example, we hear about long tail pair difference amplifier but not much explanation about how they work.
@rodrigofaria4498 2 жыл бұрын
Way better than a semester worth of uni classes lol. Great job Phill! As usual, your videos are top notch 👌🏼
@muratpinar7478 2 жыл бұрын
Amazing video, many thanks for sharing.
@PhilsLab 2 жыл бұрын
Thank you, Murat!
@mostafakh5075 2 жыл бұрын
thank you Phil, I really enjoy your videos, u are the best👍👌
@PhilsLab 2 жыл бұрын
Thanks for watching, Mostafa!
@julian7312 Жыл бұрын
Crazy to see someone reduce a whole year of electronics engineering concepts in a 28 minutes video, you are amazing dude !
@PhilsLab Жыл бұрын
Thanks a lot, Julian - glad you found it helpful :)
@biswajit681 2 жыл бұрын
Outstanding video Phill..hope you will cover stability issue with feedback in detailed in future... stability is the most difficult topic to deal with
@PhilsLab 2 жыл бұрын
Thank you very much! Yes, I'm planning on making a whole video dedicated to (negative) feedback.
@francoclsm6251 Жыл бұрын
Thanks, Phil. This video is very helpful!!! I hope more similar videos about EE knowledge will coming on your channel.😁😁😁
@PhilsLab Жыл бұрын
Thank you, Franco - definitely have more EE content planned :)
@dickesf8525 2 жыл бұрын
You really make great videos!
@PhilsLab 2 жыл бұрын
Thank you!
@AndersNielsenAA 2 жыл бұрын
Another good one! Thanks!
@PhilsLab 2 жыл бұрын
Thanks for watching, Anders!
@ndmath 2 жыл бұрын
Great video!
@kapishpotnuru1883 2 жыл бұрын
Great video Thank you very much
@haraldh.9354 Жыл бұрын
thx for this lesson
@greenberet84 Жыл бұрын
Hello!! Great video! A question: how did you measure the gain of the input stage and the voltage gain stage? Using a very very small input in order to not reach the supply rails in the output?
@IONGROZEA Жыл бұрын
Great video, thank you. It will be great if you can make a tutorial for TIA and multistage amplification using op-amp.
@codingspace 2 жыл бұрын
I was searching for these and you uploaded, I think you also got idea from veritasium😀
@PhilsLab 2 жыл бұрын
Glad to hear that :) I actually don't follow Veritasium, but will check it out now that you mention it.
@gino.avanzini 2 жыл бұрын
Wow, this is amazing. Is there any books you recommend for studying this topic?
@Mr.Leeroy 2 жыл бұрын
Yeah, this video fills in a lot of blind spots in such a short duration. And yet it is not overloaded with theory. That's rare.
@PhilsLab 2 жыл бұрын
Thank you, Leeroy!
@seraphin_creates 2 жыл бұрын
Very good video!
@PhilsLab 2 жыл бұрын
Thank you!
@eduardmihailoiu7609 3 ай бұрын
Hi, do you know anything that deals with the design of an operational amplifier? do you know where I can find the version with a differential nmos pair and not pmos?
@suncrafterspielt9479 2 жыл бұрын
Nice Video
@PhilsLab 2 жыл бұрын
Thank you!
@chinmoytahbildar3278 2 жыл бұрын
You are damn good.... Want more videos from you😊
@Techn1cian 2 жыл бұрын
excellent!
@PhilsLab 2 жыл бұрын
Thank you, Nathan!
@jose6417 2 жыл бұрын
Clipping is undesirable unless you want a gnarly overdrive sound, haha! Would be an interesting way to make a hard-clipping circuit or a fuzz of some kind. However, with the usual 9V power rails in a guitar pedal, that would be insanely loud. Great video Phil!
@PhilsLab 2 жыл бұрын
Thank, Jose! Haha yeah would probably sound pretty rough the way it's clipping there but who knows. Definitely wanna make a video on overdrive/distortion in the near future though :)
@kanax2424 2 жыл бұрын
Guten Abend, hast du eine Literaturempfehlung für den Schaltungsdesign? Lg
@ivolol 2 жыл бұрын
I think it might have been useful, to compare the major ballpark "specs" of the opamp you created to a real-world jellybean part, like ua741 or lm358; to give some context to how much better (or worse?) a bog standard IC can be.
@VoltageLP 2 жыл бұрын
Thanks for sharing your knowledge, Phil =) I'm sitting here in Kyiv about 8 miles from the russian positions and soaking it in
@Wtfinc 5 ай бұрын
Im here because im confused about something I realized in an opamp schematic. It was my understanding that one input could accept a positive or negative input voltage, however when I looked at the schematic it was only npn transistor on both input. Npn transistors wont turn on with a negative voltage. So either there is npn and pnp opamps or im missing a trick
@atle5191 2 жыл бұрын
Make a video about Crossover 3 way active by Opam, please!!!
@mateoarv 2 жыл бұрын
Why can't teachers teach like this?
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