Lecture 4 - Analog frontends and filters

Рет қаралды 686

Күн бұрын

Lecture Notes: analogicus.com/aic2024/2024/0...
Transistors: github.com/wulffern/cnr_atr_s...
analogicus.com/cnr_atr_sky130nm/
00:00 Introduction
02:05 Analog to digital
09:25 Filters
12:46 Gm-C
18:30 Active-RC
27:20 My Favorite OTA
34:05 Sizing transistors

Пікірлер: 12

@chipacharya 5 ай бұрын

Thank for sharing! May I know which software you have used for video editing?

@analogicus 5 ай бұрын

I use obsproject.com and sometimes shotcut.org when I feel the need to re-align the audio. I'm using an old Nikon D5100 with a HDMI capture board which is not the most consistent when it comes to video delay.

@chipacharya 5 ай бұрын

@@analogicus Thank you so much for your time and kind reply!

@josephalbers5670 6 ай бұрын

hi, thanks for these videos, especially with open source tools. I'm just doing my master in EE focusing on AIC. I would be curious about more system level design and how you would approach it in general. for example I recently read a white paper from Neuralink published in 2019 ("An Integrated Brain-Machine Interface Platform With Thousands of Channels"). In Table 1 you can see the general specs of the IC they designed for their prototype. it would be interesting to see how you would approach a system level design that would have similar specs as the one shown in the paper. how would the architecture look like? I'm very new to AIC, so please forgive my ignorance. very much looking forward to new videos ✌

@analogicus 6 ай бұрын

The first thing I would look at would be the impedance of the probe. Understanding the "sensor" part is the key to designing the rest of the recieve chain. Given Table 1 my rough guess would be that the recieve chain (including ADC) is probably on the order of a few hundred schematic pages (including power management and bias). I would expect the recieve chain to look quite similar to the recieve chain of a radio without the mixers.

@samvenker3137 5 ай бұрын

Good design, but I don't think your bias for the op-amp is very optimal for biasing of cascode devices.

@analogicus 5 ай бұрын

Ok. Feel free to fork and improve the design.

@rezapapi6544 6 ай бұрын

Thanks for the videos and lectures. It would be great if you could upload videos in higher quality. Since you mentioned designing an Incremental ADC at Nordic Semiconductor, I'd find it interesting if you could give a lecture on the system and circuit design of these ADCs. It would be helpful if you could walk through the system design using the delta sigma toolbox and discuss the schematic. Additionally, could you provide more details about the transistors used in designing the OTA? Thanks again for the informative lectures.

@getusel 6 ай бұрын

In case you do not know, the professor has posted a lot of lecture materials on his website.

@rezapapi6544 6 ай бұрын

@@getusel can you please tell me which lecture you’re referring to?

@analogicus 6 ай бұрын

Might be this one analogicus.com/aic2023/2023/02/16/Lecture-6-Oversampling-and-Sigma-Delta-ADCs.html , but I don't think I have anything on the delta sigma toolbox.

@rezapapi6544 5 ай бұрын

@@analogicus Thank you Professor.