Analog-to-Digital Converters (ADC) - Charge-Balancing and Delta-Sigma ADC

[@ife.tugraz]

This video is part of the second course of our *ElectrONiX* massive open online course (MOOC) series. You can sign up for the course *ElectrONiX - Digital* for free on the following link: imoox.at/course/digital ElectrONiX MOOC series: imoox.at/series/electronix

[@d4rcym]

The cafe analogy is genius. how have I never seen that before! Thank you :)

[@ife.tugraz]

We are glad you like it :) Often pictorial descriptions help to comprehend such complex things more easily.

[@Vitonolable]

I love it! Engineer has to stay caffinated to get through the day!

[@준형김-q1x]

Thanks to Michael and his colleagues for making this video. 😊😊😊 I couldn't unsubscribe. ❤❤❤

[@ife.tugraz]

You are welcome. We are happy, that you like our channel :)

[@inspecteurthierryroland3690]

This video is so well made, that's a shame it hasn't more views. Anyway thank you, i have a project at school to present delta-sigma modulator and this video really explain the basics in an understandable way, with good diagramm and good analogy (coffe shop is awesome).

[@ife.tugraz]

Thank you for your feedback. We are glad you like it :) Feel free to share and recommend our videos to others. Additionally we also develop a massive open online course series. The first course on amplifiers already started and is available at [1]. [1] imoox.at/mooc/local/landingpage/course.php?shortname=amps&lang=en

[@onelivingsoul2962]

Great videos/knowledge related videos are Not meant to garner views like the cheap videos does.

[@funwithy]

…sehr guter Kanal. Macht weiter so.Sehr verständlich 👍🏻👍🏻👍🏻

[@amanjonathanprakash1044]

thank you for the crystal clear explanation. Very helpful

[@Vitonolable]

This is such a great explanation, thank you for putting so much effort.

[@ife.tugraz]

We are glad that you like our videos :)

[@danm5551]

Congrats!. Your presentation is very good, since avoids complicated maths, understandable for not very high skilled but interested people as well. Great job!

[@tarungarg15]

Amazing explanation!

[@mmh1922]

Excellent presentation!

[@ife.tugraz]

Thank you very much :)

[@SachinSingh-md6kv]

very well explained

[@ajayraj-zj4ql]

Wow very interesting 🎉

[@tranhuuthong07]

Great tutorial. Thank you so much!

[@tarihad1145]

many thanks for this informative and cristal clear explanations

[@ife.tugraz]

You're welcome :)

[@Hexor1211]

The only thing missing, and what I'm searching, is about how and at what point of the ADC system there is a transition from single bit data to multiple bits of data. For example, how you get from single bit stream to 16 bit audio

[@ife.tugraz]

Thank you for your question, that is indeed a very important question to fully understand Sigma-Delta ADCs. We can recommend, that you have a look at this website: www.analog.com/en/design-center/interactive-design-tools/sigma-delta-adc-tutorial.html There you can find a nice tool to "reproduce" the behaviour of a sigma-delta ADC step-by-step. In the example on the bottom of the website, they use a bit-stream which is 8-bit long, Vin=1.0V and Vref=2.5V. They receive a bit-stream of 1 0 1 1 1 0 1 1. We can see, that 6 of 8 outputs are high and 2 of 8 outputs are low. This means, that 75% of all outputs are high. Translating this back to a voltage would mean, that we are at 75% of the input range (in this case between -2.5V and +2.5V). Calculation gives Vout=-2.5V+5V*0.75=1.25V. If we are looking for a digital value: As we have 8 bits in the (unary) stream, this corresponds to 3 bits (=log2(8)) in a binary representation. In our case it would mean, that we would get a digital output value of 110 or 6 in decimal. Some more examples to understand the concept: unary -> binary 00000000 -> 000 10000000 -> 001 00000001 -> 001 00010000 -> 001 01010101 -> 100 10101010 -> 100 We hope this help in understanding the concept :)

[@kabandajamir9844]

So nice thanks sir

[@apurvpandey1627]

Can we design TRNG using this?

[@ife.tugraz]

In this video we only focussed on the basic principle of Sigma-Delta ADCs. Your question however, whether we can build a True Random Number Generator (TRNG) with these ADCs, is quite straightforward. It seems like there is some research [1], [2] ongoing in this topic, but we do not have any research experience there. So we would recommend having a look at current literature. [1] doi.org/10.1109/LSSC.2020.3010901 [2] doi.org/10.1109/ISCAS.2016.7527159

[@dcy1936]

🤝👍

[@cahitskttaramal3152]

everybody tells one bit modulator which is useless to comprehend the issue

[@ife.tugraz]

Thank you for your feedback. How would you prefer to describe it?