I am an IO design engineer, with my experience I could say just like B. razavi you are one of the fabulous teacher!! Thank you so much for explaining so beautifully..
very nice video！I have learn something from your videos. If you don't mind, I want to ask your permission to share these videos(about I/O ESD) to the website in China for the reason that UA-cam is blocked from accessing in China. Of course, I will give sources of the original website. Thank you very much!
@@analoglayoutdesign2342 (low-to-high level shifter) When input changes its value, there is a fighting between I/O PFET and I/O NFET. In that case, I/O NFET should be stronger than I/O PFET. Therefore, worst condition is when NFET is slow and PFET is fast. So, I/O NFET size is much bigger than I/O PFET size in low-to-high level shifter. Thank you.
Drivers are a series of inverters...also called tapered buffers... Level shifters only reliably shift signal levels...they don't have obligation of driving big capacitive loads... Please go thru esd part2 part3 videos...it's covered
Hello sir, I am wondering why we have to use High-to-Low level shifter circuit instead of simple voltage divider resistor circuit? I am assuming it's about safety and reliability but I don't know the technical reason why. Thanks in advance
When we use resistor divider, it consumes static current…also.. area occupied is higher… also loading effect is a concern… cmos is ideally zero static current…in high to low level shifter we use high voltage devices..or thick gate oxide devices…hence it’s reliable…
ESD generally occurs when a person touches the ic by hand before or at the time of soldering it to pcb.. once powered one will not touch the ic by hand without insulating himself.. this is my view.. and even in such condition the same protection should work.. Generally in labs while testing any pcb, the bench is also properly esd protected. And also the person who is handling the pcb , puts on a esd suit and footwear..
@@analoglayoutdesign2342 Thanks for your videos! Unfortunately I couldn't find the part that is related to Driver and Pre drivers too! Could you please let us know which video contains the Driver and Pre drivers explanations?
Sure... the only intention of repeating it, is to reinforce the matter so that it stays in mind for ever...but I will take care in future... thanks for the feedback...
@@calypso8883 Understood. But, also wanted to give an advice when you(or I) point out something to someone that we need to consider his efforts without any monetary benefits. :-)
I am an IO design engineer, with my experience I could say just like B. razavi you are one of the fabulous teacher!! Thank you so much for explaining so beautifully..
Thanks for the feedback
Wonderful explanation. Immediately subscribed. Thanks alot for sharing..!!!
explained very well sir...Thank you sir.
Really excellent content. Should be a university course to let students know a world out side physical design itself is an industry.
Thanks for the feedback
which diode is choose in the cadence?
please make some video on cadence
please......its my request
Thanks for the video sir.. eagerly waiting for upcoming videos...
Sure...
Thank you, Sir, you helped lots of students...
Sir it’s very easy to understand even for a beginner, thank your for your lectures 🙏
beautifully explained sir, thanks a lot. Please make a video on density errors.
sure
Great explanation! Thanks a lot for the content 😊!
Thanks for the feedback
Not a solder ball. Typical materials used for wire bonding are copper and gold.
That’s right..
Very nice vedio sir
Very nice, Thanks
very nice video！I have learn something from your videos.
If you don't mind, I want to ask your permission to share these videos(about I/O ESD) to the website in China for the reason that UA-cam is blocked from accessing in China. Of course, I will give sources of the original website. Thank you very much!
The worst condition is as follows. vddl:low, vddh:high, NFET:slow, PFET:fast
Always cross corners are the worst… also there are multiple supplies here
@@analoglayoutdesign2342 (low-to-high level shifter) When input changes its value, there is a fighting between I/O PFET and I/O NFET. In that case, I/O NFET should be stronger than I/O PFET. Therefore, worst condition is when NFET is slow and PFET is fast. So, I/O NFET size is much bigger than I/O PFET size in low-to-high level shifter. Thank you.
Nice Explanation!
Driver and Pre drivers explanations? are level shifters only drivers and pre-drivers?
Drivers are a series of inverters...also called tapered buffers...
Level shifters only reliably shift signal levels...they don't have obligation of driving big capacitive loads...
Please go thru esd part2 part3 videos...it's covered
amazing explanation sir...
Hello sir, I am wondering why we have to use High-to-Low level shifter circuit instead of simple voltage divider resistor circuit?
I am assuming it's about safety and reliability but I don't know the technical reason why.
Thanks in advance
When we use resistor divider, it consumes static current…also.. area occupied is higher… also loading effect is a concern… cmos is ideally zero static current…in high to low level shifter we use high voltage devices..or thick gate oxide devices…hence it’s reliable…
@@analoglayoutdesign2342 Thank you very much sir for the explanation, it makes a lot of sense. Now I'll review next about loading effect.
Please do make a video on Antenna effect & STI/LOD
Will plan.. thanks for your suggestion
Hi Sir,
Will there be a chance of esd event during power on condition... If yes how can we protect the IC.
Thanks in advance
ESD generally occurs when a person touches the ic by hand before or at the time of soldering it to pcb.. once powered one will not touch the ic by hand without insulating himself.. this is my view.. and even in such condition the same protection should work..
Generally in labs while testing any pcb, the bench is also properly esd protected. And also the person who is handling the pcb , puts on a esd suit and footwear..
Thanks for amazing video sir!!
Hi sir, Driver and Pre driver explaination is missing in this video. Can you make one video on it.
please go thru all esd videos
@@analoglayoutdesign2342 Thanks for your videos! Unfortunately I couldn't find the part that is related to Driver and Pre drivers too! Could you please let us know which video contains the Driver and Pre drivers explanations?
Thankyou Sir
Thanks a lot
hi sir ,can u please explain about EM
Sure
Sir, kindly don't repeat same sentence multiple times. Make it compact and informative.
Sure... the only intention of repeating it, is to reinforce the matter so that it stays in mind for ever...but I will take care in future... thanks for the feedback...
You don't have to complain about it since you got this very nice lecture 'free.' Think about how much he spends his time...
@@analoglayoutdesign2342 Thanks a lot Sir!
@@semifolk9295 it's a feedback to improve his work. Kindly understand the point of view before replying with negative mind. Be well.
@@calypso8883 Understood. But, also wanted to give an advice when you(or I) point out something to someone that we need to consider his efforts without any monetary benefits. :-)