All About Frequency Synthesis

[@SuperNHak]

OMG, what a professional level of video and presentation and knowledge, good job man, big respect !! Your voice is awesome for teaching, to be listened to.

[@cornevanzyl5880]

I love your passion. Please never stop what you are doing. Could listen to you the whole day

[@HarleyFXS]

This is great, for years I've been trying to figure out how to get any frequency division. I once make a plotter and had to figure a way to make a vector with numbers that didn't come out even and this is the secret to this also. I will have to try this. TY!

[@friosminsysnym]

This is explainatory! I mean most of videos on KZbin dive right into PPL without enough motivation behind. Thanks for your effort!! :)

[@hawkkim1974]

I don't know why it came up to me but I was truly amazed by the easy friendly kind explanation of this video. I'll really try to buy chips from Maxim whenever possible.

[@tnowroz]

Great video, worth watching every seconds for refresher of PLL. THANKS!

[@prman1403]

Really well-scripted and well-presented video... just what I needed - thanks!

[@buckbrown823]

Thank you! Very professional help that an amateur hobbyist can grasp and understand.

[@jj74qformerlyjailbreak3]

Well I know more than I did before. I wouldn’t say I know all about frequency synthesis, or PLLs yet. I might need to watch this once a day for a week. Then I’ll lock in an answer. See you then.

[@billmoran3812]

Finally! I get it now. I knew about fractional N dividers, but couldn’t understand how they work to synthesize frequency.

[@bambambam135]

seriously such a great video, ty for great lecture.

[@SCWood]

THANK YOU MAN!!!! I've been wanting to make an analog fractional pitch shifting pedal for a while now. Now I can!

[@Parirash123]

Give a medal 🥇 to the narrator

[@CqGD4Yi8fii1CYPa]

I could be wrong, but ... check out the narrator for the Moss Motors, Ltd.channel. The narrator is the same for most of the Moss Motors, Ltd. videos--the ones featuring the POV and hands. The audio quality varies between the videos, but try the video entitled, "Crankshaft Details for Moss# 451-485 and General Information". I think it is the same narrator as here with Maxim Integrated (and possibly the same script writer). An esoteric observation? Yup, but this guy has a vocal gift.

[@bonbonpony]

24:34 Can you tell some examples of such prescalers? Are there any parts that one could buy for a certain range of frequencies?

[@ppugalia6492]

A ton of knowledge in just 30 mins! 😎 Now I am gonna make my own GHz transceiver.

[@hoia31]

did you end up making the transceiver?

[@johnwick5901]

Did you do it?

[@7yep4336dfgvvh]

Bro did you do it?

[@SergeSeeTube]

Best explanation I've found! Thanks!

[@CatFish107]

I stumbled in as someone interested in making sounds and or music with electronics. Both the term clock and oscillator make sense to me for these purposes.

[@CatFish107]

Uh, the PLL module I was eyeballing for my rack will be run in the tens to thousands of Hertz, none of this MHz stuff.

[@brandynalbrecht772]

Hey could you do a video of the Delay Locked Loop used in GPS systems, and explain the concepts of the Ring Oscillator, Multiplexing process, and Chain/Delay system in it? Thanks

[@nidhinbenny7975]

Hi guys, I don't understand - what if our VCO is limited to producing only a narrow range of frequencies - say 910-920 MHz. Since we always take our output from the output of the VCO, no matter what we do inside the loop, the range of frequencies that can be generated is only 910-920, right? So the divide by N circuit would not be able to produce say a 300 MHz signal if I set N=3?

[@hwansupark8955]

This is amazing content. Thanks much!!

[@Ruhgtfo]

Nice content any higher resolution for this?

[@7yep4336dfgvvh]

My thoughts exactly

[@Ruhgtfo]

@@7yep4336dfgvvh How to pay you the idea patentist fee

[@emreeroglu6976]

Really helpful for newiee! Thx man

[@AnalogDude_]

That's a very good video, thanks you for the info.

[@kamalibrahim7322]

Thank you for so informative video :)

[@hanuma8658]

what if the duty cycle of the frequency divider has unequal on and off time i.e, (not having 50% dutycycle) , how it effects the pll at the phase detector

[@odissey2]

There will be a phase jitter. Basically, every time you select a fractional coefficient, the output is not precise

[@OzDizzer]

Great content, just a shame it was only uploaded at 240p.

[@aussieboy77]

Yeah, the resolution is shocking.

[@odissey2]

Must be an effect of a fractional divider

[@MrVipulLal]

Great video. Many thanks

[@retro-meister]

Excellent video

[@sullivanzheng9586]

Looks like jitter will be quite obvious if fractional divider is used?

[@odissey2]

Yes

[@menedenz8774]

Well explained, Can you send me the PowerPoint file, I need to do a presentation on PLL, and all my knowledge about this topic were combined in one single video that is yours, so I'm wishing your approval to send it to me

[@koggism]

I see you start the vid with a demo of a analogue pll then quietly switched to a digital pll

[@omsingharjit]

That's where i was lost...

[@lelsewherelelsewhere9435]

Do you mean at around 20 min when he uses a XOR gate with an analog signal? You can use digital components with analogue signals. He explains this: the NOT gates in the beginning of the XOR gate "converts" the sine waves into square waves, then compares these. Look up "Tayloe demodulator". It uses a series of digital gates to "switch around", compare, and "chop up" analog RF signals very well!

[@reinhardkrisam4979]

Great video

[@omsingharjit]

Awesome knowledge source

[@maximintegrated]

Glad you think so!

[@charlesgeorge85]

if we re using flip-flops/counters for frequency division, for odd frequencies how will we get 50% duty-cycle clock

[@freundron]

See video by "Technical Bytes" here: kzbin.info/www/bejne/mZfKhZ6facmtgtU

[@seditt5146]

7:10 "Such an oscillator is practically unavailable" , Not just practically but 100% impossible. Its literally what the Uncertainty principle of Quantum mechanics is telling us. We can't know the frequency, phase and amplitude at the same time ever. It's basically a mathematical proof showing you never know when you are at peek Amplitude meaning you are never fully sure of what your frequency is as you need to know when the wave starts to go back down before you could even begin to know its frequency and the greater you know one value the less you know about the other. Its actually a pretty cool piece of math when you really understand it in the right terms.

[@espenbgh2540]

It would have been much helpfull with a real eksample with logic-circuit representation istead of the one used

[@egeotomasyon]

Congratulation for 240p resolution!

[@duality4y]

you can truly seen the analog in the video.

[@yannis3756]

What about DDS ?

[@bdelectr7411]

Wow this is great.

[@elijahjflowers]

Thank you.

[@sid.sulton2508]

11:17

[@himanshumahara5324]

Excellent!!

[@maximintegrated]

Glad you like it!

[@ajayr2591]

Why two signals are 90 degrees out of phase?????

[@diggleboy]

Any RC or LC network that a signal that passes through it will change the phase ahead or backwards because it will introduce some impedance at a given frequency. You will have some attenuation and a phase shift for a given frequency. This phase shift represents the 'imaginary' part of the equation for calculating impedance and phase of a complex RF signal (eg. R + j degrees). The math explains this fully.

[@diggleboy]

Here's a great explanation for you with the math to verify why there's a phase shift at the output: sciencing.com/calculate-phase-shift-5157754.html

[@johnwick5901]

@@diggleboy thanks dude! It's been helpful. You on FB?

[@juliojaciuk5191]

ITS GREAT..!!

[@Dreadwinner]

💗

[@azeemimtiaz4547]

not very clear explaination