NCOs are everywhere - here's how to make one using an FPGA

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NCOs are everywhere - here's how to make one using an FPGA

Рет қаралды 11,371

Visual Electric

Күн бұрын

Пікірлер: 20

@duncandewaal7022 3 жыл бұрын

One of the best explanations I have seen thus far. Good job.

@DavidTobasura 24 күн бұрын

Excellent video, thank you for this clear explanation!

@joelstyer5792 Жыл бұрын

This was a very good explanation, very clear and concise for anyone familiar with Quartus. I've been using Altera (now Intel) parts since the late 1980s (with A Plus and later Max Plus then Quartus). For anyone else watching, yeah, it really is that simple to add a PLL which I tend to do for most designs. I have only rolled my own NCO with DPRAM Lookup tables (to change the output waveform) but found this very interesting to watch. Looking forward to other Intel FPGA videos.

@andrewphillip8432 3 жыл бұрын

I’m interested in learning FPGA. Is the cyclone V kit a good way to start? I haven’t done much research yet but I hope to run similar algorithms to what you have shown on this channel, especially FFT.

@kevinamonteverde 5 ай бұрын

Hi... Thanks so much for this video. I'm using FPGAS for the first time and this is super useful for my research work... One question: Is there a way to control the frequency/phase in real time? Here i see it's hardcoded, I think.

@jrstf Жыл бұрын

I would expect the 8 bit resolution of the picoscope to produce the harmonics you were seeing along with all that noise.

@tiagoogionicostalonga7777 2 жыл бұрын

Thanks a lot for this great explanation! It helped me a lot in my research... I have just one question... whats is the maximum output frequency i can set up in NCO? It depends on my FPGA?

@VisualElectric_ 2 жыл бұрын

It will depend on the clock frequency. In a mid-range FPGA, you could set the clock at 100-200 MHz and then output a 10-20 MHz sinusoidal wave with 10 samples per period (reasonable quality). If you push too high, the waveform starts to look like a staircase, but theoretically, you could go right up to Nyquist.

@tiagoogionicostalonga7777 Жыл бұрын

@@VisualElectric_ Thank you... just one more question... how to set up the amplitude of the wave?

@jrstf Жыл бұрын

@@tiagoogionicostalonga7777 - External linear amplifier, with DC offset adjustment, if you can. Doing it in the digital domain reduces the resolution of the DAC and you still need to add in a DC offset to remove the DC component which you presumably can't do digitally.

@miladaslanian 4 ай бұрын

Hello. It was great. Is it possible to send us a video about vivado or vitis and explain about NCO?

@navneetsingh5529 3 жыл бұрын

Which version of quarts prime do u use, pro or standard?

@michaelpierce3264 2 жыл бұрын

interesting that the alpha Juno oscillators are based on this

@noel101082 Жыл бұрын

Are you from Newport by any chance?

@VisualElectric_ Жыл бұрын

No, but I am from Wales

@noel101082 Жыл бұрын

@@VisualElectric_ u actually sound like amate of mine from cwmbran but i always thought he sounded like he was from zooport. used to have a recording studio in Blaina.

@satviksharma3722 2 жыл бұрын

EPIC!!!

@hightlightlol2106 2 жыл бұрын

have you ever tried feed output of ADC to input of DAC on the same ADA board? I tried it but got notthin! Just simple that I connect the output of ADC to input of DAC to observe the S21 of the system, it should return the same input as the output but I got notthing at the output. The modes are set correctly on both ADC and DAC, they used the same master clk It will be great if you give me an email, I would like to ask you some questions

@VisualElectric_ 2 жыл бұрын

I've done this many times. The usual suspect is the wrong pin assignments. I cracked it in the beginning by using the example that comes with the THDB-ADA board.

@hightlightlol2106 2 жыл бұрын

@@VisualElectric_ I have done this too, I cracked the example, turned out that the powerdown funct pin needed to set to 1 to get them work!