Whiteboard Series. Analog Devices Matt Duff talks about Multi Pole Filters with Sallen-Key topology. Watch the 'Filtering 101: Active vs. Passive' Video
I searched the net for an hour trying to find out exactly what a Sallen Key filter does and you told me in concise, simple terms in 30 seconds!. Thank you!
I love these videos. They're so clear and concise! A really nice addendum to my education. I love my school but it lacks in RF, which is my passion. Thanks so much for making these great videos for us.
You have to make more videos about filters and analog electronics ! I learned more seeing this short video, than reading about the same in a book for 3 hours . Thanks
Hi Miks, Thank you for your interest in our videos. So far we've created 4 Filtering videos (search RUclips for 'Filtering 101 Whiteboard'). Let me know what other filters would you like to see?
We are making another round of whiteboard videos in April that will include your suggestions. I'll let you know when they go live. Thanks for your inputs!
@jasq88 You are welcome and we are glad the you found it useful! You might also be interested in this... we just created a 'Thermocople 101' series that contains 8 videos.
Hi Steven, thanks for the post! We created a new series called 'Stability 101'. Search RUclips for "Stability 101 Whiteboard" and a playlist of 5 videos will appear in the results page.
hi. i would like to see more on filter types like butterworth, bessel etc. how the coefficients change, what are phase/group delay relationships and more. that could be really interesting. thank you
Hi, great video! I've got a question about op-amp selection. How does the opamp bandwidth and slew rate influence the filter operation. Ex.Can I use AD8606 (10 Mhz, 5V/us) to filter a 20 MHz PWM? Thanks
Hi Mihai, This is a more involved answer than Google's 500 characters allows. Quick rules of thumb for good performance: op amp gain bandwidth > 100 * filter cutoff * filter gain * Q op amp slew rate > peak voltage at op amp output * max frequency where peak occurs * 2 π ADI will have filter tool coming out in a month or so that will give more insights into your question. I'll post another reply here when it's ready.
Just wanted to let everyone know we now have a filter tool where you can play around with filters. Go to the ADI homepage and click the filter icon that is on the right hand side of the screen, middle of the page. Or Google "filter wizard 2.0". We also have a video tutorial on it which you can find if you put "analog filter wizard" in the youtube search field.
A 400 level course I took in EE 8 years ago... this is interesting and all but what are the applications of Sallen KEY and Chdbyshev characteristics. I feel like maybe in baseband filters?
Hello, Unfortunately, I don't have an answer for this question. Please ask it on our online technical community, EngineerZone located at ez dot analog dot com. Thank you.
One way to get gains lower than 1 is to replace R1 with a voltage divider. This voltage divider should have the attenuation you want and an output resistance of R1. (Remember output resistance of a voltage divider is its two resistors in parallel.) For example, let's say your Sallen Key equations call for a 1 kohm resistor for R1. To get a gain of 1/2, replace R1 with a voltage divider consisting of two 2 kohm resistors.
I don't know if you've seen this, but Matt created a Thermocouple 101 series; the 8 videos are located here goo(dot)gl(slash)IKDIk Let me know it you like the Thermocouple series. Thank you.
Hello! Good video. I'm learning and exploring filters. At first it was very unclear, but when I watched the video I became closer to understanding. There is one thing that I cannot understand and it haunts me. Explain the role of capacitor C1. I can not understand. Thank you.
Наука
Hi Jamie, thanks for the positive feedback and we are happy to hear that you found this video useful!
I searched the net for an hour trying to find out exactly what a Sallen Key filter does and you told me in concise, simple terms in 30 seconds!. Thank you!
I love these videos. They're so clear and concise! A really nice addendum to my education. I love my school but it lacks in RF, which is my passion. Thanks so much for making these great videos for us.
You have to make more videos about filters and analog electronics !
I learned more seeing this short video, than reading about the same in a book for 3 hours .
Thanks
Thank you and we are glad that you found this useful.
Thanks for the feedback. We're glad to hear that these videos helped you better understand Filtering.
Hi Matt Duff.., Very well explained. Thank you..!
Thank you. We are glad that you like the video.
Into fundamentals. Very nice video. Cleared my questions. Thank you
GREAT!!! Thanks for this video is really good and its amazing how you explain in few minutes the sallen key configuration.
You are quite welcome! We are happy to hear that you found this video helpful.
Hi Miks, Thank you for your interest in our videos. So far we've created 4 Filtering videos (search RUclips for 'Filtering 101 Whiteboard'). Let me know what other filters would you like to see?
We are making another round of whiteboard videos in April that will include your suggestions. I'll let you know when they go live. Thanks for your inputs!
Matt this video is just great. Thank you
Great video! Thank you.
You make difficult thing which I've learn for along time to easy.
Thanks.
Thanks for uploading this video it's helps me a lot !
these videos are great!
@jasq88 You are welcome and we are glad the you found it useful!
You might also be interested in this... we just created a 'Thermocople 101' series that contains 8 videos.
vey well explained thank you so much !!!
We've now added more Sallen Key videos. Search for "Sallen Key 101" or see playlist here:
ruclips.net/p/PLiwaj4qabLWxp1kilM2Pa6H-db8zygpNo
Always a fun, I liked the way you explained the Q, simple and straight forward. Can you do a video on RC oscillator that uses op-amp?
Thanks for this video.
could you do more on filter types? this is very helpful :) thank you
Hi Steven, thanks for the post! We created a new series called 'Stability 101'. Search RUclips for "Stability 101 Whiteboard" and a playlist of 5 videos will appear in the results page.
Very informative.
Looking for a video that shows how to design a High pass Sallen-Key filter with gain
great explanations.
hi.
i would like to see more on filter types like butterworth, bessel etc. how the coefficients change, what are phase/group delay relationships and more. that could be really interesting. thank you
We want more tutorials from Matt.
Matt, u rock!
Hi, great video! I've got a question about op-amp selection. How does the opamp bandwidth and slew rate influence the filter operation. Ex.Can I use AD8606 (10 Mhz, 5V/us) to filter a 20 MHz PWM?
Thanks
Nice explanation without a lot of unnecessary complexity.
Hi Mihai,
This is a more involved answer than Google's 500 characters allows.
Quick rules of thumb for good performance:
op amp gain bandwidth > 100 * filter cutoff * filter gain * Q
op amp slew rate > peak voltage at op amp output * max frequency where peak occurs * 2 π
ADI will have filter tool coming out in a month or so that will give more insights into your question. I'll post another reply here when it's ready.
Very useful!
Thank you
Just wanted to let everyone know we now have a filter tool where you can play around with filters. Go to the ADI homepage and click the filter icon that is on the right hand side of the screen, middle of the page. Or Google "filter wizard 2.0". We also have a video tutorial on it which you can find if you put "analog filter wizard" in the youtube search field.
A 400 level course I took in EE 8 years ago... this is interesting and all but what are the applications of Sallen KEY and Chdbyshev characteristics. I feel like maybe in baseband filters?
Hello, Unfortunately, I don't have an answer for this question. Please ask it on our online technical community, EngineerZone located at ez dot analog dot com. Thank you.
sir way we use +very feedback here
thank you...
One way to get gains lower than 1 is to replace R1 with a voltage divider. This voltage divider should have the attenuation you want and an output resistance of R1. (Remember output resistance of a voltage divider is its two resistors in parallel.) For example, let's say your Sallen Key equations call for a 1 kohm resistor for R1. To get a gain of 1/2, replace R1 with a voltage divider consisting of two 2 kohm resistors.
I don't know if you've seen this, but Matt created a Thermocouple 101 series; the 8 videos are located here goo(dot)gl(slash)IKDIk Let me know it you like the Thermocouple series. Thank you.
@3:12"my cut off frequency will be 6dB down" might be an oops.
two-pole system so if the poles are equal I believe that's correct
thank u darling u help me a lot
i love you
Чёткий пацанчик. И одет очень правильно.
Hello! Good video. I'm learning and exploring filters. At first it was very unclear, but when I watched the video I became closer to understanding. There is one thing that I cannot understand and it haunts me. Explain the role of capacitor C1. I can not understand. Thank you.