We were recently tipped off to quite a resource — on the Texas Instruments website, there’s a page where you can view and download a compendium of analog sub-circuits.
Individual circuits can be downloaded in the form of PDF files. If you chose to register (which is free), you’ll also gain access to the pair of e-books listed at the bottom of the page: Analog Engineer’s Circuit Cookbook: Amplifiers and Analog Engineer’s Circuit Cookbook: Data Converters. The data converter circuits can be further subdivided into analog-to-digital converter (ADC) circuits and digital-to-analog converter (DAC) circuits.
There are more than 60 amplifier circuits including basic circuits, current sensing circuits, signal sources, current sources, filters, non-linear circuits (rectifiers/clamps/peak detectors), signal conditioning, comparators, sensor acquisition, audio, and integrated amplifier circuits using MSP430 microcontrollers.
You’ll also find 39 analog-to-digital converter (ADC) circuits including low-power, small size, and cost optimized circuits; level translation and input drive circuits; low-level sensor input circuits; input protection, filtering and isolation circuits; and commonly used auxiliary circuits. Finally, there are 15 digital-to-analog converter (DAC) circuits including audio outputs, auxiliary and biasing circuits, current sources, and voltage sources.
Thanks to [Lee Leduc] for letting us know over on the EEVblog Forum.
Remember: Only YOU can ensure sub-circuit stability in your analog designs! (Do not assume that any or all provided application circuits have been assessed for phase margin.)
Don’t forget the Analog Engineer’s Pocket Reference Guide
https://www.ti.com/product-category/amplifiers/analog-engineers-pocket-reference-guide.html?keyMatch=analog%20engineers%20pocket%20reference%20e-book&tisearch=universal_search
I am NOT a fan of sites requiring registration in exchange for information.
Just tactics are for future marketing emails and product spam.
Hackaday needs to preface the dialog with REGISTRATION REQUIRED.
So use a throwaway address like Guerrilla Mail?
Maybe that’s just for some of the sub-pages? I didn’t need to register to view anything.
Looks like John Elliott V took your advice and included this text in the article “If you chose to register (which is free)”
:)
Or maybe you should just read all the dialog … where it clearly states that.
Completely irrelevant and off topic:
“John Elliott V”, so . . . Johnny Five?
lol. Johnny Five is alive! More input Stephanie! ;)
Analog Devices and formerly Linear Technology have fantastic books about analog design. The best thing is that books are freely available. Here is one example Linear Circuit Design Handbook https://www.analog.com/en/resources/technical-books/linear-circuit-design-handbook.html
If you build according to the application note and it fails, you might not be the problem I once called the author of an application note:
“We couldn’t make it work.” Direct quote. Also note that given increasing AI use, it’s quite possible that you’re the first builder and it was never even simulated
Times and tools have changed
If the circuit is complex, you can try uploading an image to an AI (e.g. Claude) that supports image uploading and ask if to generate a net list
You can also ask the ÀI for help in troubleshooting Can it do analog simulation!?
Try to be precise In your request prompts and in what you expect from output
“This machine has no brain, use your own “
If you want the good stuff, go to Analog for the “Applications Manual for Computing Amplifiers for Modeling, Measuring, Manipulating, and Much Else”:
https://www.analog.com/en/resources/technical-books/applications-manual-computing-amplifiers.html
Excellent source, thank you for sharing!
I wonder if it has any circuits for level shifting. Do I want to sign up to find out… Hmm… Can anyone let me know?
Open the link and search for “Level translation”. There are a bunch of documents. I think you can download those documents without registering for an account.
For all those of there hesitant to stick your email address only places like this, http://www.spamgourmet.com is your friend.
I’ve used it for literally decades.
Most of these circuits came from the National Semiconductor OP Amp handbooks. Search for AN-20 and AN-31. They have those and more in a PDF form that you don’t have to register for. Very useful book back in days.