First Module Designs

A project log for ADA2200 Lock-In Amplifier

This project will attempt to explore and explain the use of the Analog Devices ADA2200 to build Lock-in Amplifiers.

doctekdoctek 12/23/2017 at 04:522 Comments

The designs for the first modules just shipped to OSH Park and parts are on order from Digikey!

The more I thought about these modules, the simpler they got - at least these first versions. The ADA2200 break out just has that device, a few decoupling caps, and an output filter. Modules were designed for the two noise sources - basically just copying the designs given in the articles. The final module is just a break-out for a dual, single-supply opamp. There are several suitable opamps that could be used including TS922, LMV772, OPA2376, and ADA4528-2. Spend as much or as little as you like! Using this break-out, it should be possible to build filters, summers, and level shifters as needed on a breadboard.

Another module that I'm eager to create is a programmable gain amplifier. I have some circuits to look at that will provide guidance, but I wanted to get these first modules built so experimentation can begin. PDFs of the schematics are in the Files section (or soon will be). KiCAD files are available if anyone wants them.


doctek wrote 07/28/2019 at 22:15 point

Thanks for your interest! The designs for all the boards for this project are now shared on OSHPark. Look under "doctek".

This is the first time I've tried to share on OSHPark, so if you don't find what you need, please let me know.

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Donnie Agema wrote 07/28/2019 at 13:23 point

Hi! I am interested. Would you care to share your PCB modules on OSHPark?

I see the modules are now shared in OSHPark - thanks for that!

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