This project is based on the IL715 digital isolator chip, manufactured by NVE Corporation. This is a simple isolator schematic and a PCB.
Here is the technical datasheet for this chip:
The IC is pretty easy to use. They made the pinout as suitable as it can be. For this project I decided to make a sort of an adapter PCB which can be mounted on suitable female headers to the main PCB. I also decided to put a local voltage regulation just to be on the safe side. Local voltage regulation is proven to a good practice. I’m not quite sure if it serves a good purpose in this particular project but it does no harm either 😉
Of course from the datasheet you can see that there are several variants to this chip depending on the needs. The PCB itself does not change so it’s suitable for all the types. For example when doing a local reclocking near the DAC ship and driving a master clock directly to the DAC’s form external master clock source, you will need to send this clock back to the digital part of the system. This one will feed the digital filter and the servo processor(and of course all the other IC’s that need a clock supply). In this case you can use IL717 IC.
The schematic itself is pretty straightforward as the application is a no challenge to any designer. This is what it looks like:
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| IL715, IL716, IL717 DIGITAL ISOLATOR SCHEMATIC |
And this is the PCB:
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| IL715, IL716, IL717 DIGITAL ISOLATOR PCB |
The complete manufacturing files are available for download HERE
This project is provided to the DIY community for free. Commercial use is not allowed!
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