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TIDA-00835: Board Spectral Response and System Compatibility.

Part Number: TIDA-00835

Hello, I have been looking into potential designs that could be suitable for my system and the 00835 and 00555 series seems applicable.

My system includes a microcontroller which needs to capture 3 phase voltage waveforms from the power grid, much like a digital fault recorder. The unique problem is maintaining the DC component, since most common phasor measurement unit systems convert and isolate grid voltage using transformers their DC component is often lost. For this reason I believe isolation amplifiers are ideal, and the 00835 seems to be the most recent version of TI's board which utilizes their isolation amplifier for such a task. The main concern I have is their usage of "external transformers" which may block the DC component anyways. I also have some concern over their dependence on the input signal being 50 or 60Hz in many of their accuracy formula, as ideally off-nominal frequencies should not be attenuated.

Obtaining one of these boards will cost a significant amount of money, and I am not 100% certain if this board is right for me. I would appreciate if anyone could give me some advice on this, or suggest another applicable board. Thank you.