HART Communication IC Chip Choice

Semiconductor Integrated Circuits (ICs)
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1

Hi everyone,
I am doing my School Project on HART-Enabled IC chips. I am new to this and will need some clarification on whether I am approaching this correctly.

Project Concept:

  1. Data Source (Computer Acting as a Sensor):
    My computer will generate process variables (e.g., temperature, flow, pressure) as either analog or digital signals. It will also transmit HART-compatible digital data such as calibration data, sensor tags, or whatever diagnostics I want to sent over.

  2. HART-Enabled IC:
    The IC will act as the translator for the Analog and Digital signals, converting handling HART modulation/demodulation so that the computer will be able to display the variables sent out by the data source

  3. Receiving System (either Same or Another Computer):
    The IC should provide the translated data in a format that can be read by the computer

  4. Hardware Setup:
    I am planning to connect the components (computer, IC) using a breadboard.

Question:

  1. I would like to know what HART-enabled IC chip would be the most suitable for my project so that I can purchase it. I am looking at DEMO-AD5700D2Z by Analog Devices, is there a better/cheaper alternative?

  2. Is there any component (Software/Hardware/Adapters) I will have to purchase other than the IC chip? (I have access to my school’s lab so I will have the basic electronic components)

  3. Did I miss out or omit any crucial steps/information?

Really appreciate the help as I am really lost here.

2

Hello bryank00h, and welcome to the forum!

One of the engineers on here might have more detailed input, but what I’d recommend first is reading over the information posted by Analog Devices here: CN0267 Circuit Note | Analog Devices

That article shows an example circuit using the board you’re looking at, and has some more detailed information on the use and capabilities of the DEMO-AD5700D2Z.

As for your other questions, I did see some cheaper options but I’m not sure they’re suited to the application you’ve described, again I’m thinking one of our engineers will hop on who will have more detailed follow up questions than I can come up with. Best of luck!

3

Thanks Chris! The link you sent was very helpful. After reading the article, the Demo board is what I’m looking for.

But I am wondering if any engineers here know if the Analog Devices allow the pre-programmed firmware to be read or modified?

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The Application Note Chris linked to above: CN0267 Circuit Note | Analog Devices Indicates: