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looking fo a 4-20mA to 0-10V converter

Olivier BERTRAND
Prodigy 220 points
Other Parts Discussed in Thread: RCV420

Hello evb,

First I'm not sure to be in the right section related to the forum.
You have to know I'm not familiar with this kind of application, so please, be indulgent with my knowledges ;)

I'd like to know if there is a component or a kind of transmitter providing output an image of the input current... See attached drawed schematic.
I guess this device is not the speciality of TI...


I know the schematic seems magical :) I'm not attempting to have a simple solution like this...

Doesn't matter if the output is adjustable. I'ts just a feature I'd find usefull.
Also if the datas are provided by I2C, UART, SPI or any other bus, don't hesitate to post me any solutions..
I'm aware of flexible solutions.

Thanks in advance.
Cheers.

  • 0
    TI__Guru**** 156916 points
    Olivier,

    Are you sure you want to convert 4mA-20mA to 0V to 10V in a linear fashion, using an amplifier?
    If the data steam is digital then a digital solution that provides 0V or 10V based of input current being close to 4mA or 20mA would be better.

    Which do you prefer? What is the data rate?
  • 0 in reply to Ron Michallick
    TI__Guru 63205 points

    Hi Olivier,


    Take a look at the RCV420, it's the only integrated solution from TI that converts 4-20mA signals into voltage outputs.

  • 0 in reply to Ron Michallick
    Prodigy 220 points

    Hi Ron,

    Actually I'm at a step on the project where I don't have enough information to reply... :-/
    I just know the 4-20mA will be a set point for a solar application read by a SoC; like a microcontroller.

    The thing interests me is the effective distance with the 4-20mA technology and for sure the project involve big distances.
    Maybe it would be better to read the data in SPI or I2C from the 4-20mA...

    What do you think... ?
    It's probable my mind will change relating to the solution as soon I'll get more details from the bill of spec.

    goodbye

  • 0 in reply to Collin Wells
    Prodigy 220 points
    Hi Collin,

    Thank you for this.. I'll take a look.

    bye.