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XTR111: Voltage Output Information

Joe Ringrose
Prodigy 20 points
Part Number: XTR111
Other Parts Discussed in Thread: XTR300, XTR305

Hi, 

I'm looking for some information on the XTR111. In the datasheet it shows if you have a connection between the Set pin and Rload then you can generate a 0-10v Output.

I was wondering how I set the gain for the voltage output as the only calculation is for a current output.

Also, if anyone has any application notes on using the part with a voltage output I would be grateful.

Kind regards,

Joe

  • 0
    TI__Guru 52446 points

    HI Joe,

    The XTR111 is primarily used as a current output driver.  As you have mentioned, the XTR111 datasheet Figure 48 shows it may be possible to configure as a voltage output device, but the gain will be limited to gain of 1, as it produces the same voltage available on the VSET pin.  

    If you are interested in a voltage output and current output transmitter, please consider the XTR300 and XTR305.  The XTR300 and XTR305 are user-selectable current or voltage output drivers.  The XTR300 and XTR305 can support VOUT: ±10 V (up to ±17.5 V at ±20-V supply) and IOUT: ±20 mA (Linear up to ±24 mA).  The XTR300/5 devices work with a bipolar supply, and don't require an external transistor.

    Thank you and Regards,

    Luis 

  • 0
    Guru 140200 points

    Hi Joe,

    another often used way to generate a 0...10V output signal is to mount a 500R shunt at the output Relaxed

    Kai

  • 0 in reply to kai klaas69
    TI__Guru 52446 points

    HI Joe,

    Below are a few XTR300 and XTR305 reference designs that could be of interest.

    Thank you and Regards,

    Luis