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Frequent questions

  • [FAQ] What is a 2-wire 4-20mA current transmitter?

    Other Parts Discussed in Thread: XTR117 , XTR106 , XTR101 , XTR112 , XTR108 , XTR116 , XTR115 , XTR105 , DAC161P997 , DAC161S997 What is a 2-wire 4-20mA current transmitter? How do I use one?

  • [FAQ] What is a 4-20mA current transmitter?

    What is a 4-20mA current transmitter?

  • [FAQ] Does TI have integrated 4-20mA transmitters for inputs from RTDs?

    Other Parts Discussed in Thread: XTR105 , XTR112 , XTR108 Does TI have integrated 4-20mA transmitters for inputs from RTDs (resistive temperature detectors)?

  • [FAQ] Does TI have integrated 4-20mA transmitters for inputs from bridge sensors?

    Other Parts Discussed in Thread: XTR106 , PGA309 , XTR117 Does TI have integrated 4-20mA transmitters for inputs from bridge sensors?

  • [FAQ] Can I use multiple XTR devices if I have multiple DAC outputs or multiple sensors that share a supply and ground?

    Other Parts Discussed in Thread: ISO7340C , ISO7310C I have multiple sensors going into a DAC with multiple output channels. Can I use multiple XTR devices to transmit the 4-20mA current signals for each sensor?

  • [FAQ] Are there reference designs that can help me build a 4-20mA transmitter?

    Other Parts Discussed in Thread: XTR105 , XTR112 , XTR116 , XTR117 , XTR111 , XTR300 , XTR305 , DAC8771 , DAC8775 , DAC8760 Are there reference designs that can help me build a 4-20mA transmitter? Where can I find them? How do I incorporate IEC protection…

  • [FAQ] The minimum output current of my 2-wire 4-20mA transmitter is greater than 4mA.

    Other Parts Discussed in Thread: XTR116 The minimum output current of my 2-wire 4-20mA transmitter is greater than 4mA. Why is that? How can I lower it?

  • [FAQ] Can I use a 2-wire 4-20mA transmitter with a sensor or microcontroller that uses its own supply?

    Other Parts Discussed in Thread: ISO7340C , ISO7310C 2-wire 4-20mA transmitters are loop powered, and the sensor and its associated circuitry are supplied by the transmitter. Is it possible to use a sensor or microcontroller that uses a separate supply…

  • [FAQ] Why does my 2-wire 4-20mA transmitter output not reach the full 20mA?

    Why does my 2-wire 4-20mA transmitter output not reach the full 20mA? When I change the load resistance or decrease the supply, the output changes. What can I do to fix this?

  • [FAQ] Voltage scaling for almost any application (single ended)

    The technical article “ Three ways to scale an analog input ” only covered options for non-inverting and attenuating voltage scaling. Is there a voltage scaling solution for any single ended input range to a desired output range?

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