SLYT847 May   2024 DAC161S997 , DAC8551 , TVS3301

 

  1.   1
  2. 1 Introduction
  3. 2 4mA to 20mA transmitter basics
  4. 3 4mA to 20mA transmitter design aspects
  5. 4 Design performance metrics
  6. 5 Transmitter circuit implementations
  7. 6 Dedicated loop converter
  8. 7 Loop transmitter device
  9. 8 MCU integrated DAC
  10. 9 PWM-based DAC
  11. 10Stand-alone low power DAC
  12. 11Implementations Comparison
  13. 12Conclusion
  14. 13Related websites

12 Conclusion

This selection process can help you decide the correct implementation when designing a 4mA to 20mA transmitter:

  • If you are building a safety system, and need the highest accuracy and lowest noise performance, or looking for a HART-enabled transmitter with power below 200µA, the AFE88101 and AFE881H1 should be your first choices.
  • The DAC161S997 implementation offers the lowest possible power and footprint, followed by the DAC8311 implementation, followed by the XTR117 implementation if prioritizing performance over power consumption.
  • For the lowest cost, choose the MSPM0G implementation. If its performance is not satisfactory, the next cost-optimized solution would be the PWM solution.