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Original question:

DAC7750: Working of ALARM feature in DAC7750

DAC7750: HART-IN unused

Liu Yang
Expert 5945 points
Part Number: DAC7750

Hi Team, 

For Unused HART-IN pin of DAC7750, how to deal with?

Best Regards,

Tom Liu

  • +1
    TI__Guru* 93465 points

    Tom,

    Generally, we have recommended that the HART-IN be AC coupled to GND. In that case it, you would tie it to GND through a capacitor. Figure 9-3 in the datasheet shows a 22nF capacitor and you can imagine the AC source as 0V. 

    Joseph Wu