• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 384 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AMC1302: Input Noise

Martin Wassermann
Prodigy 50 points
Part Number: AMC1302


Tool/software:

If I use the 10 Ohm input resistors I have a lot of noise at the output.
Without the 10 Ohm resistors I have much better performance.
Can you give me an explanation for this? Since the circuit was suggested in the data sheet, I would like to know if I can leave it out without any disadvantages.


Regards Martin

  • 0
    TI__Guru 56212 points

    Hi Martin,

    These resistors make up the anti-aliasing filter, meant to filter out high-frequency signals that may alias into the sampling band. 

    It's difficult to read your schematic, but I think there is a CM-choke on the inputs that may be affecting the performance of the RC filter.