LMT01 EMI Suppression

Richard Elmquist

Other Parts Discussed in Thread: LMT01

I have a customer asking the following questions regarding the LMT01:

How well does the LMT01 work in the presence of EMI?

The data sheet mentions "integrated EMI suppression". Can you say more about this? I noticed the input resistance at the Receiver is 10K ohms and the logic low current is 34ua, logic high current 135uA. These are not very high values. I am concerned that any EMI that gets through the cable shield will appear across the 10K resistor at the input of the digital receiver. This may not be that robust in a high EMI environment.

Can you comment on this? Thanks for your help with this!

Richard Elmquist

over 7 years ago

0 Aaron Heng over 7 years ago

TI__Mastermind 31600 points

Hi Richard,

Thank you for reaching out to us! Someone will get back to you shortly.

Aaron

0 Richard Elmquist over 7 years ago in reply to Aaron Heng

TI__Mastermind 45250 points

Has anyone had a chance to look at the request above?

Can you give a time frame as to when you might be able to provide the information?

Thanks for your help with this!

Richard Elmquist

0 Emmy Denton over 7 years ago in reply to Richard Elmquist

TI__Expert 4905 points

The EMI rejection is internal to the part between VP and VN. RFI injection such as from a cell phone would not effect the device output. It's not rejection of the trace connecting the part to the MCU.

Take care,

0 Richard Elmquist over 7 years ago in reply to Emmy Denton

TI__Mastermind 45250 points

Emmy,

Thanks so much for your response!

I will let you know if the customer has any further questions.

Thanks again.

Richard Elmquist

Sensors

Sensors forum

LMT01 EMI Suppression