TMCS1133: Minimum Value of CMTI

Francis Jiang

Part Number: TMCS1133

Tool/software:

Hi Team,

Customer ask whether this device can reach 100kV/us CMTI, which is from their estimated common mode noise and doesn't show in the datasheet(only typical value here). Could you please help check it? Thanks.

BRs,

Francis

6 months ago

0 Joe Vanacore 6 months ago

TI__Genius 17140 points

Hello Francis,

Thank you for your post.

I am acknowledging your post and I will give you an update tomorrow.

Thank you for your patience,

Joe

+1 Joe Vanacore 6 months ago in reply to Joe Vanacore

TI__Genius 17140 points

Hello Francis,

Thank you for your patience.

We tested the device in a more severe condition than 100kV/µs. The change in the output signal from the CMTI should be less than the listed 200mV of output transients as a result of 100kV/µs.

Best Regards,

Joe

0 Francis Jiang 6 months ago in reply to Joe Vanacore

TI__Expert 3210 points

Hi Joe,

So the test condition is > 150kV/us, right? Would like to double check with you.

And would like to ask whether 200mV requirement is from any standard? Thanks in advance.

BRs,

Francis

+1 Joe Vanacore 6 months ago in reply to Francis Jiang

TI__Genius 17140 points

Hello Francis,

Our test condition is 150kV/us and 200mV is a value of output disturbance that we warranty for less than 1us (with some guard band). CMTI originates from a digital standard based on digital output errors or flipped bits. We are not aware of any official standard.

I hope this helps,

Joe