TIC12400-Q1: ±1V ground shift

Daniel Wang (auto)

Part Number: TIC12400-Q1
Other Parts Discussed in Thread: TIC12400,

Tool/software:

Hello team,

Regarding TIC12400, customer is using analog function, in datasheet ± 1V ground offset needs to be considered, what will be the cause of this ground offset? must be considered?

Because for a multi-gear analog switch, considering the ground offset, there would be a gap interval greater than 2V between adjacent gears, but this is difficult to achieve for multi-gear switches.

Thanks!

Regards,

Daniel Wang

10 months ago

0 Amy 10 months ago

TI__Genius 15321 points

Hi Daniel,

Thank you for your question. Can you let me know where in the datasheet you are referring to?

Thank you, Amy

0 Daniel Wang (auto) 10 months ago in reply to Amy

TI__Expert 3540 points

Hello Amy,

Pls check the screenshot:

Regards,

Daniel Wang

0 Amy 10 months ago in reply to Daniel Wang (auto)

TI__Genius 15321 points

Hi Daniel,

Thank you for sharing this. The non -Q1 datasheet doesn't mention it and that is what I was looking at.

The ground shift comes from the switch reference point and the ground reference of the TIC12400-Q1. This is what causes the up +/- 1V ground shift in the system and why there may be up to a +/- 1V of potential difference. As an example, refer to the specifications as outlined in Table 9-4/9-5.

Thanks,

Amy

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TIC12400-Q1: ±1V ground shift