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Dear Receiver,
As I know, Smart Sense (Full auto Tune) can solve most of cap sense turning problem.
But I feel a little curious about Smart Sense (Manual Tune) now.
What's kind situation you will select Smart Sense (Manual Tune) ?!
It's hard for me to image SNR < 5, if I select Smart Sense (Full auto Tune) already.
Because I feel Smart Sense (Full auto Tune) will always get SNR > 5. Auto-tune should be smarter than manual tune.
Base on above,,,
Could you please give me some actual examples that SNR can't reach 5 even I select Smart Sense (Full auto Tune) ?!
I would like to learn how do estimate what case I should use Smart Sense (Full auto Tune) and what case maybe I need to use Smart Sense (Manual Tune).
Thank you so much.
Solved! Go to Solution.
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CapSense
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Hi @Tim_Shih,
SmartSense, in most cases, achieves an SNR of greater than or equal to 5:1. When the design does not follow the CapSense design recommendations provided in the CapSense Design Guide, or when ESD strikes occur, presence of metals/solid GND near the sensors which increases their Cp, then SNR of >5:1 cannot be achieved either by SmartSense or manual tuning.
Refer to section 5.1 in the design guide to decide when to choose between SmartSense and Manual Tuning.
Regards,
Nikhil
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Hi @Tim_Shih,
SmartSense, in most cases, achieves an SNR of greater than or equal to 5:1. When the design does not follow the CapSense design recommendations provided in the CapSense Design Guide, or when ESD strikes occur, presence of metals/solid GND near the sensors which increases their Cp, then SNR of >5:1 cannot be achieved either by SmartSense or manual tuning.
Refer to section 5.1 in the design guide to decide when to choose between SmartSense and Manual Tuning.
Regards,
Nikhil