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Associate II
November 11, 2025
Solved

ST1VAFE3BX 50/60Hz notch filter?

  • November 11, 2025
  • 1 reply
  • 159 views

In application note TN1571 "Reference design based on the ST1VAFE6AX and ST1VAFE3BX biosensors..." Table 2 mentions that ST1VAFE3BX has a selectable 50/60Hz notch filter. However, there's no further reference to this filter or how to enable it in the datasheet.

Is this an error in TN1571, or something I'm missing.

Thank you.

 

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Best answer by Federica Bossi

Hi @bwilkins ,

Yes, there is a typo. The embedded notch filter is available only in ST1VAFE6AX. For ST1VAFE3BX, if you need it, you can implement digital filtering in post process.

1 reply

Federica Bossi
Federica BossiBest answer
Technical Moderator
November 12, 2025

Hi @bwilkins ,

Yes, there is a typo. The embedded notch filter is available only in ST1VAFE6AX. For ST1VAFE3BX, if you need it, you can implement digital filtering in post process.

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bwilkinsAuthor
Associate II
November 12, 2025

Thank you for confirming.