Hi all,
Now we are making a device that have a function of AC lead-off to make sure the pad is contacted well on the head skin.
previous post is below;
(we did not receive the final answer on the previous post yet.)
my partner drew the schematics for us, they use only INxP pins, INxN pins are just connected to the GND.
is it okay to activate AC lead-off function although not using INxN pins?
and also we tested with ADS1299EVM to confirm lead-off function (both DC and AC)
we found that DC lead-off is working well on ADS1299EVM, but did now worked in our PCB on same firmware.
(AC lead off is still on progress in EVM)
anyway we think that the major 2 differences between EVM and our PCB are the using of INxN pins and the amplifier & bandpass filter in first input side.
could review our schematic? unfortunately the schematic is confidential, please let me know your personal email address for sending the schematic.
Best regards,
Chase
