A compact area/power efficient electrode-matched neural-spike detector (NSD) is proposed to provide an implantable multi-electrode array (MEA). A correlation scheme with only the input sampling capacitors makes an area reduction, and the recording of neural-spike events enables a power reduction, showing 0.0044 mm2 and 0.55 μW. Together with proposed NSD, an implantable 256-channel MEA is fabricated. The electrical measurement results show that the NSD achieves an input-referred noise of 10.1 μVrms with 1 kHz to 10 kHz bandwidth, providing NEF/PEF/AEF of 1.71/5.28/0.0044, respectively, and CMRR of 67.5 dB. It shows ×7.5/×1.6 area/power improvements, compared to previous state-of-the-art NSDs. The fabricated implantable MEA is demonstrated by cell-cultured and brain-sliced experiments.
|Title of host publication||2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||4|
|Publication status||Published - 2018 Mar 23|
|Event||2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 - Torino, Italy|
Duration: 2017 Oct 19 → 2017 Oct 21
|Name||2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 - Proceedings|
|Other||2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017|
|Period||17/10/19 → 17/10/21|
Bibliographical notePublisher Copyright:
© 2017 IEEE.
All Science Journal Classification (ASJC) codes
- Biomedical Engineering
- Electrical and Electronic Engineering