We present the first bi-directional neural interface chip that employs a stimulation artifact cancellation circuit to allow concurrent recording and stimulation. In order to further suppress cross-channel common-mode noise, we incorporated a novel common average referencing (CAR) circuit in conjunction with range-adapting (RA) SAR ADC for low-power implementation. The fabricated prototype attenuates stimulation artifacts by up to 42 dB and suppresses common noise among channels by up to 39.8 dB at 330 nW and in an area of 0.17 mm2 per channel.
|Title of host publication||2015 Symposium on VLSI Circuits, VLSI Circuits 2015|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2015 Aug 31|
|Event||29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015 - Kyoto, Japan|
Duration: 2015 Jun 17 → 2015 Jun 19
|Name||IEEE Symposium on VLSI Circuits, Digest of Technical Papers|
|Conference||29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015|
|Period||15/6/17 → 15/6/19|
Bibliographical notePublisher Copyright:
© 2015 JSAP.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering