This paper presents a novel frequency-domain multiplexing scheme of liquid-gate GFET sensors for large-scale µECoG recording. The proposed technique allows the hybrid integration of GFET arrays and read-out ICs. In order to avoid artifacts, the proposal does not employ any switch in the GFET array and it is insensitive to the flicker noise of the CMOS frontend. A modular read-out IC architecture targeting the continuous acquisition of up to 1024 µECoG channels is introduced together with a collection of low-power CMOS circuits for the practical implementation of each building block. A test chip of the proposed system is currently being integrated in 0.18-µm 6-metal CMOS technology.
Switch-less frequency-domain multiplexing of GFET sensors and low-power CMOS frontend for 1024-channel µECOG
Dei M.;
2019-01-01
Abstract
This paper presents a novel frequency-domain multiplexing scheme of liquid-gate GFET sensors for large-scale µECoG recording. The proposed technique allows the hybrid integration of GFET arrays and read-out ICs. In order to avoid artifacts, the proposal does not employ any switch in the GFET array and it is insensitive to the flicker noise of the CMOS frontend. A modular read-out IC architecture targeting the continuous acquisition of up to 1024 µECoG channels is introduced together with a collection of low-power CMOS circuits for the practical implementation of each building block. A test chip of the proposed system is currently being integrated in 0.18-µm 6-metal CMOS technology.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
