Title :
256-Channel Neural Recording Microsystem with On-Chip 3D Electrodes
Author :
Aziz, Joseph ; Genov, Roman ; Derchansky, Miron ; Bardakjian, Berj ; Carlen, Peter
Author_Institution :
Toronto Univ., Ont.
Abstract :
A 16times16-channel 3.5times4.5mm2 neural recording interface is fabricated in 0.35mum CMOS and is integrated with on-chip 3D Au and Pt microelectrodes. Each channel dissipates 15muW with an input-referred noise of 7muV over 5kHz bandwidth. A switched-capacitor delta read-out data-compression circuit trades recording accuracy for the output data rate. In-vitro experimental results validate the circuit design and the on-chip 3D electrode bonding technology
Keywords :
CMOS integrated circuits; data recording; medical signal processing; microelectrodes; readout electronics; switched capacitor networks; 0.35 micron; 15 muW; 3D electrode bonding; 5 kHz; Au; CMOS; Pt; microelectrodes; neural recording interface; neural recording microsystem; on chip 3D electrodes; switched-capacitor delta read-out data-compression circuit; Bonding; Capacitors; Circuits; Electrodes; Mice; Optical amplifiers; Optical recording; Sampling methods; Transconductance; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373637
