Amplitude modulation based readout for very dense active microelectrode arrays

IEICE Electronics Express

Yusuf Leblebici¹  Neil Joye¹  Alexandre Schmid¹ 

[1] Microelectronic Systems Laboratory (LSM), École Polytechnique Fédérale de Lausanne (EPFL)

关键词: high-density active microelectrode array (MEA);    AM modulation-based readout architecture;    extracellular recording;   

DOI  :  10.1587/elex.8.38

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)A readout method which is suitable for high-density active microelectrode arrays used in electrophysiology experiments is presented. Amplitude modulation of consecutive channels enables simultaneous recording and transmission of the signals recorded on multiple electrodes, using a single amplifier. The physical limitation of the readout method is demonstrated to relate to the summation of the thermal noise of each recorded signal at the input of the amplification stage. Post-layout simulations of a possible circuit implementation in a 0.18µm CMOS technology show that five pixels connected to a single amplifier are feasible with a pitch dimension of 17µm, and an SNR value of 15dB.

【 授权许可】

Unknown