A Sub-μW Reconfigurable Front-End for Invasive Neural Recording

被引：0
|
作者：
Luis Valtierra, Jose [1 ]
Fiorelli, Rafaella
Delgado-Restituto, Manuel
Rodriguez-Vazquez, Angel
机构：
[1] Inst Microelect Seville, Avda Americo Vespucio S-N, Seville 41092, Spain
来源：
2019 IEEE 10TH LATIN AMERICAN SYMPOSIUM ON CIRCUITS & SYSTEMS (LASCAS) | 2019年
关键词：
neural front-end; neural recording; ultra-low power; reconfigurable; DESIGN;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a sub-mu W ac-coupled reconfigurable front-end for the purpose of neural recording. The proposed topology embeds in it filtering capabilities allowing it to select among different frequency bands inside the neural signal spectrum. Power consumption is optimized by designing for bandwidth-specific noise targets that take into account the spectral characteristics of the input signal as well as the noise bandwidths of the noise generators in the circuit itself. An experimentally verified prototype designed in a 180 nm CMOS process draws a maximum of 815 nW from a 1 V source. The measured input-referred spot-noise at 500 Hz is 75 nV/root Hz while the integrated noise in the 200 Hz- 5 kHz band is 4.1 mu Vrms.
引用
收藏
页码：85 / 88
页数：4
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