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A CMOS Dual-Mode BrainComputer Interface Chipset With 2-mV Precision Time-Based
一款用于双向脑机接口的CMOS双模芯片组，具有2mV精度时间电荷平衡技术。
40V兼容电流刺激器，12.75mA最大电流，180nm CMOS工艺
脑机接口神经刺激数据采集电荷平衡CMOS
▸时间电荷平衡技术（TBCB）实现2mV精度
▸双模数据采集架构支持全带和基带操作
▸刺激侧轮廓整形（SSCS）技术抑制45dB伪影
Abstract
This article presents a multipolar neural stimula-
tion and mixed-signal neural data acquisition (DAQ) chipset
for fully implantable bi-directional brain–computer interfaces
(BD-BCIs). The stimulation system employs four 40 V compliant
current-stimulators, each capable of sourcing/sinking a maximum
12.75 mA stimulation current, connected to 16 output channels
through a high-voltage (HV) swit ch fabric. A novel time-based
charge balancing (TBCB) technique is introduced to reduce
the residual volt