This article presents the integration of a 32-channel neuromodulation system on chip (SoC) that is developed for chronic implantation in humans. The application-specific integrated circuit (ASIC) offers low-noise recording, a state-of-the-art (SotA) neurostimulator capable of both current- and voltage-controlled stimulation with high-voltage compliance, on-chip 16-bit data digitization as well as safety features such as electrode impedance estimation and charge balancing. The chip communicates through two distinct SPI interfaces for independent command and data transfer. Thus, the developed system constitutes a fully digital, bidirectional 32-channel interface to the brain.

中文翻译：

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一种高电压顺从性、32 通道数字接口片上神经调节系统

本文介绍了为人类慢性植入而开发的 32 通道片上神经调节系统 (SoC) 的集成。专用集成电路 (ASIC) 提供低噪声记录、最先进的 (SotA) 神经刺激器，能够进行电流和电压控制刺激，具有高电压合规性，片上 16 位数据数字化以及安全功能，例如电极阻抗估计和电荷平衡。该芯片通过两个不同的 SPI 接口进行通信，以实现独立的命令和数据传输。因此，开发的系统构成了一个全数字、双向 32 通道的大脑接口。