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An Implantable 700μW 64-Channel Neuromodulation IC for Simultaneous Recording and Stimulation with Rapid Artifact Recovery
- Johnson, Benjamin C;
- Gambini, Simone;
- Izyumin, Igor;
- Moin, Ali;
- Zhou, Andy;
- Alexandrov, George;
- Santacruz, Samantha R;
- Rabaey, Jan M;
- Carmena, Jose M;
- Muller, Rikky
Published Web Location
https://doi.org/10.23919/vlsic.2017.8008543Abstract
We present an 180nm HV CMOS IC for concurrent neural stimulation and recording that combines 64 low-noise recording front-ends and 4 independent stimulators multiplexed to any of the 64 channels. The stimulators have 5mA peak current, 12V compliance and dynamic power management to maximize efficiency. Co-design of the stimulation and recording subsystems resulted in 100mV of recording linear range, 70nV/rtHz noise, and a rapid 1ms (single-sample) artifact recovery during stimulation.
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