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Titolo: Compact, multi-channel, electronic interface for PNS recording and stimulation
Data di pubblicazione: 2014
Abstract: A multi-channel system for neural signal recording/stimulation is presented. The system is split on two devices: an implantable High Voltage (HV) CMOS integrated circuit (IC) hosting a sigma delta modulator, together with a low noise preamplifier/prefilter and a digital platform for sigma delta decimation/control implemented on a FPGA. This innovative approach guarantees a robust communication link while minimizing the blocks to be implanted, saving power and area. The recording unit exhibits an IRN = 2.12uVrms in 800Hz-8kHz bandwidth, a programmable gain in the range 45.4dB-58dB and a 14-bit A/D conversion. The IC hosts also a current-mode stimulator able to deliver currents in the range of hundreds of microampere to electrodes with impedances up to 100kΩ.
ISBN: 978-0-88986-968-4
Tipologia:4.1 Contributo in Atti di convegno

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