A Neural Recording and Stimulation Chip with Artifact Suppression for Biomedical Devices

Figure 8

(a) Arbitrary stimulation waveforms from two HVAS channels. (b) Test-bench measurement results on one channel: output waveforms of recording circuit, APD, and the HVAS stimulator. (c) In vitro test setup and (d, e) Measurement results with and without RTPPS: the top and middle traces show recording outputs from REF channels 1 and 2, respectively. The bottom two traces are the measured voltages on two working stimulation electrodes.

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