Research Article
A Neural Recording and Stimulation Chip with Artifact Suppression for Biomedical Devices
Table 1
Comparison of stimulators for stimulation and recording.
| | Reference [49] (REC and STIM) | Reference [50] (REC and STIM) | Reference [37] (REC and STIM) | Reference [40] (REC and STIM) | Reference [24] (REC and STIM) | This work (REC and STIM) | Process | 0.13 µm | 65 nm | 40/0.18 µm HV | 0.13 µm | 0.18 µm HV | 0.18 µm HV | Artifact suppression | Differential acquisition | Digital adaptive filter | ASAR | Track-and-zoom | Resetting RFE | RTPPS |
| REC | Supply voltage (V) | 1.2 | 1.2/2.5 | 0.6/1.8/1.2/±5 | 0.6/1.2/3.3 | 1 | 1 | Gain (dB) | — | 20 | — | 92 | 90 | 54/60 | Input noise (µVrms) | 2.6 | 2.9 | 2.2 | 1.6 | 71 nV/rtHz | 4.9 | NEF | 3.56 | — | — | 2.86 | 7.8 | 2.2 | Power per channel (µW) | 0.73 | 3.21 | 8.2 | 1.7 | 8 | 4.54 |
| STIM | Compliance voltage (V) | 3.3 | ±11 | ±8.5 | 3.3 | 3/6/9/12 | 24 | Pulse amplitude (A) | — | 2 m | 20 µ–5.1 m | 3 m | 5.04 m | 1.2 µ–1.4 m | Pulse duration (s) | — | 10 µ–2 m | 10 µ–1.28 m | — | 15–500 µ | 16 µ–4 m | Pulse waveform | 8 bits, arbitrary | 8 bits, arbitrary | 8 bits, arbitrary | 8 bits, arbitrary | 6 bits, arbitrary | 5 bits, arbitrary |
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