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