Table 1.

Recent works on full chip neural amplifier systems for CNS recording applications

References	[54]	[16]	[6]	[141]	[49]	[156]	[77]
Year	2007	2009	2009	2011	2013	2013	2014
CMOS process	0.5 µm	0.35 µm	0.35 µm	0.18 µm	0.18 µm	0.18 µm	0.18 µm
Chip size(mm2)	27.73	63.3	15.75	9.9	25	28.2	9.6
No. of channels	100	128	256	32	100	100	455(52)
Power (mW)	13.5	6	5.04	0.325	0.094	1.16	1.45
Supply voltage (V)	3.6	3.0	3.0	1.8	0.45	1.8	1.8
Signal bandwidth (Hz)	30–35 k	0.1–20 k	0.01–5 k	0.13–11.7 k	1–10 k	0.38–5.1 k	0.5–6 k
Input-referred noise (µVrms)	5.1	4.9	7.0	5.4–11.2	3.2	4.0	3.2
ADC resolution (bits)	10	6–9	None	8	9	9.5	10
Read-out	ASK + FSK telemetry	UWB	Analog	Digital	Digital	Digital	Digital