A low-power and low-noise neural amplifier for all-diamond neural probes

A low-power, low-noise, front-end neural signal amplifier is designed for all-diamond neural recording probes. The neural amplifier provides a gain of 39.6dB with a high cutoff frequency of 9.8kHz. It effectively removes DC, with a real-time tunable low cutoff frequency between 10Hz and 100Hz. The consumed power is 51µW with an input referred noise of 7.78µVrms between 10Hz and 10kHz. The amplifier is designed in austriamicrosystems 0.35µm double-poly, 4-metal, n-well CMOS process and consumes an area of 0.012mm² using 3.3V power supplies.