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An implantable EEG recording IC including 32 analog low noise amplifiers, band-pass filters, adjustable gain stages, and a 10 b SAR ADC is presented. The chip, implemented in 0.35 μm CMOS process, achieves 1.15 μVrms total noise in a 0.5-to-150 Hz band and consumes 22 μW from a 1 V supply, attaining a noise efficiency factor of 2.24.
This paper presents a low-voltage low-power 16-channel interface chip dedicated for implantable neural signal recording. It consists of 16 front-end channels with tunable band-pass filtering and gain settings, multiplexed to a 10-bit SAR ADC for simultaneous recording. To comply with the implantation safety issue while maintaining comparable performance, the overall system is optimized to achieve...
An ultra-low-power, low-noise sensor interface IC dedicated for bio-signal acquisition is presented in this paper. The proposed system architecture is optimized to achieve a better trade-off between power consumption and noise figure. A 0.05 ~ 200 Hz bandpass function is embedded within the front-end amplifier, and a wide bandwidth buffer is inserted between the front-end amplifier and ADC to facilitate...
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