This paper describes a low-noise neural recording integrated circuit composed of a lownoise analog front-end (AFE) and a low-power analog-to-digital converter (ADC). The AFE amplifies biopotentials and the ADC converts input signal to digital output. The AFE exhibits 53.4dB of mid-band gain, 38.8Hz-10.6kHz of -3dB bandwidth. Total input referred noise (IRN) of AFE is 10.8μVrms and noise efficiency factor (NEF) is 8.1. The ADC achieves 10bit resolution and operates at 2.5MS/s. The chip is fabricated and successfully tested in a 0.18μm CMOS process.

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