An Implantable CMOS Amplifier for Nerve Signals
نویسندگان
چکیده
In this paper, a low noise high gain CMOS amplifier for minute nerve signals is presented. By using a mixture of weakand strong inversion transistors, optimal noise suppression in the amplifier is achieved. A continuous-time offsetcompensation technique is utilized in order to minimize impact on the amplifier input nodes. The method for signal recovery from noisy nerve signals is presented. A prototype amplifier is realized in a standard digital 0.5 pm CMOS single poly, n-well process. The prototype amplifier features a gain of 80 dB over a 3.6 kHz bandwidth, a CMRR of more than 87dB and a PSRR greater than 84dB. The equivalent input referred noise in the bandwidth of interest is 5nV/&. The amplifier power consumption is 275 pW.
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تاریخ انتشار 2017