Title :
Low voltage digitally programmable gain and bandwidth fully differential CMOS neural amplifier
Author :
ElGuindy, Mona ; Madian, Ahmed H.
Author_Institution :
Electr. & Electron. Eng. Dept., German Univ. in Cairo, Cairo, Egypt
Abstract :
In this paper, a low voltage fully differential digitally programmable gain and bandwidth CMOS neural amplifier has been presented. The design is suitable for LFP and spikes signals. The neural amplifier has been simulated using LTspice with a CMOS technology of 90nm provided from MOSIS and power supply of 1.2V. The amplifier gain could be programmed from 30 dB to 70 dB, with a total power consumption of 12.48 μW, and an input referred noise of 6μV/Hz1/2 over LFP signal range and 154 nV/Hz1/2 for spikes signals. Moreover, the lower cutoff frequency of the amplifier can be digitally programmed using a new pseudo-resistor structure.
Keywords :
CMOS digital integrated circuits; bioelectric potentials; biomedical electronics; differential amplifiers; electronic engineering computing; integrated circuit design; medical computing; neural nets; programmable circuits; 90nm CMOS technology; LFP signals; LTspice; MOSIS; amplifier gain; bandwidth fully differential CMOS neural amplifier; cutoff frequency; gain 30 dB to 70 dB; low voltage digitally programmable gain; power 12.48 muW; pseudo-resistor structure; spikes signals; voltage 1.2 V; Bandwidth; CMOS integrated circuits; Cutoff frequency; Electrodes; Gain; Noise; Transistors;
Conference_Titel :
Biomedical Robotics and Biomechatronics (BioRob), 2012 4th IEEE RAS & EMBS International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4577-1199-2
DOI :
10.1109/BioRob.2012.6290828
