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Title: | Low power low noise bio-amplifier with adjustable gain for digital bio-signals acquisition systems |
Authors: | Gupta, Anu |
Keywords: | EEE Bio-Amplifier Low Noise Electroencephalogram , Switched Capacitor |
Issue Date: | 2013 |
Publisher: | IEEE |
Abstract: | This work describes a symmetrical power supplied (±1.8 V) 0.5 μm CMOS implementation of a bio-amplifier designed for use in digital acquisition systems. The whole acquisition system under fabrication will still contain a 3 rd order switched capacitor anti-alias eliptic filter, a sample and hold, an ADC and a SPI interface. In this paper though the focus is over the analog circuitry responsable of amplifing the bio-signals. The achievable gains are controlled through a switched capacitor technique and can achieve over 70 dB with 2.5 μV RMS of input referred noise within 1.5 kHz bandwith. The circuit dissipates 33.2 μW in 0.192 mm 2 |
URI: | https://ieeexplore.ieee.org/abstract/document/6518985 http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/9163 |
Appears in Collections: | Department of Electrical and Electronics Engineering |
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