Abstract
The front-end amplifier forms the critical element for signal detection and pre-processing within neural monitoring systems. It determines not only the fidelity of the biosignal, but also impacts power consumption and detector size. In this paper, a combined feedback loop-controlled approach is proposed to neutralize for the input leakage currents generated by low noise amplifiers when in integrated circuit form, alongside signal leakage into the input bias network. Significantly, this loop topology ensures the front-end amplifier maintains a high input impedance across all manufacturing and operational variations. Furthermore, this feedback loop provides the amplification for the low amplitude neural signals without significant increase in power consumption or input-referred noise.
Original language | English |
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Title of host publication | Proceedings of 2016 IEEE International Conference on Integrated Circuits and Microsystems, ICICM 2016 |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 135-139 |
Number of pages | 5 |
ISBN (Electronic) | 9781509028146 |
ISBN (Print) | 9781509028139 |
DOIs | |
Publication status | Published - 16 Jan 2017 |
Event | 2016 IEEE International Conference on Integrated Circuits and Microsystems, ICICM 2016 - Chengdu, China Duration: 23 Nov 2016 → 25 Nov 2016 |
Conference
Conference | 2016 IEEE International Conference on Integrated Circuits and Microsystems, ICICM 2016 |
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Country/Territory | China |
City | Chengdu |
Period | 23/11/16 → 25/11/16 |
Keywords
- analog integrated circuits
- biomedical signal processing
- CMOS technology
- Low-noise amplifiers
- neural recording