Advanced neural prosthetics requires high density neural recording and stimulation electrodes interfacing with the tissue. For an implantable device, area, power consumption, and noise performance are the key design metrics. Due to the low-frequency nature of the recorded signals, chopping technique is inevitable to satisfy the noise requirement while maintaining a small area and low power consumption. However, chopping leads to a significant drop in input impedance, which leads to potential attenuation of neural signals recorded from high impedance miniature electrodes, and an unacceptable large input current drawn from the tissue. This work presents a chopper stabilized, current feedback amplifier (CFA) with input impedance boosted to 3.0 GΩ. The amplifier has an adjustable voltage gain of 40-60 dB, and an adjustable high-pass cut-off frequency of 0.5 - 5 Hz, with a power consumption of 2.6 W and noise efficiency factor (NEF) of 3.2.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970809 | PMC |
| http://dx.doi.org/10.1109/lssc.2019.2916754 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A thermodynamic evaluation of a multi-objective system optimized using integrated Pinch and exergy analysis.
Sci Rep
January 2025
Department of Mechanical Engineering, Kerman Branch, Islamic Azad University, Kerman, Iran.
This article introduces an innovative multipurpose system that integrates a solar power plant with a coastal wind farm to generate refrigeration for refinery processes and industrial air conditioning. The system comprises multiple wind turbines, solar power plants, the Kalina cycle to provide partial energy for the absorption refrigeration cycle used in industrial air conditioning, and a compression refrigeration cycle for propane gas liquefaction. An extensive energy and exergy analysis was conducted on the proposed system, considering various thermodynamic parameters such as the solar power plant's energy output, the absorption chiller's cooling load, the electricity generated by the turbines, the wind turbines' power output, and the energy efficiency and exergy of each cycle within the system.
View Article and Find Full Text PDFDouble layers optimal scheduling of distribution networks and photovoltaic charging and storage station cluster based on leader follower game theory.
Sci Rep
January 2025
Water Conservancy Project & Civil Engineering College, Tibet Agriculture & Animal Husbandry University, Linzhi, 860000, China.
The paper addresses the economic operation optimization problem of photovoltaic charging-swapping-storage integrated stations (PCSSIS) in high-penetration distribution networks. It proposes a dual-layer optimization scheduling model for PCSSIS clusters and distribution network systems. Firstly, a master-slave game model is constructed.
View Article and Find Full Text PDFDigital inclusive finance, rural revitalization and rural consumption.
PLoS One
January 2025
Taiwan Research Institute, Xiamen University, Fujian, China.
With the rapid development of technology and the evolution of the global financial system, digital inclusive finance has become a new way to promote rural revitalization and rural residents' consumption with the power of financial technology. This study explores the relationship between digitally inclusive finance, rural revitalization, and rural residents' consumption. Based on the panel data of 30 provinces and cities in China from 2011 to 2021, this study empirically examines the impact of digitally inclusive finance on rural residents' consumption and the mediating and threshold effects of rural revitalization.
View Article and Find Full Text PDFFinancial Analytics for Laboratory Stewardship: Using Data and Informatics to Increase Financial Returns for Labs and Decrease Financial Harm to Patients.
J Appl Lab Med
January 2025
Department of Laboratories, Seattle Children's Hospital, Seattle, WA, United States.
Background: As clinical laboratories struggle to maintain their financial footing and as patients face mounting out-of-pocket expenses for diagnostic testing, being able to perform financial analysis of laboratory stewardship efforts has become an increasingly important skill.
Content: Understanding the revenue cycle as it relates to diagnostic testing is fundamental to selecting, designing, implementing, and evaluating laboratory stewardship interventions for maximum financial return. Leveraging the data and processes driving the revenue cycle can inform informatics-based interventions (such as clinical decision support) and allow deliberate financial analyses of stewardship-focused projects.
Renewable energy and cryptocurrency: A dual approach to economic viability and environmental sustainability.
Heliyon
November 2024
Department of Energy System Engineering, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, No. 15, Pardis St., Molasadra Ave., Vanak Sq., Tehran, Iran.
One of the foremost challenges facing Bitcoin, as the most valuable cryptocurrency operating on a proof-of-work mechanism, is its substantial energy consumption and environmental impact. With the expansion of the Bitcoin market, mining has surged in popularity, particularly in countries where energy and monetary costs are comparatively low. This study aims to assess the impact of utilizing renewable energy from a photovoltaic system for Bitcoin mining, simulating a solar power plant with a 50.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!