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Analog Integrated Current Drivers for Bioimpedance Applications: A Review.
Nazanin Neshatvar1, Peter Langlois2, Richard Bayford3
1Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UK. n.neshatvar.12@ucl.ac.uk.
Sensors (Basel, Switzerland)
|February 21, 2019
Summary
This review examines integrated circuit analog current drivers for bioimpedance measurements, highlighting key features like high output impedance and low phase delay for accurate results.
Area of Science:
- Electrical Engineering
- Biomedical Instrumentation
- Analog Integrated Circuits
Background:
- Bioimpedance measurements are crucial for various health monitoring applications.
- Accurate bioimpedance analysis relies heavily on the performance of the current driver.
- Integrated circuit analog current drivers are essential components in modern bioimpedance systems.
Purpose of the Study:
- To review integrated circuit analog current drivers developed over the past decade.
- To identify and analyze critical performance characteristics of current drivers.
- To categorize current driver designs based on their operational topology.
Main Methods:
- Literature review of integrated circuit analog current drivers from the last 10 years.
- Categorization of drivers into open-loop and closed-loop designs.
- Analysis of key performance metrics including output impedance, phase delay, and harmonic distortion.
Main Results:
- Identified high output impedance, low phase delay, and low harmonic distortion as key features.
- Classified reviewed current drivers into distinct open-loop and closed-loop architectures.
- Detailed the specific characteristics and trade-offs associated with each design category.
Conclusions:
- The choice between open-loop and closed-loop designs impacts overall current driver performance.
- Understanding these design characteristics is vital for optimizing bioimpedance measurement systems.
- This review provides a valuable resource for researchers and engineers in bioimpedance instrumentation.
Keywords:
bioimpedance measurementcurrent driverintegrated circuitlinear feedbacknonlinear feedbacktransconductanceMore Related Videos
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