A 43.3-μW Biopotential Amplifier With Tolerance to Common-Mode Interference of 18 V<sub>pp</sub> and T-CMRR of 105 dB in 180-nm CMOS

Koo, Nahmil; Kim, Hyojun; Cho, Seonghwan

doi:10.1109/jssc.2022.3185988

Cited by 9 publications

(2 citation statements)

References 20 publications

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“…Previous research by J.C. Chou et al, [11], [12] developed a V-T measurement system that utilizes an instrumentation amplifier for back-end readout. However, this approach suffered from interference caused by 60 Hz noise and limitations imposed by bulky measurement equipment [13], [14].…”

Section: Introductionmentioning

confidence: 99%

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Development of a Flexible Printed Circuit Board-Based Potentiometric Urea Biosensor Combined With Power Management Circuit Chip

Kuo,

Wang,

Hsu

et al. 2023

IEEE Access

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This study proposes a power management circuit integrated with a readout circuit for measuring urea biosensors. The proposed power management circuit replaces the bulky power supply traditionally used in measurement systems. It operates with only a single 3V button cell for voltage reduction and stabilization. We have designed and manufactured a printed circuit board (PCB) that integrates passive components and power management readout circuit chip for measuring a urea biosensor. A RuO2 thin film was prepared on a flexible printed circuit board (FPCB) through radio frequency (RF) sputtering. To fabricate the urea sensor, we used 3-Aminopropyltriethoxysilane (γ-APTES), glutaraldehyde, and urease. The average sensitivity of the urea sensor was evaluated to be 3.121 (mV/(mg/dL)), with a linearity of 0.994 and a reproducibility of 2.59 %. These results confirm the stability and reliability of the sensor architecture.INDEX TERMS Urea biosensor, power management, flexible printed circuit board (FPCB), full CMOS voltage reference.

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Section: Introductionmentioning

confidence: 99%

“…The traditional use of power supplies in readout circuits for urea biosensors has posed challenges in terms of noise interference and restricted portability [13], [14]. To address these issues, the integration of power management circuits with urea biosensors has emerged as a promising approach [15], [16].…”

Section: Introductionmentioning

confidence: 99%

Development of a Flexible Printed Circuit Board-Based Potentiometric Urea Biosensor Combined With Power Management Circuit Chip

Kuo,

Wang,

Hsu

et al. 2023

IEEE Access

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An auto-zeroing chopper-stabilized capacitively coupled instrumentation amplifier with 25-Vpp common-mode interference tolerance

Liu,

Shen,

Liu

et al. 2024

Microelectronics Journal

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Advancing Electrical Impedance Spectroscopy (EIS): Low-power, High-accuracy, Wide-dynamic-range, and High-throughput Impedance Measurement Circuits and Architectures

Choi,

Cheon,

Kang

et al. 2024

Low-Cost Diagnostics

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This chapter offers an extensive introduction to readout circuit architectures designed to measure impedances across a frequency range in electrical impedance spectroscopy (EIS). The impedance readout circuit, an essential component of on-chip EIS systems, significantly affects key system performances, including precision and speed of measurements, noise, and power consumption. With an increasing demand for implantable, wearable, and portable EIS systems, researchers have been focusing on achieving higher energy efficiency while maintaining high precision and speed in measurements. Additionally, to improve the compactness and ease of use of EIS systems, various systems use two-electrode and dry-electrode setups rather than the conventional four- and wet-electrode configurations. Numerous innovative methods have been developed to provide reliable measurements using two- and dry-electrode interfaces. This chapter discusses advances in impedance-readout architectures and their pros and cons. These approaches are designed to achieve low power consumption, broad frequency and input ranges, high accuracy with low noise, rapid measurement times, and/or high input impedance. The in-depth analyses of each of these improvements for EIS systems will provide insights into the future progress of small-form-factor EIS systems for biomedical and Internet of Things (IoT) applications.

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A 43.3-μW Biopotential Amplifier With Tolerance to Common-Mode Interference of 18 V_pp and T-CMRR of 105 dB in 180-nm CMOS

Cited by 9 publications

References 20 publications

Development of a Flexible Printed Circuit Board-Based Potentiometric Urea Biosensor Combined With Power Management Circuit Chip

Development of a Flexible Printed Circuit Board-Based Potentiometric Urea Biosensor Combined With Power Management Circuit Chip

An auto-zeroing chopper-stabilized capacitively coupled instrumentation amplifier with 25-Vpp common-mode interference tolerance

Advancing Electrical Impedance Spectroscopy (EIS): Low-power, High-accuracy, Wide-dynamic-range, and High-throughput Impedance Measurement Circuits and Architectures

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A 43.3-μW Biopotential Amplifier With Tolerance to Common-Mode Interference of 18 Vpp and T-CMRR of 105 dB in 180-nm CMOS

Cited by 9 publications

References 20 publications

Development of a Flexible Printed Circuit Board-Based Potentiometric Urea Biosensor Combined With Power Management Circuit Chip

Development of a Flexible Printed Circuit Board-Based Potentiometric Urea Biosensor Combined With Power Management Circuit Chip

An auto-zeroing chopper-stabilized capacitively coupled instrumentation amplifier with 25-Vpp common-mode interference tolerance

Advancing Electrical Impedance Spectroscopy (EIS): Low-power, High-accuracy, Wide-dynamic-range, and High-throughput Impedance Measurement Circuits and Architectures

Contact Info

Product

Resources

About

A 43.3-μW Biopotential Amplifier With Tolerance to Common-Mode Interference of 18 V_pp and T-CMRR of 105 dB in 180-nm CMOS