A 1.2-µW 41-dB Ripple Attenuation Chopper Amplifier Using Auto-Zero Offset Cancelation Loop for Area-Efficient Biopotential Sensing

XT Pham, TK Vu, TD Nguyen, L Pham-Nguyen - Electronics, 2022 - mdpi.com
In this paper, a low-power and low-noise capacitive-coupled chopper instrumentation
amplifier (CCIA) is proposed for biopotential sensing applications. A chopping technique is …

Noise Analysis and Design Methodology of Chopper Amplifiers With Analog DC-Servo Loop for Biopotential Acquisition Applications

YK Huang, S Rodriguez - … on Very Large Scale Integration (VLSI …, 2023 - ieeexplore.ieee.org
Biopotential acquisition chopper instrumentation amplifiers require a dc-servo loop (DSL) in
order to filter electrode dc offsets. However, the noise performance degradation due to the …

A capacitively-coupled chopper instrumentation amplifier with compensated auto-zeroed DC servo-loop for neural signal recording

Z Zhou, L Zhu, W Wang, J Li, Q Meng… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This brief presents a capacitively-coupled chopper instrumentation amplifier (CCIA) with a
compensated auto-zeroed (CAZ) dc servo-loop (DSL) for neural signal recording. The …

Design and Implementation of a Low-Power Low-Noise Biopotential Amplifier in 28 nm CMOS Technology with a Compact Die-Area of 2500 m

ER Koleibi, K Koua, W Lemaire, M Benhouria… - arXiv preprint arXiv …, 2024 - arxiv.org
This paper presents a compact low-power, low-noise bioamplifier for multi-channel
electrode arrays, aimed at recording action potentials. The design we put forth attains a …

A 64.3 dB THD, 26 nV/Hz Bio-Potential Readout Analog-Front-End Amplifier With a Gm-C Integrator-Implanted DC Servo Loop, and a Bulk-Driven Ripple …

K Wen, S Liu, L Zhong, Y Shen… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This paper presents aC integrator-implanted DC servo loop (GMCI2-DSL) and a bulk-driven
ripple reduction loop (BD-RRL) for bio-potential readout analog-front-end (AFE) amplifier …

A 1.9 µW 127 n V/√ Hz Bio Chopper Amplifier Using a Noise-Efficient Common Mode Cancelation Loop

XT Pham, XP Tran, KV Nguyen… - 2022 International …, 2022 - ieeexplore.ieee.org
Electrical neural stimulation (ENS) is widely used for implantable applications to convey
information to nervous tissue. However, ENS will generate large common (CM) artifacts at …

Ultra-Low Power Programmable Bandwidth Capacitively-Coupled Chopper Instrumentation Amplifier Using 0.2 V Supply for Biomedical Applications

XT Pham, XT Kieu, MK Hoang - Journal of Low Power Electronics and …, 2023 - mdpi.com
This paper presents a capacitively coupled chopper instrumentation amplifier (CCIA) with
ultra-low power consumption and programmable bandwidth for biomedical applications. To …

Chopping for over 50 MHz gain‐bandwidth product current sense amplifiers achieving input noise level of 8.5 nV/√ Hz

CD Matthus, F Ellinger - International Journal of Circuit Theory …, 2022 - Wiley Online Library
An accurate, high‐speed, fully differential difference amplifier for current sensing utilizing the
chopper approach was implemented in a 0.18 μm complementary metal‐oxide …

A low noise CLASS AB operational amplifier with high voltage output capability by 180 nm BCD process

P Li, L Luo, Q Wei - Journal of Physics: Conference Series, 2024 - iopscience.iop.org
In this work, a low noise CLASS AB operational amplifier, which can output high voltage, has
been fabricated by a 180 nm BCD process. For the objective of achieving low noise, the …

A Low Noise 10-Bit 59.41 dB SNR SAR ADC Using Chopper Comparator for Biomedical Applications

XT Pham, TVH Nguyen, VT Le, TTH Tran… - … on Advances in …, 2023 - Springer
This paper presents a low noise 10-bit 59.51 dB SNR successive-approximation-register
(SAR) analog-digital-inverter (ADC) using the chopper comparator for biomedical …