Ultralow-Noise Chopper Amplifier for Seafloor E-Field Measurement [PDF]
SensorsThe seafloor E-field signal is extremely weak and difficult to measured, even with a high signal-to-noise ratio. The preamplifier for electrodes is a key technology for ocean-bottom electromagnetic receivers.
Sixuan Song, Kai Chen
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Novel Tunable Pseudoresistor-Based Chopper-Stabilized Capacitively Coupled Amplifier and Its Machine Learning-Based Application [PDF]
MicromachinesThis work presents a high-common-mode-rejection-ratio (CMRR) and high-gain FinFET-based bio-potential amplifier with a novel CMRR reduction technique. In this paper, a feedback buffer is used alongside a capacitively coupled chopper-stabilized circuit to
Mohammad Aleem Farshori +8 more
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A chopper amplifier with adaptive biasing OTA for biomedical applications, featuring high gain and CMRR. [PDF]
PLoS ONEThis paper presents a design of fully differential chopper amplifier employing the flipped voltage follower (FVF) adaptive biasing technique, focusing on its potential use in biopotential recording applications.
Bhaskara Rao Kasipogula +1 more
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Design of a 0.5 V Chopper-Stabilized Differential Difference Amplifier for Analog Signal Processing Applications [PDF]
Sensors, 2023 This paper presents a low-voltage low-power chopper-stabilized differential difference amplifier (DDA) realized using 40 nm CMOS technology. Operating with a supply voltage of 0.5 V, a three-stage DDA has been employed to achieve an open-loop gain of 89 ...
Xinlan Fan, Feifan Gao, Pak Kwong Chan
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A Compact Low-Power Chopper Low Noise Amplifier for High Density Neural Front-Ends [PDF]
SensorsThis paper presents a low-power and area-efficient chopper-stabilized low noise amplifier (CS-LNA) for in-pixel neural recording systems. The proposed CS-LNA can be used in a multi-channel architecture, in which the chopper mixers of the LNA are ...
Alessandro Fava +3 more
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Chopper-Stabilized Instrumentation Amplifier with Automatic Frequency Tuning Loop [PDF]
Micromachines, 2018 A variable-gain chopper-stabilized instrumentation amplifier (chopper IA), which employs a low pass filter (LPF) to attenuate the up-converted noise at the chopping frequency, is presented. The circuit is designed and fabricated with Taiwan Semiconductor
Chen-Mao Wu +3 more
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A 35 nV/√Hz Analog Front-End Circuit with Adjustable Bandwidth and Gain in UMC 40 nm CMOS for Biopotential Signal Acquisition [PDF]
SensorsThis paper presents a 35 nV/√Hz analog front-end (AFE) circuitdesigned in the UMC 40 nm CMOS technology for the acquisition of biopotential signal. The proposed AFE consists of a capacitive-coupled instrumentation amplifier (CCIA) and a combination of a ...
Lu Liu +5 more
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A Low-Noise Amplifier for Submarine Electric Field Signal Based on Chopping Amplification Technology [PDF]
SensorsIn the exploration of ocean resources, the submarine electric field signal plays a crucial role through marine electromagnetic methods. However, due to the field signal’s low-frequency and weak characteristics, it often encounters interference from the ...
Fenghai Liu +4 more
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A 5.5 μW 42 nV/√Hz Chopper stabilized Amplifier for Biomedical Application with Input Impedance Enhancement [PDF]
International Journal of Electronics and Telecommunications, 2021 The continuous real-time monitoring of diverse physical parameters using biosignals like ECG and EEG requires the biomedical sensors. Such sensor consists of analog frontend unit for which low noise and low power Operational transconductance amplifier ...
Ankit Adesara, Amisha Naik
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Current-Feedback Instrumentation Amplifier Using Dual-Chopper Fill-In Technique
Applied Sciences, 2022 In this study, we describe a dual-chopper glitch-reduction current-feedback instrumentation amplifier (CFIA) with a ripple reduction loop. The amplifier employs the chopping technique to reduce low-frequency noise, such as 1/f noise.
Gyuri Choi +7 more
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