Results 21 to 30 of about 16,903 (301)
A Micropower Chopper—CDS Operational Amplifier [PDF]
IEEE Journal of Solid-State Circuits, 2010 A low-power spur-free precision amplifier, which uses input chopping and correlated double sampling for demodulation, is presented. This circuit employs an AC coupling between the first and the second stage that removes the first stage offset without causing ripple.
BELLONI, MASSIMILIANO +3 more
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Ripple Suppression in Capacitive-Gain Chopper Instrumentation Amplifier Using Amplifier Slicing [PDF]
IEEE Transactions on Circuits and Systems I: Regular Papers, 2021 This paper proposes a power-up calibration scheme to mitigate the offset of a capacitive-gain chopper instrumentation amplifier (CCIA), thus suppressing the offset-induced output ripple. In this design, the first stage of the error amplifier is formed by multiple identical slices. Before normal operation, the offset polarity of each slice is determined
Tsz Ngai Lin, Bo Wang, Amine Bermak
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Journal of Low Power Electronics and Applications, 2017 In this paper, parameters related to the sensitivity of the interface circuits for capacitive sensors are determined. Both the input referred noise and capacitance of the input transistors are important for capacitive sensitivity.
Parisa Vejdani +2 more
doaj +1 more source
Applied Sciences, 2020 This paper presents a low-noise chopper operational amplifier using a lateral PNP input stage with bipolar junction transistor (BJT) current mirror base current cancellation.
Hyungseup Kim +8 more
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Applied Sciences, 2022 This paper presents a low-noise potentiostat readout circuit with a chopper fully differential difference amplifier (FDDA) for glucose monitoring. Glucose monitoring is necessary for the early diagnosis of diabetes complications and for health management.
Gyuri Choi +7 more
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A High TCMRR, Inherently Charge Balanced Bidirectional Front-End for Multichannel Closed-Loop Neuromodulation [PDF]
, 2019 This paper describes a multichannel bidirectional front-end for implantable closed-loop neuromodulation. Stimulation artefacts are reduced by way of a 4-channel H-bridge current source sharing stimulator front-end that minimizes residual charge drops in ...
Delgado Restituto, Manuel +4 more
core +1 more source
Analysis and Design of High-Energy-Efficiency Amplifiers for Delta-Sigma Modulators
Active and Passive Electronic Components, 2023 This study presents a dynamic amplifier with high energy efficiency and high gain suitable for a delta-sigma modulator based on the floating-inverter amplifier (FIA), in-depth analysis of the existing FIA and its improved structure, and simulation ...
Jinze Lai +6 more
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Applied Sciences, 2021 In this paper, a low-power and low-noise readout circuit for resistive-bridge microsensors is presented. The chopper-stabilized, recycling folded cascode current-feedback instrumentation amplifier (IA) is proposed to achieve the low-power, low-noise, and
Gyuri Choi +7 more
doaj +1 more source
A Chopper-Stabilized Amplifier With a Tunable Bandwidth for EEG Acquisition Applications
IEEE Access, 2019 A chopper-stabilized amplifier for bio-potential signal acquisition applications is presented. The proposed design includes an AC-coupled chopper-stabilized amplifier to reduce the 1/f noise and a tunable MOS-capacitor and a tunable pseudo-resistor to ...
Chung-Jae Lee, Jong-In Song
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Use of chopper-notch modulator in chopper amplifiers for replica images cancellation [PDF]
2008 15th IEEE International Conference on Electronics, Circuits and Systems, 2008 A method for cancelling the replica image limiting the chopper stabilization technique is presented. The modulation of the 1/f noise at the chopping frequency and its multiple are conventionally reduced by a low-pass filter and, possibly by a notch filter.
Francesco Geusa +2 more
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