Results 51 to 60 of about 3,065 (152)

A 5-nV/√Hz Chopper Negative-R Stabilization Preamplifier for Audio Applications

Micromachines, 2020
This paper presents a low-noise and low-power audio preamplifier. The proposed low-noise preamplifier employs a delay-time chopper stabilization (CHS) technique and a negative-R circuit, both in the auxiliary amplifier to cancel the non-idealities of the
Jamel Nebhen, Khaled Alnowaiser, Stephane Meillere   +2 more
doaj   +1 more source

A Novel Infrared Temperature Measurement with Dual Mode Modulation of Thermopile Sensor

Sensors, 2019
Superior to the traditional infrared temperature sensing architecture including infrared sensor and thermistor, we propose a novel sensing approach based on a single thermopile sensor with dual modes modulation.
Chih-Hsiung Shen, Shu-Jung Chen, Yi-Ting Guo   +2 more
doaj   +1 more source

Reconfigurable Sensor Analog Front-End Using Low-Noise Chopper-Stabilized Delta-Sigma Capacitance-to-Digital Converter

Micromachines, 2018
This paper proposes a reconfigurable sensor analog front-end using low-noise chopper-stabilized delta-sigma capacitance-to-digital converter (CDC) for capacitive microsensors.
Hyungseup Kim, Byeoncheol Lee, Yeongjin Mun, Jaesung Kim, Kwonsang Han, Youngtaek Roh, Dongkyu Song, Seounghoon Huh, Hyoungho Ko   +8 more
doaj   +1 more source

A 55 V, 6.6 nV/√Hz Chopper Operational Amplifier with Dual Auto-Zero and Common-Mode Voltage Tracking

Eng
For high-voltage signal detection applications, an auto-zero and chopper operational amplifier (OPA) is proposed in this paper. With the auto-zero and chopper technique, the OPA adopts an eight-channel Ping-Pong mechanism to reduce the high-frequency ...
Zhifeng Chen, Yuyan Zhang, Yaguang Yang, Chengying Chen   +3 more
doaj   +1 more source

A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier

Journal of Electrical and Computer Engineering, 2020
A wide-band and high-resolution transmitter of optical isolation amplifier is proposed for switching power supply isolation and servo motor drive applications. The transmitter is based on the chopper-stabilized technique and sigma delta modulator.
Chengying Chen, Lixia Bai, Yunrong Zhu, Tiancheng Wu   +3 more
doaj   +1 more source

Design of a low offset operational amplifier for current detection

Dianzi Jishu Yingyong
Aiming at the requirement of current detection for operational amplifier performance, a new low offset operational amplifier circuit is proposed. The closed-loop current sampling circuit is composed of low-loss op-amp, PMOS tube and resistor.
Li Xin, Yu Chen, Yang Senlin
doaj   +1 more source

A Low-Power 68.4 dB Signal-to-Noise-and-Distortion Ratio Noise-Shaping SAR ADC for Biomedical Applications

Journal of Low Power Electronics and Applications
This paper introduces a novel analog-to-digital converter (ADC) employing a passive noise-shaping (NS) technique combined with a chopper-stabilized comparator, enhancing performance and reducing ripple factor while maintaining low power consumption.
Thi Phuong Ha, The Khai Chu, Van Tung Nguyen, Orazio Aiello, Xuan Thanh Pham   +4 more
doaj   +1 more source

A 0.6-µW Chopper Amplifier Using a Noise-Efficient DC Servo Loop and Squeezed-Inverter Stage for Power-Efficient Biopotential Sensing. [PDF]

Sensors (Basel), 2020
Pham XT, Nguyen NT, Nguyen VT, Lee JW.
europepmc   +1 more source

Design of a Low-Noise Low Dropout Regulator for CMOS Pixel Sensors

IEEE Access
A low-noise Low Dropout Regulator (LDO) is designed in a Semiconductor Manufacturing International Corporation (SMIC) $0.18~\mu $ m process, aiming at supply of a clean and constant clamping voltage in the operation of Correlated Double Sampling (CDS ...
Shi Zhan, Li Xue-Kang, Zhang Ye, Feng Chong, Bo Chun-Juan   +4 more
doaj   +1 more source

Design of an SAR-Assisted Offset-Calibrated Chopper CFIA for High-Precision 4–20 mA Transmitter Front Ends

Applied Sciences
In loop-powered 4–20 mA transmitter systems, sensors like temperature, pressure, flow, and gas sensors are chosen based on specific application requirements.
Jian Ren, Yiqun Niu, Bin Liu, Meng Li, Yansong Bai, Yuang Chen   +5 more
doaj   +1 more source