Results 231 to 240 of about 7,866 (268)

A Low Noise Operational Amplifier Design Using Chopper Stability

Key Engineering Materials, 2013
Noise has become a significant bottleneck limiting the performance of the op amp, and chopper stabilization technology [1] is commonly used to reduce the noise of the op amp. The chopper stabilization technology can significantly reduce the low-frequency 1/f noise of op amp, then reducing the total low-frequency noise of op amp.
Xiao Wei Liu, Liang Liu, Jian Yang, Song Chen, Wei Ping Chen   +4 more
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All MOS transistors bandgap reference using chopper stabilization technique

2010 International SoC Design Conference, 2010
A 0.6-V, 8-μW bandgap reference without BJTs is realized in the standard CMOS 0.13μm technology. All MOS transistors bandgap reference circuit with very low supply voltage 0.6V is designed. The chopper stabilization technique is used to improve the accuracy of the bandgap reference voltage.
H. D. Roh, J. Roh, Q. Z. Duan Duanquanzhen   +2 more
openaire   +1 more source

Chopper stabilized laser-Doppler skin blood velocimeter

SPIE Proceedings, 1993
Laser-Doppler velocimetry (LDV) is an established technique for noninvasive monitoring of skin blood flow. The LDV is based on the interference between the photons scattered from the moving red cells and the surrounding stationary tissue. In this work we have developed a new chopper stabilized LDV method.
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Chopper stabilized sub 1V reference voltage in 65nm CMOS

2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS), 2015
A sub 1V reference circuit is proposed, that exploits the CTAT and PTAT voltages in the beta multiplier circuit to attain a stable voltage with temperature and power supply. A one-time calibration is integrated in the architecture to get a good performance over process. Further, chopper stabilization is proposed in the circuit itself rather than in the
Rakesh Kumar Palani, Aravindhan Rangarajan, Ramesh Harjani   +2 more
openaire   +1 more source

Design and Implementation of chopper-stabilized amplifiers

2010
One observation from the two neural amplifiers described in the previous two chapters is the dominance of flicker noise. Most of the existing power-noise optimization techniques target thermal noise. However, flicker noise is a significant concern for EMG/EEG/ECoG applications, where the bandwidth of interest is much lower (
Jeremy Holleman, Fan Zhang, Brian Otis
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A vaersatile chopper-stabilized rail-to-rail operational amplifier

2008 51st Midwest Symposium on Circuits and Systems, 2008
This paper presents the design and measured results of a low power high bandwidth versatile rail-to-rail input/output chopper-stabilized amplifier. The core of the amplifier is a folded-cascode OTA, with complementary input pairs for rail-to-rail input capability, a push-pull class-AB output stage is used to provide rail-to-rail output capability.
null Fuding Ge, Bahar Jalali-Farahani
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Accurate Airborne Surface Temperature Measurements with Chopper-stabilized Radiometers

Journal of Atmospheric and Oceanic Technology, 1991
Abstract The accuracy of chopper-stabilized radiometers for the meteorological measurement of surface temperatures was investigated during a series of airborne trails, including tests at high altitude using a pressurized aircraft. The significant finding was that these radiometers need to be frequently calibrated during flight to ensure accurate ...
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Design of Chopper Stabilized Preamplifier for ECG monitoring System

2018 4th International Conference on Devices, Circuits and Systems (ICDCS), 2018
This paper proposes a high gain Chopper stabilized preamplifier for the ECG monitoring system. In analog based ECG acquisition front end, a low noise amplifier is required to have a large dynamic range of 0.1 to 250Hz. A Chopper stabilized preamplifier is proposed which has high gain and removes the flicker noise.
A. Uma, C. SelvaGangai, P. Kalpana
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A Chopper Stabilized Pre-amplifier for Biomedical Signal Acquisition

2007 International Symposium on Integrated Circuits, 2007
This paper presents a low-power and low-voltage pre-amplifier for biomedical signal acquisition application. The main blocks of the pre-amplifier consist of a chopper stabilized VGA, and a 4th order filter. The amplifier serves to improve the noise figure at low frequency by extensively modulating the flicker noise to the 16 kHz chopper frequency.
Grani A. Hanasusanto, Yuanjin Zheng
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A low-power and low-complexity chopper-stabilized amplifier

2011 IEEE International Conference of Electron Devices and Solid-State Circuits, 2011
In this paper, a low-power, low-complexity chopper amplifier was proposed. The equivalent input noise and offset is reduced by using the chopper stabilization technique with a chopping frequency of 1.0 MHz. Based on a 0.35µm CMOS technology with power supply of 3.3V, the chopper amplifier was designed successfully with chip area of 0.02 mm2 and power ...
K. Wang, Z. H. Wu, M. J. Zhao, B. Li
openaire   +1 more source