Results 231 to 240 of about 1,437 (273)
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A vaersatile chopper-stabilized rail-to-rail operational amplifier
2008 51st Midwest Symposium on Circuits and Systems, 2008This 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, 1991Abstract 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), 2018This 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, 2007This 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, 2011In 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
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CMOS amplifier using chopper stabilization and sample-and-hold techniques
TENCON 2007 - 2007 IEEE Region 10 Conference, 2007A low-noise CMOS amplifier operating at a low supply voltage is developed using the noise reduction technique of chopper stabilization. Unlike the conventional chopper stabilization technique that uses low pass filter to reduce the low frequency noise, the proposed amplifier uses the chopper stabilization technique and replaces the demodulator and the ...
T. S. Liu, null Chia-Jiu Wang
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Chopper Stabilization of Analog Multipliers, Variable Gain Amplifiers, and Mixers
IEEE Journal of Solid-State Circuits, 2008We describe a general offset-canceling architecture for analog multiplication using chopper stabilization. Chopping is used to modulate the offset away from the output signal where it can be easily filtered out, providing continuous offset reduction which is insensitive to drift.
Philip Godoy, Joel L. Dawson
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High-Precision Bandgap Voltage Generation Method With Chopper Stabilization Technique
2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC), 2019A Three-level chopping technique to reduce offset caused by mismatch of the Wilson Current-mirror and PNP bipolar transistor is descried and presented. Input referred offset voltage of the PNP transistor is reduced on first level. On second level, Wilson Current-mirror offset is further reduced along with the low frequency 1/f noise caused by the self ...
Li Chuang-ze +3 more
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Design of novel chopper stabilized rail-to-rail operational amplifier
2015 IEEE 11th International Conference on ASIC (ASICON), 2015A chip design of novel chopper stabilized operational amplifier was presented, chopper-wave modulation and demodulation was used in this architecture, and its 1/f noise was decreased largely. To extend input common mode voltage range, a novel rail-to-rail differential amplifier was adapted in the input stage.
Xu Yong +3 more
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A chopper stabilized voltage reference using diode-connected MOS transistor
2010 International Symposium on Intelligent Signal Processing and Communication Systems, 2010A reference using diode-connected MOS transistor and incorporating chopper stabilization is proposed. Mutual compensation of mobility and threshold voltage temperature effects provides good temperature stability; chopper stabilization improves the initial accuracy and noise performance.
null Lin Jie +3 more
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