Results 221 to 230 of about 7,866 (268)

31.4 A Chopper-Stabilized Amplifier with -107dB IMD and 28dB Suppression of Chopper-Induced IMD

2021 IEEE International Solid- State Circuits Conference (ISSCC), 2021
Amplifiers often employ chopping to achieve low offset and low-frequency noise. However, the interaction between the input signal and the chopper clock can cause chopper-induced intermodulation distortion (IMD) [1] –[5]. This is especially problematic for input frequencies (Fin) near even multiples of the chopping frequency (FCH), as the resulting IMD ...
Rooijers, C.T. (author), Karmakar, S. (author), Kusuda, Yoshinori (author), Huijsing, J.H. (author), Makinwa, K.A.A. (author)   +4 more
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Generalized chopper stabilization

ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002
The concept of traditional chopper-stabilized amplifiers is extended to linear dynamical and certain types of nonlinear circuits. Simulation results are given to confirm the theory.
L. Toth, Y. Tsividis
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Chopper-stabilized sigma-delta modulator

1993 IEEE International Symposium on Circuits and Systems, 2002
A new architecture of the sigma-dela modulators using a chopper-stabilized configuration is described. It is shown that using this new architecture and without any other circuit techniques, a sigma-delta modulator becomes immune from the contamination of the inherent low-frequency noise, such as offset noise, flicker noise, and clock feedthrough noise.
Y.-H. Chang, C.-Y. Wu, T.-C. Yu
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Chopper-stabilized operational transconductance amplifiers

IEEE Transactions on Instrumentation and Measurement, 1993
A technique for chopper-stabilizing commercial linearized operational transconductance amplifiers (OTAs) to remove output offset current errors is described. Design equations which illustrate performance tradeoffs as a function of component values are given. The results are verified experimentally using a common bipolar OTA. >
S.E. Nordquist, J.W. Haslett, F.N. Trofimenkoff   +2 more
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Chopper stabilized integrated Hall effect magnetometer

2009 International Conference on Microelectronics - ICM, 2009
This paper presents a low noise, low offset and wide dynamic range Hall effect magnetometer integrated in a 0.35 µm CMOS technology. It features a spinning-current operated Hall device and a chopper stabilization, which has been unconventionally implemented using high-pass filters. The magnetometer exhibits 350 µT offset, can measure magnetic fields up
Cyrius Ouffoue, Luc Hebrard, Vincent Frick, Christian Kern   +3 more
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A chopper-stabilized high-pass Delta–Sigma Modulator with reduced chopper charge injection

Microelectronics Journal, 2011
In this paper, a chopper-stabilized high-pass Delta-Sigma Modulator (DSM) is reported with experimental results. A new circuit technique to suppress the residual offset caused by the chopper switch charge injection is proposed. Enabled by an amplifier sharing architecture, the technique diverts the error charge generated by the critical chopper to the ...
Yin-Sheng Zhao, Siu-kei Tang, Chi-tung Ko, Kong-pang Pun   +3 more
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E/D NMOS chopper-stabilized op AMP

Journal of Electronics (China), 1988
This paper discusses the design method of E/D NMOS chopper-stabilized op amp. The offset factors are analyzecd and the new formulae are derived. The test circuit is simulated with the SPICE-II, and the experiment of the test chip shows a satisfactory result.
Zheng Junli, Gong Mingfu, Li Yongming
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Enhanced IIP2 Chopper Stabilized Direct Conversion Mixer Architecture

2019 32nd International Conference on VLSI Design and 2019 18th International Conference on Embedded Systems (VLSID), 2019
This paper presents an improved Second Order Input Intercept Point (IIP2) Direct Conversion Mixer architecture by introducing chopping in the standard active double balanced mixer. The mixing frequency required is half of the RF frequency. This technique improves the second order linearity of the mixer. There is only one active mixer in the signal path
Rohit Rothe, Rajesh Zele
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A Chopper Stabilized Pre-amplifier for Magnetic Sensor

2012 International Conference on Industrial Control and Electronics Engineering, 2012
This paper introduced chopping principle and presented a design of chopper stabilized pre-amplifier for magnetic sensor. Compared with auto-zeroing technique, chopping technique does not fold noise to DC and the noise performance is better. This chopper stabilized pre-amplifier used the integrated instrumentation amplifier AD620 as the main amplifier ...
Zhao Jing, Zhang Shuang, Chen Shudong
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Transient processes and stability in an LC chopper

IEEE Transactions on Aerospace and Electronic Systems, 1988
The analysis of the transient and steady-state processes in LC choppers is presented. The method, used previously for the analysis of processes in grid-connected and self-commutated converters, is adjusted for analysis of LC chopper's processes. The difference equations describing these processes, are obtained and solved. The analytical solution of the
M.A. Slonim, Z.M. Kremer
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