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An ultralow noise preamplifier for low frequency noise measurements
Review of Scientific Instruments, 2009Low frequency noise measurements are among the most sensitive tools for the investigation of the quality and of the reliability of semiconductor devices. The sensitivity that can be obtained depends on the background noise of the low noise preamplifier coupled to the device under test (DUT) that, at very low frequencies, is dominated by flicker noise ...
CANNATA', GIANLUCA +2 more
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Low noise and low cost neural amplifiers
2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007Extracellular neural signal acquisition requires low noise, high gain, low power, and low cost amplifiers. This paper presents amplifiers with a simple architecture that ensures a good compromise among these characteristics. We present three amplifiers based on the same architecture, in which the first stage is a differential pair, respectively based ...
Guilherme Bontorin +2 more
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A low-noise low-drift transducer ADC
IEEE Journal of Solid-State Circuits, 1997An analog-to-digital converter (ADC) is described that takes the output from a load-cell transducer directly and performs amplification and signal-conditioning as well as high-resolution conversion. A very low offset drift of 10 nV//spl deg/C is achieved by a chop mode that includes the entire analog signal path.
Damien McCartney +3 more
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The Journal of the Acoustical Society of America, 1985
A practical method of computation is described for making periodic signals V(t) which have a given frequency spectrum and which minimize the variance 〈(V2−〈V〉2)2〉 in power as a function of time. These signals can be used to measure the spectral response of a system (the transfer function): They represent a significant improvement over traditional ...
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A practical method of computation is described for making periodic signals V(t) which have a given frequency spectrum and which minimize the variance 〈(V2−〈V〉2)2〉 in power as a function of time. These signals can be used to measure the spectral response of a system (the transfer function): They represent a significant improvement over traditional ...
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Ultra low-noise preamplifier for low-frequency noise measurements in electron devices
IEEE Transactions on Instrumentation and Measurement, 1991The design and realization of an ultra-low-noise, high-input-impedance amplifier for low-frequency noise measurements in electronic devices is presented. Special care is devoted to the solution of typical problems encountered in the design of low-noise low-frequency equipment, such as power supply noise and temperature fluctuations. The ultra-low-noise
NERI, BRUNO +2 more
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Low-frequency noise in low 1/f noise dc SQUID’s
Applied Physics Letters, 1986We demonstrate that the low-frequency noise in our edge junction dc superconducting quantum interference devices, with a basic 1/f flux noise of 2×10−12 Φ20/Hz at 1 Hz, can all be accounted for in terms of junction critical current fluctuations. A novel modulation readout scheme is able to cancel the effect of junction critical current fluctuations and
V Foglietti +6 more
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Broadband noise and distortion cancelling low noise amplifier
2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS), 2017In this paper, a new broadband low noise amplifier (LNA) is proposed. The LNA utilizes a composite NMOS/PMOS cross-coupled transistor pair and a difference amplifier to in-crease the linearity while reducing the noise figure. The introduced approach provides partial cancellation of distortion and noise generated by the input transistors, hence ...
Ahmad Qassem Dawoud +2 more
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A noise optimization technique for integrated low-noise amplifiers
IEEE Journal of Solid-State Circuits, 2002Based on measured four-noise parameters and two-port noise theory, considerations for noise optimization of integrated low-noise amplifier (LNA) designs are presented. If arbitrary values of source impedance are allowed, optimal noise performance of the LNA is obtained by adjusting the source degeneration inductance.
Jung-Suk Goo +5 more
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1998 Conference on Optoelectronic and Microelectronic Materials and Devices. Proceedings (Cat. No.98EX140), 2002
The theory of input equivalent noise is detailed and applied to the design of low noise amplifiers suitable for high impedance (>100 M/spl Omega/) photovoltaic IR detectors and relatively low impedance (
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The theory of input equivalent noise is detailed and applied to the design of low noise amplifiers suitable for high impedance (>100 M/spl Omega/) photovoltaic IR detectors and relatively low impedance (
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