Auto-zero differential difference amplifier

Kayal, Maher; Randjelović, Z.

doi:10.1049/el:20000579

Cited by 15 publications

(7 citation statements)

References 1 publication

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“…The analog front-end has two stages. The first stage is an auto-zeroed differential difference amplifier (DDA) [5] whose input offset voltage is better than 30 V. The second stage is a buffer amplifier providing certain driving capabilities at the microsystem output. The analog front-end is repeated twice in order to provide continuous time output of the microsystem by employing the ping-pong technique [4].…”

Section: Microsystem Architecturementioning

confidence: 99%

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Highly sensitive Hall magnetic sensor microsystem in CMOS technology

Randjelović¹,

Kayal

Popović

et al. 2002

IEEE J. Solid-State Circuits

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A highly sensitive magnetic sensor microsystem based on a Hall device is presented. This microsystem consists of a Hall device improved by an integrated magnetic concentrator and new circuit architecture for the signal processing. It provides an amplification of the sensor signal with a resolution better than 30 V and a periodic offset cancellation while the output of the microsystem is available in continuous time. This microsystem features the overall magnetic gain of 420 V/T.

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Section: Microsystem Architecturementioning

confidence: 99%

“…After substituting (3) into (4), the output signal is (5) In (5), the first term is a desirable amplified output signal. The second term is an undesirable residual sensor offset, which is also amplified.…”

Section: Microsystem Architecturementioning

confidence: 99%

Highly sensitive Hall magnetic sensor microsystem in CMOS technology

Randjelović¹,

Kayal

Popović

et al. 2002

IEEE J. Solid-State Circuits

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“…5), using MOSFET power transistor [8] connected at two operational amplifiers to get output voltage (Vo) linearity as function of input voltage (Vi) of operational amplifier, the LM308 integrate circuit was used, this circuit is coupled at the PV module to drain its current Im since open circuit to short circuit. Also triangle voltage generator was designed using CI555 The PV module current (Im) is sensed with Rm obtaining analogue voltage signal and it is amplified using a difference amplifier [9] whose output voltage VIm for full scale is 5 V, the PV module voltage (Vm) is attenuated with an inverter amplifier. The inverter amplifier adapts the output voltage of PV module from 20 to 5 V and the difference amplifier adapts Rm voltage as current sample, and its output voltage change from 0 to 5 V. as operational amplifier were used the integrated circuit TL081.…”

Section: Electronic Designmentioning

confidence: 99%

Development of the Electronic System for Obtaining the I-V and P-V Curves of Photovoltaic Module Using a Personal Computer

Pérez¹,

García²,

Pérez³

2016

RCS

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The test, construction and design of an electronic system in order to measure the electrical characteristic curves of the photovoltaic (PV) module is reported, this electronic system reflects toward the PV module a variable resistance, sampling and capturing the PV module current and voltage, after using software the current and voltage signals are process in order to determinate the power, and also the PV module current-voltage and power voltage curves are gotten, This information is used for engineers who design PV systems to supplies electrical energy from sun energy to whatever equipment, the electronics circuit was made using electrical and electronics devices bought in México. Experimental results were done with 20 W. PV modules manufactured in CINVESTAV Mexico.

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“…The analog front-end is a low-noise, low-offset block here implemented as a differential-differences amplifier (DDA) [8]- [10] followed by the preamplifier. At the output of the preamplifier the signal is increased and as such is fed to the output stage where it is demodulated.…”

Section: System Architecturementioning

confidence: 99%

A current-mode back-end for a sensor microsystem

Ajbl

Pastre

Kayal

2011

2011 IEEE 9th International New Circuits and Systems Conference

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This paper presents a voltage-to-current converter as a current-mode output buffering stage for sensor interfaces. The converter can be used in any microsystem needing a current output. It is presented here in the context of a Hall sensor microsystem. The system is fully differential with an output stage that converts a discrete input voltage into a continuous current. The Hall sensor microsystem, using the voltage-to-current back-end, has been fabricated and measured in a 0.35 ȝm CMOS technology. The entire system performs with non-linearity lower than ±0.08% and maximum output current of ±3mA.Index Terms-Current-mode ouput stage, fully integrated sensor microsystem

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Auto-zero differential difference amplifier

Cited by 15 publications

References 1 publication

Highly sensitive Hall magnetic sensor microsystem in CMOS technology

Highly sensitive Hall magnetic sensor microsystem in CMOS technology

Development of the Electronic System for Obtaining the I-V and P-V Curves of Photovoltaic Module Using a Personal Computer

A current-mode back-end for a sensor microsystem

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