A low-noise programmable gain amplifier with fully balanced differential difference amplifier and class-AB output stage

Wang, Jingyu; Zhu, Zhangming; Liu, Shubin; Ding, Ruixue

doi:10.1016/j.mejo.2017.04.012

Cited by 11 publications

(3 citation statements)

References 19 publications

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“…Compared to the fine-granular approach [45], where every element in the circuit is made scalable, the proposed approach reached the required flexibility in terms of circuit calibrating or changing the circuit performance according to the signal requirements with the following advantages: (1) smaller design area; (2) fewer switches parasitics, which led to improving the dynamic performance of the circuit; (3) less configuration memory; and (4) faster optimization time. Generally, the CFIA's gain-bandwidth product (GBW) is inversely proportional to the closed-loop gain (A CL ) [155,156] in the same fashion of the voltage-mode op-amps. Therefore, amplifying weak but high-bandwidth sensor signals demand high GBW [132], which costs more power dissipation.…”

Section: Instrumentation Amplifiermentioning

confidence: 99%

Integrated Sensor Electronic Front-Ends with Self-X Capabilities

Alraho

Zaman

Abd

et al. 2022

Chips

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The ongoing vivid advance in integration technologies is giving leverage both to computing systems as well as to sensors and sensor systems. Both conventional computing systems as well as innovative computing systems, e.g., following bio-inspiration from nervous systems or neural networks, require efficient interfacing to an increasing diversity of sensors under the constraints of metrology. The realization of sufficiently accurate, robust, and flexible analog front-ends (AFE) is decisive for the overall application system and quality and requires substantial design expertise both for cells in System-on-Chip (SoC) or chips in System-in-Package (SiP) realizations. Adding robustness and flexibility to sensory systems, e.g., for Industry 4.0., by self-X or self-* features, e.g., self-monitoring, -trimming, or -healing (AFEX) approaches the capabilities met in living beings and is pursued in our research. This paper summarizes on two chips, denoted as Universal-Sensor-Interface-with-self-X-properties (USIX) based on amplitude representation and reports on recently identified challenges and corresponding advanced solutions, e.g., on circuit assessment as well as observer robustness for classic amplitude-based AFE, and transition activities to spike domain representation spiking-analog-front-ends with self-X properties (SAFEX) based on adaptive spiking electronics as the next evolutionary step in AFE development. Key cells for AFEX and SAFEX have been designed in XFAB xh035 CMOS technology and have been subject to extrinsic optimization and/or adaptation. The submitted chip features 62,921 transistors, a total area of 10.89 mm2 (74% analog, 26% digital), and 66 bytes of the configuration memory. The prepared demonstrator will allow intrinsic optimization and/or adaptation for the developed technology agnostic concepts and chip instances. In future work, confirmed cells will be moved to complete versatile and robust AFEs, which can serve both for conventional as well as innovative computing systems, e.g., spiking neurocomputers, as well as to leading-edge technologies to serve in SOCs.

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Section: Instrumentation Amplifiermentioning

confidence: 99%

Integrated Sensor Electronic Front-Ends with Self-X Capabilities

Alraho

Zaman

Abd

et al. 2022

Chips

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“…Реализация операционных усилителей на МОП транзисторах [3,4] достаточно распространен, и обладает описанными свойствами, позволяющими реализовать усилитель ошибки с минимальным смещением выходов, однако быстродействие таких схем при обеспечении достаточной развязки ограниченно затворной емкостью входных МОП транзисторов.…”

Section: теорияunclassified

The Specialized Integrated Operational Amplifier With Four Inputs for Reducing of Error Signal Offset Voltage in Integrated Cartesian Loop in Process 180 Nm

Fakhrutdinov¹,

Murasov²,

Zav’yalov³

2019

DSMM

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Аннотация. При работе с амплитудно-модулированными сигналами требуются усилители мощности, имеющие линейную амплитудную характеристику. Одним из методов линеаризации, позволяющим существенно снизить уровень интермодуляционных продуктов третьего порядка является синфазноквадратурная обратная связь. Возникающие при работе системы в интегральном исполнении напряжения смещения сигналов нарушают работу смесителей, чем снижают эффективность линеаризации. В статье описан специализированный интегральный операционный усилитель с четырьмя входами, использующийся как усилитель сигнала ошибки, позволяющий уменьшить напряжение смещения на выходе. Усилитель спроектирован в техпроцессе 180 нм КМОП, имеет частоту единичного усиления 10 МГц, коэффициент усиления 105 дБ. Шум, приведенный ко входу на частоте 10 кГц составляет 8,5 нВ/√Гц. Потребляемый усилителем ток составляет 4,5 мА. Ключевые слова: КМОП, операционный усилитель, синфазно-квадратурная обратная связь, напряжение смещения, сигнал ошибки.

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“…All-pass active RC-filters (ARCF), which provide amplitudefrequency responses (AFR) of low-pass filter (LPF), high-pass filter (HPF), band-pass filter (BPF), rejection filter (RF) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] at different outputs, are attractive for production in a form of special structural crystals [17,18] in conditions of small volume specific type of electronic equipment. At the same time, the application of promising electronic component base in ARCF, for example, differential difference amplifiers (DDAs) [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33], which provides new properties of frequency selection devices of this class, is of considerable interest.…”

Section: Introductionmentioning

confidence: 99%

All-Pass RC-Filters Architecture with Independent Adjustment of the Main Parameters Based on Differential Difference Amplifiers

Denisenko¹,

Prokopenko²,

Butyrlagin³

2019

Adv. sci. technol. eng. syst. j.

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We have suggested an architecture of the second-order all-pass active RC-filter (ARCF), based on three differential difference amplifiers (DDA's), which provides full set of amplitude-frequency responses (AFR's) (low pass filter (LPF), high pass filter (HPF), band pass filter (BPF), rejection filter (RF)). We have given the basic equations, which allow ARCF's. The results of computer simulation of the LPF, HPF, BPF and RF's are discussed. In case of small volume production it is possible to produce the given ARCF in a form of specialized structural arrays, in which LPF, HPF, BPF and RF characteristics are realized by using one of the seven inputs, to which the processed signal is supplied, and four outputs, from which the said signal is outputted. The ARCF is noted, because its transfer ratio and pole frequency are not changed, when the pole Q-factor is adjusted.

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A low-noise programmable gain amplifier with fully balanced differential difference amplifier and class-AB output stage

Cited by 11 publications

References 19 publications

Integrated Sensor Electronic Front-Ends with Self-X Capabilities

Integrated Sensor Electronic Front-Ends with Self-X Capabilities

The Specialized Integrated Operational Amplifier With Four Inputs for Reducing of Error Signal Offset Voltage in Integrated Cartesian Loop in Process 180 Nm

All-Pass RC-Filters Architecture with Independent Adjustment of the Main Parameters Based on Differential Difference Amplifiers

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