0.65V class-AB current-mode four-quadrant multiplier with reduced power dissipation

Kasimis, Chrisostomos; Psychalinos, Costas

doi:10.1016/j.aeue.2010.10.001

Cited by 25 publications

(14 citation statements)

References 5 publications

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“…wherê=̂/2 is the realized time constant. The output current is established as out = in − out 1 , and employing (16), the transfer function in (8) is also realized by the topology in Figure 6. Thus, it approximates a differentiator within a frequency range where the condition ≪ /̂is valid.…”

Section: Log-domain Realization Of Neomentioning

confidence: 99%

Companding Realizations of the Nonlinear Energy Operator

Demartinos

Kasimis

Laoudias

et al. 2013

ISRN Biomedical Engineering

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Realizations of the nonlinear energy operator (NEO), using the concept of companding filtering, are introduced and compared in this work. For this purpose, the Log-Domain and Sinh-Domain filtering techniques have been followed. Both topologies are constructed from differentiator and multiplier blocks which have been realized through the utilization of nonlinear transconductor cells. Both of the proposed topologies offer the capability of ultra-low voltage operation, thanks to the employment of MOS transistors in the weak inversion. Considering a single power supply voltage of 0.5 V, the behavior of the proposed NEO realizations has been simulated using the Analog Design Environment of the Cadence software and the design kit of the TSMC 130 nm process. Comparison results show that the Sinh-Domain realization offers a more power efficient design than that offered by the Log-Domain realization.

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Section: Log-domain Realization Of Neomentioning

confidence: 99%

Companding Realizations of the Nonlinear Energy Operator

Demartinos

Kasimis

Laoudias

et al. 2013

ISRN Biomedical Engineering

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“…Current-mode fourquadrant multipliers using MOS transistors biased in the weak inversion have been already proposed by Chang and Liu (1998) ;Gravati, Valle, Ferri, Guerrini, and Reyes (2005); Kasimis and Psychalinos (2011); Sawigun and Serdijn (2009) ;Tanno, Sugahara, and Tamura (2011). Depending on the capability for handling currents with levels greater than the bias current, the multipliers could be categorised as class-AB and class-A type.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the capability for handling currents with levels greater than the bias current, the multipliers could be categorised as class-AB and class-A type. The multipliers given by Kasimis and Psychalinos (2011); Sawigun and Serdijn (2009) are class-AB topologies and the achievement for handling currents greater than the DC bias current has been performed at the expense of increased circuit complexity and DC power dissipation. The class-A multiplier given by Chang and Liu (1998) operates in a ±0.75 V *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Ultra-low voltage CMOS current-mode four-quadrant multiplier

Demartinos

Psychalinos

Khateb

2014

International Journal of Electronics Letters

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A novel configuration of a four-quadrant current multiplier is introduced in this paper. The realisation is achieved through the utilisation of the voltage translinear principle; the derived topology simultaneously offers the attractive benefits of ultra-low voltage operation and reduced DC power dissipation, in comparison with the corresponding already published multipliers. The above have been achieved without increasing the circuit complexity. The behaviour of the multiplier has been evaluated through simulation results, using the Analog Design Environment and the design kit provided by the Taiwan Semiconductor Manufacturing Company 180 nm complementary metal-oxide semiconductor process.

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“…The required expansion is realised by a suitable hyperbolic sine function, in order to preserve the linear operation of the whole system. The main important feature of sinh-domain circuits is their inherent class-AB operation that allows the handling of signals with amplitude larger than the bias current (Kasimis & Psychalinos, 2011, 2012a, 2012bKatsiamis, Glaros, & Drakakis, 2008;Pilavaki & Psychalinos, 2011;Poort, Serdijn, Mulder, van der Woerd, & van Roermund, 1999;Sawigun & Serdijn, 2009;Serdijn, Kouwenhoven, Mulder, & van Roermund, 1999).…”

Section: Introductionmentioning

confidence: 99%