A nonlinear macromodel for current backward transconductance amplifier

Márquez-Cabrera, A.; Sánchez–López, C.

doi:10.1016/j.aeue.2020.153286

Cited by 5 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this manner, and as already demonstrated in [2], the CMOS operational transconductance amplifier (OTA) is helpful to reduce the silicon area when designing chaotic systems. Other CMOS amplifiers that are useful to design chaotic oscillators are summarized in [16], and others include the following: voltage differencing transconductance amplifier (VDTA) [17], current backward transconductance amplifier (CBTA) [18], operational trans-resistance amplifier (OTRA) [19], secondgeneration current conveyor (CCII), differential-input double-output transconductance amplifier (DOTA+), and differential voltage current conveyor (DVCC) [20]. Among them, the OTA shows advantages to develop cryptographic applications [21].…”

Section: Introductionmentioning

confidence: 99%

CMOS OTA-Based Filters for Designing Fractional-Order Chaotic Oscillators

et al. 2021

View full text Add to dashboard Cite

Fractional-order chaotic oscillators (FOCOs) have shown more complexity than integer-order chaotic ones. However, the majority of electronic implementations were performed using embedded systems; compared to analog implementations, they require huge hardware resources to approximate the solution of the fractional-order derivatives. In this manner, we propose the design of FOCOs using fractional-order integrators based on operational transconductance amplifiers (OTAs). The case study shows the implementation of FOCOs by cascading first-order OTA-based filters designed with complementary metal-oxide-semiconductor (CMOS) technology. The OTAs have programmable transconductance, and the robustness of the fractional-order integrator is verified by performing process, voltage and temperature variations as well as Monte Carlo analyses for a CMOS technology of 180 nm from the United Microelectronics Corporation. Finally, it is highlighted that post-layout simulations are in good agreement with the simulations of the mathematical model of the FOCO.

show abstract