In this article, a new solution for an ultralow-voltage (ULV) ultralow-power (ULP) operational transconductance amplifier (OTA) is presented. Thanks to the combination of low-voltage bulk-driven nontailed differential stage with multipath Miller zero compensation technique, simple class AB power-efficient ULV structure has been obtained, which can operate from supply voltages less than threshold employed MOS transistors, while offering rail-to-rail input common-mode range at same time. The...

A flux-controlled memristor emulator built with off-the-shelf electronic devices and based on a TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> model is presented in this article. The circuit proposed article uses the current mode approach analog building blocks such as second-generation conveyor (CCII) an operational transconductance amplifier (OTA) active element few passive elements. shows clear fingerprint of ideal memristor....

Summary A family of bulk‐driven CMOS operational transconductance amplifiers (OTAs) has been designed for extremely low supply voltages (0.3‐0.5 V). Three OTA design schemes with different gain boosting techniques and class AB input/output stages are discussed. detailed comparison among these presented in terms performance characteristics such as voltage gain, gain‐bandwidth product, slew rate, circuit sensitivity to process/mismatch variations, silicon area. The procedures all the compared...

This paper presents the design and implementation of fractional-order filters based on promising CMOS structure Differential Difference Current Conveyor (DDCC), which was designed fabricated using 0.35 μm AMIS process. The derivation has been achieved a second-order approximation corresponding transfer functions. offer benefit low-voltage (±500 mV) operation as well requirement grounded passive elements. In addition, technique for quick high-order introduced. simulation experimental results...

A new solution for an ultra-low-voltage, ultra-low-power operational transconductance amplifier (OTA) is presented in the paper. The design exploits a three-stage structure with Reversed Miller Compensation Scheme, where input stage based on non-tailed bulk-driven differential pair. Optimization of very low supply voltage discussed. resulting outperforms other ultra-low-voltage OTAs terms DC gain and power efficiency, expressed by standard figures merit. Experimental verification using...

A new silicon realization of an ultra-low-voltage and ultra-low-power differential-difference amplifier (DDA) is presented in this paper. The circuit combines the idea non-tailed bulk-driven differential pairs with a partial positive feedback used for voltage gain boosting. DDA operates from VDD ranging 0.3 to 0.5 V. For 0.3-V version, provides measured DC larger than 60 dB, GBW product 1.85 kHz, PSRR 57 dB average slew-rate 1.55 V/ms at 20 pF load capacitance, while consuming only 22 nW...

This article proposes a charged controlled emulator model for memristor and memcapacitor using second-generation Current Conveyor (CCIIs) Analog Multiplier (AM). The grounded floating mem-element circuits have been designed two CCIIs one multiplier in addition to some passive components. type of design requires three resistors capacitors while necessitates only capacitors. With the help switch, proposed can be easily switched into or memcapacitor. has theoretically analyzed simulated PSpice...

This article presents the experimental results for a multiple-input operational transconductance amplifier (MI-OTA). To achieve extended linearity under 0.5-V low voltage supply, circuit employs three linearization techniques: bulk-driven (BD), source degeneration, and input attenuation created by MI metal-oxide-semiconductor transistor technique (MI-MOST). Although techniques result in reduced dc gain, self-cascode transistors are used to boost gain of MI-OTA. Furthermore, MI-MOST...

This paper presents a novel mixed-mode, low-power, 1 V analog filter that uses multiple-input multiple-output operational transconductance amplifiers (MIMO-OTAs). four OTAs, two grounded capacitors, and one resistor offers modes, namely voltage, current, transconductance, transimpedance modes. Each mode of operation provides non-inverting inverting low-pass, high-pass, band-pass, band-stop, all-pass transfer functions (10 functions). Thus, in operating the designed 40 functions, which is...

In this study, a high-frequency floating-type memristor emulator has been presented. The proposed circuit uses current conveyor transconductance amplifier, second generation conveyor, three resistors and grounded capacitor. presented can be configured in both incremental decremental configurations performs well up to 5 MHz. equivalent equation is verified by theoretical analysis of the which also includes non-ideal analysis. proposition through personal simulation program with integrated...

This paper introduces the novel design of a low-voltage low-power voltage rectifier based on bulk-driven (BD) winner-take-all (WTA) circuit. The proposed circuit is able to work as half- or full-wave and it specifically designed for battery-powered implantable wearable medical devices. main attractive features are topology simplicity, minimal number transistors, accuracy capability rectifying signals with relatively wide range frequencies amplitudes. was single supply 0.6 V consumes about...

A new solution for an ultra-low-voltage, low-power, bulk-driven fully differential-difference amplifier (FDDA) is presented in the paper. Simulated performance of overall FDDA a 50 nm CMOS process and supply voltage 0.4 V, shows dissipation power 31.8 μW, open loop gain 58.6 dB gain-bandwidth product (GBW) 2.3 MHz 20 pF load capacitance. Despite very low voltage, exhibits rail-to-rail input/output swing. The circuit has also been tested two applications; differential follower second-order...

This paper presents a 0.5 V fifth-order Butterworth low-pass filter based on multiple-input operational transconductance amplifiers (OTA). The is designed for electrocardiogram (ECG) acquisition systems and operates in the subthreshold region with nano-watt power consumption. used technique simplifies overall structure of OTA reduces number active elements needed to realize filter. was simulated Cadence environment using 0.18 µm Complementary Metal Oxide Semiconductor (CMOS) process from...

This paper proposes the simulated and experimental results of a universal filter using voltage differencing differential difference amplifier (VDDDA). Unlike previous complementary metal oxide semiconductor (CMOS) structures VDDDA that is present in literature, one compact simple, owing to employment multiple-input (MOS) transistor technique. The presented employs two VDDDAs, resistor grounded capacitors, it offers low-pass: LP, band-pass: BP, band-reject: BR, high-pass: HP all-pass: AP...

An emulator circuit of Memristor, Memcapacitor, and Meminductor commonly termed as mem-elements has been demonstrated in this article. The realized using the technique current mode, which provides better performance over voltage mode counterparts. analog building blocks, along with a few passive components, have used presented implementation. fingerprint characteristics observed both simulation experimental results, validating theoretical analysis. robustness design supported by performing...

This paper presents the design of a voltage-mode three-input single-output multifunction first-order filter employing commercially available LT1228 IC for easy verification proposed circuit by laboratory measurements. The is very simple, consisting single as an active device with two resistors and one capacitor. output voltage node low impedance, resulting in cascade-ability other configurations. provides four responses: low-pass (LP), high-pass (HP), inverting all-pass (AP-), non-inverting...

This paper presents a new low-voltage CMOS structure for operational transconductance amplifier (OTA) exploiting the bulk-driven, self-cascode and multiple-input transistor techniques (MI). The OTA (MIOTA) circuit operates in subthreshold region using 0.5V supply voltage offers enhanced linearity. MIOTA is developed biopotential signal as well electrocardiogram (ECG) processing it exploited to design 5th-order Chebyshev low-pass 3rd-order band-pass filters with dynamic range (DR) of 57.6 dB...

This paper presents a new application of the multiple-input operational transconductance amplifier (MI-OTA). The MI-OTA has been used to realize first-order universal filter which shows that transfer functions such as low-pass, high-pass, and all-pass filters can be obtained easily from single topology by applying input signal appropriate terminals. Moreover, both non-inverting inverting all filtering obtained. pole frequency also controlled electronically. have selected high-quality...