Mixed-mode quadrature oscillator using a single DDCCTA and grounded passive components

Phatsornsiri, Punnavich; Lamun, Panit; Kumngern, Montree

doi:10.1109/iciteed.2015.7408998

Cited by 2 publications

(1 citation statement)

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“…These devices offer an addition and subtraction of input voltages, with the result available at zero-impedance output, followed by an additional transconductance stage. The DDCCTAs and DDTAs are often used to implement quadrature oscillators [15], [16], [17] and universal filters [18], [19], [20], [21], [22], [23], [24].…”

Section: Introductionmentioning

confidence: 99%

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

2023

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This paper presents a universal voltage-mode filter and quadrature oscillator based on low-voltage multiple-input differential difference transconductance amplifier (MI-DDTA). Unlike the previous published DDTAs, that utilize the bulk-driven (BD) multiple-input MOS transistor technique (MI-MOST) in the differential pair of the first stage only, the proposed DDTA, for the first time, utilize the BD MI-MOST in the second stage of the DDTA. This results in capability of providing more arithmetic operations without additional current branches or power dissipation. Hence, simplify the topology of the filter and oscillator applications, by decreasing the count of active blocks. The voltage-mode filter offers high-input and low-output impedances, and both non-inverting and inverting versions of five types of transfer functions, namely low-pass, high-pass, band-pass, band-stop, and all-pass characteristics. The oscillator offers threephase of quadrature signals, and orthogonal control of the condition and frequency of oscillations. The circuit was designed in Cadence environment using 180 nm CMOS TSMC technology. The voltage supply is 0.5 V and the power consumption of the filter is 472 nW. The simulation results are in accordance with theory and confirm the performance of the proposed circuit.

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Section: Introductionmentioning

confidence: 99%

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

2023

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1-V Mixed-Mode Universal Filter Using Differential Difference Current Conveyor Transconductance Amplifiers

Kumngern,

Khateb,

Kulej

2024

Applied Sciences

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This paper presents a mixed-mode universal filter using differential difference current conveyor transconductance amplifiers (DDCCTA). Despite using a minimum number of MOS differential pairs, the proposed DDCCTA is a multiple-input, multiple-output device, that was achieved using the multiple-input bulk-driven MOS transistor (MIBD-MOST) technique, multiple-output current followers and transconductance gains. A subthreshold technique is used to achieve minimum power consumption of the DDCCTA. Thanks to the multiple-input and multiple-output of DDCCTA, the mixed-mode universal filter based on the proposed element can realize five standard filter responses, i.e., low-pass, high-pass, band-pass, band-stop, and all-pass responses, of four modes, i.e., voltage-mode, current-mode, transadmittance-mode, and transimpedance-mode, thus providing 194 filter responses from a single circuit. The natural frequency and quality factor of the filter response can be controlled electronically and orthogonally. The proposed DDCCTA and mixed-mode universal filter are simulated and designed using 0.18 μm CMOS technology to confirm the functionality of the new circuit. The mixed-mode universal filter uses ±0.5 V of supply voltage and consumes 0.374 mW of power when operating at a natural frequency of 10 kHz.

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Mixed-mode quadrature oscillator using a single DDCCTA and grounded passive components

Cited by 2 publications

References 12 publications

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

1-V Mixed-Mode Universal Filter Using Differential Difference Current Conveyor Transconductance Amplifiers

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