Design of a new low power MISO multi-mode universal biquad OTA-C filter

Parvizi, Mostafa

doi:10.1080/00207217.2018.1540064

Cited by 16 publications

(6 citation statements)

References 38 publications

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“…compares the proposed circuit with most recent published works [6−11]. While the works in [7−9, 11] use only commercially available integrated circuit without CMOS structure, the works in [6,10] use only a conventional CMOS OTA structure (i.e. well known OTA with one input).…”

Section: Resultsmentioning

confidence: 98%

“…well known OTA with one input). Compared with [6], the proposed filter can be easily transformed into a quadrature oscillator. Although using the topology in [6] one can obtain five standard filtering responses, they are achievable only with the use of different modes of operation (voltage−mode, current−mode, transresistance−mode, transconductance−mode).…”

Section: Resultsmentioning

confidence: 99%

“…Compared with [6], the proposed filter can be easily transformed into a quadrature oscillator. Although using the topology in [6] one can obtain five standard filtering responses, they are achievable only with the use of different modes of operation (voltage−mode, current−mode, transresistance−mode, transconductance−mode). Compared with [8−10], the proposed filter provides full non-inverting and inverting realization of five standard filtering responses and offers a three−phase quadrature oscillator.…”

Section: Resultsmentioning

confidence: 99%

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Multiple-Input Universal Filter and Quadrature Oscillator Using Multiple-Input Operational Transconductance Amplifiers

et al. 2021

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This paper presents a new multiple-input single−output voltage-mode universal biquad filter based on multiple−input operational transconductance amplifiers (MI-OTA). This work demonstrates that the multiple-input OTA−based universal filter can provide more filtering responses and other benefits, compared to conventional OTA−based one. The filter provides electronic and orthogonal control of the natural frequency and the quality factor. Furthermore, a two-phase quadrature oscillator can be obtained by slightly modifying the proposed universal filter while the condition and frequency of oscillation can be controlled orthogonally and electronically. The performance of the proposed circuit is evaluated in Cadence environment using the TSMC 0.18 µm CMOS technology. The voltage supply is 1.2 V and the power dissipation of the MI−OTA is 24 µW. For 1% third intermodulation distortion (IMD3) the dynamic range of the band−pass filter is 78.6 dB. In addition, the proposed filter and oscillator are investigated through experiment tests using LM13700 commercially available OTA.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Multiple-Input Universal Filter and Quadrature Oscillator Using Multiple-Input Operational Transconductance Amplifiers

et al. 2021

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“…The condition and the frequency of oscillation of the shadow oscillator can be controlled electronically and independently. It is worth noting here that the MI-OTA has been used for many interesting applications in the literature [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ] and that the low transconductance offered by the proposed MI-OTA is also desired for biosignals processing in order to achieve a very large time constant of the G m –C filter; otherwise, a large chip area will be occupied by the integrated capacitor [ 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

0.5-V Nano-Power Shadow Sinusoidal Oscillator Using Bulk-Driven Multiple-Input Operational Transconductance Amplifier

Khateb

Kumngern

Kulej

et al. 2023

Sensors

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This paper presents a low-frequency shadow sinusoidal oscillator using a bulk-driven multiple-input operational transconductance amplifier (MI-OTA) with extremely low-voltage supply and nano-power consumption. The proposed oscillator is composed using two-input single-output biquad filter and amplifiers. The condition and the frequency of oscillation of the shadow oscillator can be controlled electronically and independently using amplifiers. The circuit is designed in Cadence program using 0.18 µm CMOS technology from TSMC. The voltage supply is 0.5 V and the power consumption of the oscillator is 54 nW. The total harmonic distortion (THD) of the output signals is around 0.3% for 202 Hz. The simulation results are in accordance with theory.

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“…The universal biquad filter can be used in areas such as in touchtone telephone tone decoder, FM stereo demodulation, and audio crossover network circuit [1][2][3]. The design of analog active filters employing the single-ended active function blocks has been continuously presented in the open literature [4][5][6][7][8]. However, the use of single-ended active devices to realize the analog filter limits the dynamic range.…”

Section: Introductionmentioning

confidence: 99%

0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs

et al. 2020

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The design of a low-power, low-voltage, fully-differential universal biquad filter is presented in this work, which is constructed from four multiple-input gate-driven operational transconductance amplifiers (MI-OTAs) along with one passive resistor and two passive capacitors. The scheme of presented biquad filter has three high-input impedance voltage nodes and single output voltage node. Five unity gain filtering functions, all-pass (AP), low-pass (LP), band-pass (BP), high-pass (HP) and band-stop (BS) responses, are obtained. The selection of output filtering responses is obtained without the need of component matching condition, inverting or double input voltage. With this feature, it can be easily controlled with digital programming. The quality factor (Q) and angular frequency ( 0) are electronically and independently tuned. Moreover, the adjustment of  0 and Q can be done without affecting the voltage gain. A workability of the design is confirmed via Cadence software and the Spectre simulator based on the 180 nm TSMC CMOS technology parameters. The proposed fully differential filter operates with 0.5 V supply voltage. The results verify that the proposed filter dissipates the total power of 53.3 nW. Additionally, the dynamic range (DR) of band-pass filtering function is 63 dB for 2% third intermodulation distortion (IMD). Also, the simulated RMS value of the band-pass filtering noise is 45 μV. INDEX TERMS MI-OTA, low-power low-voltage circuit, universal filter, Analog circuit, Electronic control

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Design of a new low power MISO multi-mode universal biquad OTA-C filter

Cited by 16 publications

References 38 publications

Multiple-Input Universal Filter and Quadrature Oscillator Using Multiple-Input Operational Transconductance Amplifiers

Multiple-Input Universal Filter and Quadrature Oscillator Using Multiple-Input Operational Transconductance Amplifiers

0.5-V Nano-Power Shadow Sinusoidal Oscillator Using Bulk-Driven Multiple-Input Operational Transconductance Amplifier

0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs

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