Nth order current mode universal filter using MOCCCIIs

Kumar, Ashok; Paul, Sajal K.

doi:10.1007/s10470-018-1127-3

Cited by 11 publications

(1 citation statement)

References 29 publications

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“…There are many universal filters available in the open literature, for example, see [5][6][7][8][9][10][11][12][13][14]. Considering input and output signals, these universal filters can be classified as four-mode operations as follows: voltage-mode (VM) filter when both input and output signals are in voltage form [5,6]; current-mode (CM) filter when both input and output signals are in current form [7,8]; transadmittance-mode (TAM) filter when the input signal is in voltage form while the output signal is in current form [9][10][11], and finally transimpedance-mode (TIM) filter when the input signal is in current form while the output signal is in voltage form [12][13][14]. It should be noted that the universal filters in [12][13][14] offer only a single-mode filter.…”

Section: Introductionmentioning

confidence: 99%

1.2 V Differential Difference Transconductance Amplifier and Its Application in Mixed-Mode Universal Filter

Kumngern

Suksaibul

Khateb

et al. 2022

Sensors

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This paper presents a new mixed-mode universal filter based on a differential difference transconductance amplifier (DDTA). Unlike the conventional transconductance amplifier (TA), this DDTA has both advantages of the TA and the differential difference amplifier (DDA). The proposed filter can offer four-mode operations of second-order transfer functions into a single topology, namely, voltage-mode (VM), current-mode (CM), transadmittance-mode (TAM), and transimpedance-mode (TIM) transfer functions. Each operation mode offers five standard filtering responses; therefore, at least twenty filtering transfer functions can be obtained. For the filtering transfer functions, the matching conditions for the input and passive component are absent. The natural frequency and the quality factor can be set orthogonally and electronically controlled. The performance of the proposed topology was evaluated by PSPICE simulator using the 0.18 µm CMOS technology from the Taiwan Semiconductor Manufacturing Company (TSMC). The voltage supply was 1.2 V and the power dissipation of the DDTA was 66 µW. The workability of the filter was confirmed through experimental test by DDTA-based LM13600 discrete-component integrated circuits.

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