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Fully Differential Operational Transconductance Amplifiers (OTAs)
2007An amplifier is often a fundamental building block of an analog circuit. Fully differential circuits are widely used due to their large available signal swing, and superior supply and substrate interference immunity. In this chapter we will develop the design of fully differential amplifiers, which will be primary building blocks for subsequent designs
Shouri Chatterjee +4 more
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Noise optimization in operational transconductance amplifier filters
IEEE International Symposium on Circuits and Systems, 2003The noise performances of a class of biquadratic time-continuous filters based on the use of operational transconductance amplifiers and capacitors (OTA-C filters) are investigated and compared in terms of the filter parameters and topologies. Both white and 1/f noise are included in modeling the noise characteristics of a real OTA, and expressions for
BRAMBILLA, ANGELO MAURIZIO +3 more
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Operational Transconductance Amplifier-C Filters
2003In this chapter, Active filters using only OTAs and capacitors are described. Cascade design of OTA-C filters needs high input impedance for each block, as well as first-order and second-order blocks. Various structures that can be used to implement these will be discussed in detail. The subject of ladder filter simulation using component simulation as
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Using operational transconductance amplifiers for Chua's circuit
2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering. TENCOM '02. Proceedings., 2003A new approach to Chua's circuit is developed in this paper. OTAs (Operational Transconductance Amplifiers) are used to synthesize it. Firstly, OTAs are utilized for grounded inductors and piecewise-linear resistors. Then, OTAs are also used for a new variable parameter of current type Chua's circuit.
null Tao Wang +2 more
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Current-controlled multivibrators with operational transconductance amplifiers
International Journal of Electronics, 1991Abstract A current-controlled multivibrator using operational transconductance amplifiers (OTAs) is proposed and the circuit operation is described. The frequency of oscillations ƒo is calculated (both bipolar and MOS OTAs are treated). The circuit allows operation with a low voltage power supply.
I. M. FILANOVSKY, I. G. FINVERS
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Operational Transconductance Amplifier Based Two-Stage Differential Charge Amplifiers
2010A novel approach to the design of high-performance operational-amplifier-based differential charge amplifiers is proposed. It is based on a two-stage topology: The first stage performs a differential measurement to single ended signal conversion, providing a common mode rejection that only depends on the matching between two resistors; the second stage
Dinesh. B. Bhoyar, Bharati Y. Masram
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Astable bridge multivibrator with operational transconductance amplifier
International Journal of Electronics, 1992Abstract A bridge multivibrator using operational transconductance amplifier (OTA) is proposed and the circuit operation is described. The oscillation period T is calculated (both bipolar and MOS OTA are treated). External voltage clamping is not required to obtain symmetrical oscillations with 50% duty cycle.
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Bessel‐like compensation of three‐stage operational transconductance amplifiers
International Journal of Circuit Theory and Applications, 2017AbstractIn this paper, we introduce a simple and well‐defined approach for the design of fast settling amplifiers suitable for switched‐capacitor circuits and characterized by low capacitive loads, in the order of few pico‐farad. In the specific, the design is based on a new Bessel‐like compensation that sets the phase of the closed‐loop amplifier to ...
Giustolisi, Gianluca, Palumbo, Gaetano
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ECG performance validation using operational transconductance amplifier with bias current
International Journal of System Assurance Engineering and Management, 2021V. Vijay +7 more
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ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357), 2003
Operational Transconductance Amplifiers (OTA's) with linear input-output characteristics have become the focus of attention as a fundamental building block for analogue time-continuous circuits. Especially they are used in filters and instrumentation amplifiers with high cutoff- or corner frequencies.
R. Wunderlich +3 more
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Operational Transconductance Amplifiers (OTA's) with linear input-output characteristics have become the focus of attention as a fundamental building block for analogue time-continuous circuits. Especially they are used in filters and instrumentation amplifiers with high cutoff- or corner frequencies.
R. Wunderlich +3 more
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