Results 191 to 200 of about 1,353,266 (239)
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Chopper-stabilized operational transconductance amplifiers
IEEE Transactions on Instrumentation and Measurement, 1993A technique for chopper-stabilizing commercial linearized operational transconductance amplifiers (OTAs) to remove output offset current errors is described. Design equations which illustrate performance tradeoffs as a function of component values are given. The results are verified experimentally using a common bipolar OTA. >
S.E. Nordquist +2 more
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Frequency compensation of MOS operational transconductance amplifiers
International Journal of Circuit Theory and Applications, 1991AbstractOperational transconductance amplifiers (OTAs) can be compensated by a capacitor placed in the differential‐to‐single‐ended (D/SE) conversion stage. the concept involved in shaping the magnitude and phase‐frequency response of OTAs is to realize a low‐frequency zero such that the effects of double poles prior to unity gain are not felt.
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A highly linear operational transconductance amplifier for large signal operations
1998 IEEE International Conference on Electronics, Circuits and Systems. Surfing the Waves of Science and Technology (Cat. No.98EX196), 2002Operational Transconductance Amplifiers (OTA's) with linear input-output characteristics have become a focus of interest for analogue continuous-time circuits such as filters. This paper introduces a new principle for a CMOS-OTA circuit with excellent linearity.
Jürgen Oehm, Klaus Schumacher
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OVERVIEW OF OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA)
2022An essential component of electronic systems is the operational transconductance amplifier (OTA). A transconductor's job is to turn an input voltage into an output current. The transconductance amplifier can be set up to either amplify or combine currents or voltages.
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Information capacity and power efficiency in operational transconductance amplifiers
2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512), 2004Noise limits information transmission in analog systems. Real analog systems possess intrinsic physical noise such as thermal noise and flicker noise and inevitably suffer degradation of information content. This loss in information can be reduced if the analog system operated at frequencies where noise is minimal. Using principles of low power circuit
Makeswaran Loganathan +2 more
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New Operational Transconductance Amplifiers using current boosting
2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS), 2012New techniques for Class-AB Operational Transconductance Amplifiers (OTAs) are presented. These new techniques are two topologies based on current boosting in class-AB stage which achieve considerable improvement of Slew Rate and Gain-Bandwidth while maintaining the same power consumption as the conventional design.
Mehdi Noormohammadi +2 more
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CMRR frequency response of CMOS operational transconductance amplifiers
IEEE Transactions on Instrumentation and Measurement, 2000In this paper an accurate and complete analysis of the CMRR for the most commonly used CMOS OTA's has been carried out. The analysis provides equations which can profitably be used in the design of high-accuracy integrated amplifiers to be employed in instrumentation circuits. The analysis shows that the CMRR of these circuits is highly affected by two
GIUSTOLISI, Gianluca +2 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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Active rc filters using an operational transconductance amplifier and an operational amplifier
International Journal of Circuit Theory and Applications, 1980AbstractAn operational transconductance amplifier (OTA) and an operational amplifier are being used to synthesize various second‐order cascadable active RC filters. Two of them are active R filters. The filters are studied both theoretically and experimentally and are found to have low sensitivity to variations in their component values.
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