Results 221 to 230 of about 31,563 (270)

Using operational transconductance amplifiers for Chua's circuit

2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering. TENCOM '02. Proceedings., 2003
A 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, null Jianjun Hou, null Yuhui Zhang   +2 more
openaire   +1 more source

Current-controlled multivibrators with operational transconductance amplifiers

International Journal of Electronics, 1991
Abstract 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
openaire   +1 more source

Operational Transconductance Amplifier Based Two-Stage Differential Charge Amplifiers

2010
A 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
openaire   +1 more source

Astable bridge multivibrator with operational transconductance amplifier

International Journal of Electronics, 1992
Abstract 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.
openaire   +1 more source

A linear operational transconductance amplifier with automatic offset cancellation and transconductance calibration

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, J. Oehm, A. Dollberg, K. Schumacher   +3 more
openaire   +1 more source

Floating operational transconductance amplifier based grounded impedance

IEE Proceedings - Circuits, Devices and Systems, 2003
A technique to reproduce, in floating form, a given operational transconductance amplifier (OTA) based grounded impedance (GI) is presented. Unlike the back-to-back technique, the technique presented has the feature that the required additional matching constraints (i.e.
openaire   +1 more source

Frequency compensation of MOS operational transconductance amplifiers

International Journal of Circuit Theory and Applications, 1991
AbstractOperational 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.
openaire   +1 more source

Active rc filters using an operational transconductance amplifier and an operational amplifier

International Journal of Circuit Theory and Applications, 1980
AbstractAn 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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Operational Transconductance Amplifiers

1999
Chi-Hung Lin, Mohammed Ismail, R Wassenaar   +2 more
openaire   +2 more sources

Operational Transconductance Amplifiers For Gigahertz Applications

2008
A novel CMOS operational transconductance amplifier (OTA) is proposed and demonstrated in this thesis. Due to its feedforward-regulated cascode topology, it breaks the previous OTA frequency limit of several hundred MHz and operates at frequencies up to 10 GHz with a large transconductance.
openaire   +1 more source