Significant departures between predicted behaviour and actual performance are observed in opamp based structures containing the so-called MOS Resistive Circuit. In this paper we demonstrate that the usual description of this cell by a simple model of two tunable resistors is not adequate enough to properly describe the MRC operation. A more complete, still simple model is proposed and shown to ...

This application note defines the ac specifications of voltage feedback operational amplifiers (Op Amps). Directly following these definitions, related amplifier circuits are given where the ramifications of the particular specifications causes less than optimum circuit performance. This is then followed with appropriate circuit solutions.The companion application note for DC specifications alo...

DESIGN AND IMPLEMENTATION OF A FOUR TERMINAL FLOATING AMPLIFIER AND ITS APPLICATION IN ANALOG ELECTRONICS By José A. García Rivera The field of analog electronics has developed and matured for the past two decades. Within this field, design of analog amplifiers has received attention due to changes in technology. Amplifier circuits, considered analog devices, are found anywhere in many house el...

This paper proposes a methodology for the parametric design of operational transconductance amplifiers. In the proposed methodology, amplifier sizing is performed in two stages: an equation-based design scheme performs an approximate design, followed by optimization of the design results with genetic algorithms. The feasibility of this method was investigated with extensive simulation. For demo...

The paper describes hardware implementation of control system designs using the Quanser DC Motor Control Trainer (DCMCT). Toward this goal, students are guided to design control systems and verify their designs via simulation environments like MATLAB/Simulink. Then, they realize the control system designs by building op-amp circuits and validate the designs via the Quanser DC Motor Control Trai...

A novel CMOS monolithic analog multiplier capable of operating in two quadrants is described in this thesis. The multiplier incorporates a voltage-controlled variable linear resistor comprised of two FET transistors in the feedback network of an operational amplifier. This novel approach to implementing an analog multiplier results in good linearity and wide input dynamic range when compared to...

An operational amplifier is one of the key functional blocks and is widely used in analog and mixed-signal circuits. For lowpower consumption, many techniques such as class AB and slew-rate enhancement have been proposed. Although phase compensation is related to power consumption, it has not been clearly discussed from the viewpoint of the power consumption. In this paper, the conventional and...