This paper presents the design and performance comparison of a two stage operational amplifier topology using CMOS and BiCMOS technology. This conventional op amp circuit was designed by using RF model of BSIM3V3 in 0.6 μm CMOS technology and 0.35 μm BiCMOS technology. Both the op amp circuits were designed and simulated, analyzed and performance parameters are compared. The performance paramet...

The design of a new single stage class AB operational amplifier is presented. Amplifier incorporates an input differential pair with minimum current selector and common-mode feedback to control the tail current. It shows small-signal behavior of a simple OTA, while class AB feedback provides high slew rate when large input signals are applied. Prototype circuit was manufactured in 2pm analog CM...

This paper describes an instrumentation amplifier (INA) with three operational amplifier (op amp) topology, for biomedical applications. To achieve low offset new circuit technique is achieved by adding NMOS transistor and two phase clock scheme with a frequency of 20 KHz. With the unity gain bandwidth of 92 KHz , the open loop gain of this instrumentation amplifier is found to be 50 dB and hav...

A new approach to the design of an instrumentation amplifier using only 2 CMOS current-controlled conveyors and an active resistor is introduced. The new approach, which has no passive components, offers a wide bandwidth and a high common-mode rejection ratio (CMRR). Electronically controllable gain by voltage and current is also obtained by this new circuit. The circuit is simulated using the ...

In this paper we design the low-power CMOS limiting amplifier using negative impedance, the purpose of using negative impedance is to increase the gain of the amplifier. low-power operations are also done using all the active elements. The LA was implemented in a standard CMOS 0.18um technology. This limiting amplifier is designed for the instrumentation(bio-medical) application. Gain of the am...

In this paper the current mode approach called “Current Conveyor (CCII+)” has been incorporated to design and simulate the circuit for producing two amplitude matched anti-phase sine waveforms which are frequently used in various communication and instrumentation systems. PSpice simulation has been used to depict the output waveforms. The power supply used is ±2.5 V which can be easily incorpor...

In low voltage low power CMOS systems both the high input offset and noise voltages of MOSFETs and also the moderate gain of op amps limit the accuracy of analog circuits. In this paper we present a new high-accuracy instrumentation amplifier; this circuit topology is the first ever reported "non-autozero" instrumentation amplifier which allows to compensate, beside the input offset and noise v...

M. J. Nissi, L. J. Lehto, C. A. Corum, D. Idiyatullin, O. H. Gröhn, and M. T. Nieminen Department of Physics, University of Kuopio, Kuopio, Finland, Department of Clinical Radiology, Kuopio University Hospital, Kuopio, Finland, Department of Biotechnology and Molecular Medicine, University of Kuopio, Kuopio, Finland, CMRR, University of Minnesota, Minneapolis, MN, United States, Department of N...

1. School of Computer Science and Technology, Xidian University, Xi’an710071, Shannxi, PR China 2. Institute of Science and Technology for Brain Inspired Intelligence, Fudan University, Shanghai, PR China 3. Department of Computer Science, University of Warwick, Coventry CV4 7AL, UK 4. Oxford Centre for Computational Neuroscience, Oxford UK 5. Center for Magnetic Resonance Research (CMRR), Univ...