Abstract This paper presents a comparative EMI susceptibility study of different integrated operational transconductance amplifier (OTA) topologies. We analyzed conventional well-known topologies based on the Miller OTA and folded cascode concepts with lower power consumption. The output dc voltage shifts induced by supply input common mode high frequency disturbances are presented. On top comp...

1. Abstract This paper presents the features of Instrumentation Amplifier for biomedical applications. This Instrumentation Amplifier is a device created from Operational Tran conductance Amplifier. It is designed to have input high impedance , output low impedance, low DC offset, low noise , high common mode rejection ratio and high power supply rejection ratio. The circuit has been integrated...

In this work, an ultra-low-voltage (ULV) technique to improve body-driven current mirrors is proposed. The proposed employed the performance of conventional differential-to-single-ended (D2S) converters which at these low voltages suffer from a common-mode rejection ratio (CMRR). addition, aims D2S also under large signal swing and with respect process, voltage temperature (PVT) variations, res...

This paper presents the design and Implementation of a novel CMOS Instrumentation Amplifier using capacitive neutralization feedback transconductance techniques for bioelectric signal enhancement. The proposed amplifier also implements indirect current feedback, operating at 3-volt supply. With compact footprint 0.062mm² on chip, achieves an impressive bandwidth 4.2MHz 85 dB CMRR. Implemented 0...

Low voltage op amps with complementary N–P input differential pairs are known to suffer from low common mode rejection ratio due to mismatch errors and the tail current switching between the N and P input stage. To understand the contribution of the systematic and the random common mode gains to the overall common mode rejection ratio (CMRR) we studied three op amp topologies, which use N–P com...

In this paper a novel common mode separation technique for implementing fully differential current buffers is introduced.  Using the proposed method two high CMRR (Common Mode Rejection Ratio) and high PSRR (Power Supply Rejection Ratio) fully differential current buffers in BIPOLAR and CMOS technologies are implemented.   Simulation results by HSPICE using 0.18μm TSMC process for CMOS based st...

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...

In this paper, a low noise high gain CMOS amplifier for minute nerve signals is presented. By using a mixture of weakand strong inversion transistors, optimal noise suppression in the amplifier is achieved. A continuous-time offsetcompensation technique is utilized in order to minimize impact on the amplifier input nodes. The method for signal recovery from noisy nerve signals is presented. A p...