A CMOS realization of the current-feedback differential difference amplifier (CFDDA) is proposed. The CFDDA circuit is realized using a wide input range dependent load transconductor (DTA) with three independent input voltages and a rail to rail classAB voltage buffer. The CFDDA circuit is used to realize a MOS-C oscillator suitable for VLSI. PSpice simulation results for the CFDDA circuit and ...

Received Nov 4, 2016 Revised Jan 8, 2017 Accepted Feb 17, 2017 The design of a low power amplifier for recording EEG signals is presented. The low noise design techniques are used in this design to achieve low input referred noise that is near the theoretical limit of any amplifier using a differential pair as input stage. To record the neural spikes or local field potentials (LFP’s) the amplif...

In the literature, Improved Recycling Folded Cascode (IRFC) Operational Transconductance Amplifier (OTA) is proposed for enhancing the DC gain and the Unity Gain Bandwidth (UGB) of the Recycling Folded Cascode (RFC) OTA. In this paper, an enhanced IRFC (EIRFC) OTA which uses positive feedback at the cascode node is proposed for enhancing the differential mode (DM) gain without changing the unit...

This paper presents a novel CMOS differential voltage current conveyor based on a wide linear range transconductor with common mode detection. The differential voltage current conveyor exhibits a wide dynamic input range of ±0.9V. It is used to realize an instrumentation amplifier, a multiple input single output filter, and a single input multiple output universal filter. PSPICE simulations of ...

An analytical modelling approach for fully differential amplifiers is presented and validated through examples. Separation of the analysis into two steps coupled with linear superposition techniques leads to concise mathematical expressions. An added benefit of the two-step approach is that the usual symmetry assumptions are not needed. As a consequence, the results hold for arbitrary element v...

Abstract: In the paper, the folded-cascode low-noise operational amplifier (LNA) with constant-gm is proposed and analyzed. The channel-length split technique adopted to expand ratio of W/L of the differential pair transistor to improve the performance of LNA for the gain bandwidth product, noise and offset voltage. The channel-length split method is separated differential input transistor into...