A Novel Resistive Capacitive Feedback Trans-impedance Amplifier Optimization Using IPSO Algorithm

a novel resistive capacitive feedback trans-impedance amplifier optimization using ipso algorithm

a novel low noise trans-impedance amplifier is proposed using low cost 0.18 µm cmos technology. a resistive-capacitive feedback is used to extend the bandwidth of the amplifier. as the structure is inductor less, it is suitable for low cost integrated optical interconnects. in this paper improved particle swarm optimization have applied to determine optimal trans-resistance and noise of propose...

A Novel Smart Resistive - Capacitive Position Sensor

A novel smart resistive-capacitive angular position sensor is presented. The main advantages of this low-cost system are its simplicity, high stability and high reliability. A very hear oscillator is used in the processing circuit to convert the position quantity to a period-modulated signal which can directly be read out by a microcontroller. The system does not need an A/D converter. The nonl...

Improved Circuits with Capacitive Feedback for Readout Resistive Sensor Arrays

One of the most suitable ways of distributing a resistive sensor array for reading is an array with M rows and N columns. This allows reduced wiring and a certain degree of parallelism in the implementation, although it also introduces crosstalk effects. Several types of circuits can carry out the analogue-digital conversion of this type of sensors. This article focuses on the use of operationa...

High gain two-stage amplifier with positive capacitive feedback compensation

A novel topology for a high gain two-stage amplifier is proposed. The proposed circuit is designed in a way that the non-dominant pole is at output of the first stage. A positive capacitive feedback (PCF) around the second stage introduces a left half plane (LHP) zero which cancels the phase shift introduced by the non-dominant pole, considerably. The dominant pole is at the output node which m...

A Low Input Impedance MRI Preamplifier Using a Purely Capacitive Feedback Network

R. Oppelt, M. Vester Corporate Technology, Siemens AG, Erlangen, Germany, Medical Solutions, Siemens AG, Erlangen, Germany Introduction: MRI preamplifiers need to meet a number of technical requirements that are not easily to be achieved simultaneously. Major challenges are a low noise figure (e.g. <= 0.5 dB), a stable gain and a high dynamic range. In addition, the small signal input impedance...

Adaptively Filtering Trans-impedance Amplifier for Rf Current Passive Mixers