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This paper deals with the robustness of low power chopped CMOS operational amplifiers (OpAMPs) to electromagnetic interferences (EMI) conducted at the device input stage. The main differences between chopped amplifiers and standard offset uncompensated ones are analyzed in terms of EMI susceptibility, achieving three main results. First, a new model is developed to show how chopping influences the...
This paper deals with the characterization of the immunity of integrated circuits (ICs) to conducted electromagnetic interferences (EMI). In particular, it focuses on how to optimize the direct power injection (DPI) test bench for highly reflective low voltage devices under test (DUTs). The enhancements concern the whole injection setup, from the EMI generation up to the test printed circuit board.
This paper deals with low offset operational amplifiers. It shows an innovative approach to design an operational amplifier (OpAMP) which combines two different techniques that make it able to handle both the technological and the radio frequency interference (RFI) induced offset.
This paper deals with the characterization of the immunity of integrated circuits (ICs) by means of their susceptibility to conducted radio frequency (RF) electromagnetic interferences (EMI). It describes and analyses a framework to perform such characterization at wafer level, highlighting the benefits that are reaped from it and the problems that can be faced during the test bench setup and the...
This paper deals with direct power injection (DPI) simulations and it focuses on the simulation framework and post processing strategies to be performed during the design phase of automotive integrated circuits (ICs). The aim of such susceptibility simulations is to assist a designer to predict the ICs susceptibility to radio frequency interferences (RFI) during the design phase of the IC. For this...
This paper deals with the susceptibility of analog integrated circuits to radio frequency interferences (RFI) and it concentrates on the effects induced by RFI on the operation of offset compensated chopped CMOS operational amplifiers. The first part of the work explains the causes of the additional output DC offset induced by input RF disturbances in chopped systems. Afterwards, the design of a chopped...
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