EMI Susceptibility Issue in Analog Front-End for Sensor Applications

The susceptibility to electromagnetic interferences of the analog circuits used in the sensor readout front-end is discussed. Analog circuits still play indeed a crucial role in sensor signal acquisition due to the analog nature of sensory signals. The effect of electromagnetic interferences has been simulated and measured in many commercial and integrated analog circuits; the main cause of the electromagnetic susceptibility is investigated and the guidelines to design high EMI immunity circuits are provided

A 0.01mm2, 0.4V-VDD, 4.5nW-Power DC-Coupled Digital Acquisition Front-End Based on Time-Multiplexed Digital Differential Amplification

A reconfigurable, high-impedance, DC-coupled low-frequency digital acquisition front-end (DAFE) suitable to operate under a power supply voltage ranging from 0.2 to IV down to 600 pW power is presented in this paper. Matching-indifferent DC accuracy over a rail-to-rail input range is uniquely achieved by the new time-multiplexed digital differential amplification technique at ultra-low area and without chopping and auto-zeroing. A 180 nm testchip of the proposed DAFE occupies 0.00945 mm 2 and draws 4.5 nW at a 0.4 V supply, has a 120 Hz gain-bandwidth product, with an in-band input noise of 11.3 µV r ms , a 137 µV input offset voltage standard deviation, 65.7dB CMRR, 63.8dB PSRR, and provides a 46.5dB-SFDR, 6.9 bit-ENOB digitized output at -12 dBFS

Increasing EMI Immunity in novel low-voltage CMOS OpAmps

1An easy solution to increase the immunity to Electromagnetic interferences in recent low-voltage CMOS amplifiers is presented. It is based on a simple modification of the input stage, which can be fabricated in standard CMOS technologies and does not require extra mask levels, such as triple well, nor external components. Analysis and results are provide for very large interferences, arising from the input pin.reservedmixedAnna RichelliRichelli, Ann

Current Research on Embedded DC/DC Converters

In several energy applications, DC/DC converters are one of the most important components [...

EMI Susceptibility Issue in Analog Front-End for Sensor Applications

The susceptibility to electromagnetic interferences of the analog circuits used in the sensor readout front-end is discussed. Analog circuits still play indeed a crucial role in sensor signal acquisition due to the analog nature of sensory signals. The effect of electromagnetic interferences has been simulated and measured in many commercial and integrated analog circuits; the main cause of the electromagnetic susceptibility is investigated and the guidelines to design high EMI immunity circuits are provided

A methodological approach to EMI resistant analog integrated circuit design

This paper describes the effect of EMI (electromagnetic interference) on analog integrated circuits, and introduces four design guidelines targeted at improving the susceptibility of analog integrated circuits to EMI. These guidelines are then applied to the practical design of operational amplifier topologies with a high degree of immunity to conductive EMI. © 2012 IEEE