Digital Suppression of EMI-Induced Errors in a Baseband Acquisition Front-End including Off-the-Shelf, EMI-Sensitive Operational Amplifiers

Electronics

Paolo Crovetti¹  Francesco Musolino¹ 

[1] Department of Electronics and Telecommunications (DET), Politecnico di Torino, 10129 Torino, Italy;

关键词: electromagnetic interference (EMI);    electromagnetic compatibility (EMC);    operational amplifier (Opamp);    analog integrated circuits;    acquisition front-end (AFE);    digital processing;   

DOI  :  10.3390/electronics10172096

来源: DOAJ

【 摘 要 】

In this paper, the susceptibility to Electromagnetic Interference (EMI) of an analog signal acquisition front-end (AFE) due to EMI distortion in opamp-based pre-conditioning amplifiers is addressed. More specifically, the possibility to correct EMI-induced errors in the digital domain by post-processing the acquired digital waveforms is discussed and experimentally demonstrated for the first time with reference to an AFE based on EMI-sensitive, off-the-shelf operational amplifiers mounted on a specific EMI test PCB. Extensive experimental characterization in the presence of continuous wave and amplitude modulated EMI reveals the superior immunity to EMI of the proposed AFE and the robustness of the approach.

【 授权许可】

Unknown