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An EMC Robust Precise Voltage Reference for Automotive Applications
Krolák, David ; Husák, Miroslav (oponent) ; Psychalinos, Professor Costas (oponent) ; Horský, Pavel (vedoucí práce)
A crucial component of modern integrated circuits is the voltage reference that acts like the heart for analog blocks providing stable voltage. This doctoral thesis explores advanced methods to reduce electromagnetic interference (EMI) susceptibility of low-power voltage references for an automotive environment with a wide temperature range. The EMI susceptibility is an unwanted phenomenon that can cause electronic system malfunctions. Electromagnetic disturbances can easily couple to the circuit via a cable harness and a printed circuit board. This thesis provides a literature overview, research suggestions, and results that focus on hidden effects in the voltage reference core, such as the impact of parasitic capacitance from bipolar transistors' collectors to the substrate and the effects of a used operational amplifier. Recommendations for improving voltage reference EMI robustness are presented and implemented. To prove the validity of the suggested improvements, test chips with proposed voltage references using various technologies were fabricated and measured.

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