A second-order sigma-delta (Sigma Delta) modulator for high-temperature (HT) applications is presented. The modulator exploits the advantages of the fully-depleted (FD) SOI CMOS technology as well as a dedicated design procedure in order to extend the temperature range of classical architectures up to 300 degrees C, thereby avoiding compensation circuits which add to the power dissipation.
Viviani, A., Jespers, P., & Flandre, D. (1999). High-temperature sigma-delta modulator in thin-film fully-depleted SOI technology. Electronics Letters, 35(9), 749-751. https://doi.org/10.1049/el:19990513 (Original work published 1999)