ASHOK AGARWAL,SACHIN RAI. Design of a CMOS Op-Amp and Second Order Sigma Delta Analog to Digital Converter Using 0.18 µ µµ µm CMOS Technology. International Journal of Research & Technology, [S. l.], v. 1, n. 1, p. 15–18, 2013. Disponível em: https://ijrt.org/j/article/view/6. Acesso em: 4 oct. 2025.