Multi-level second-order (Silva Steensgaard Structure) delta-sigma modulator Realized with (c)MATLAB (R2017b) From : Pavan, Shanthi, et al. Understanding Delta-Sigma Data Converters. Wiley, 2017. Chapter 3 : Alternative Second-Order Modulator Structures Page 80-81 Section 3.4.2 : The Silva Steensgaard Structure Figure : 3.16
Run do tb.do in modelsim
Also, cosimulation model in MATLAB R2017b