Continuous-Time Delta-Sigma Modulator based on High-Speed Low-Resolution A/D Converter

This paper presents an advanced design methodology using a combination of behavioral models and transistor level models. This methodology is very interesting for complex mixed-signal IC design, improving the design flexibility and reducing the simulation time. In order to validate the proposed methodology, a continuous-time delta-sigma modulator based on a high-speed low-resolution analog-to-digital converter is modeled. This modulator samples at high-IF signals, performing the direct conversion in the modern RF front-end receivers.