Application of PWC318 in Σ-Δ A/D Convertor

The paper introduced the construction and characteristics of Σ Δ A/D convertor, proposed a new idea of realizing Σ Δ A/D conversion by combining hardware and software. It also presented hardware and software design of Σ Δ A/D converting circuit with PWC318, integrator, comparator and 89C52.