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Communication Dans Un Congrès Année : 2009

Automatic model refinement of GmC integrators for high-level simulation of continuous-time Sigma-Delta modulators

Résumé

A ΣΔ GmC integrator refinement flow is presented. The classically simplified GmC integrator small-signal model was upgraded to be extremely accurate by considering the complete transistor small-signal model. A circuit-level knowledge-based tool was used to execute the designer defined sizing procedure and to extract small signal parameters. By associating the symbolic transfer function to small-signal parameters, the flow, entirely implemented with C++, is able to compute poles and zeros to permit precise behavioral simulations. A 2nd order ΣΔ modulator was chosen to visualize performance degradations while the specifications were not achievable.

Dates et versions

hal-00627057 , version 1 (27-09-2011)

Identifiants

Citer

Michel Vasilevski, Hassan Aboushady, Marie-Minerve Louërat. Automatic model refinement of GmC integrators for high-level simulation of continuous-time Sigma-Delta modulators. ISCAS'09 - IEEE International Symposium on Circuits and Systems, May 2009, Taipei, Taiwan. pp.2769-2772, ⟨10.1109/ISCAS.2009.5118376⟩. ⟨hal-00627057⟩
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