Citation link:
Authors:
Ценов, Георги; Tsenov, Georgi; Терзиева, Снежана; Terzieva, Snejana; Якимов, Петър; Yakimov, Peter; Младенов, Валери; Mladenov, Valeri
Title:
Моделиране и реализация на сигма-делта модулатор от трети ред
Other Titles:
Modeling and implementatin of third order sigma-delta modulator
Date of Issue:
2007
Is Part of:
Proceedings of the Technical University – Sofia, 57(1), 2007, pp. 41-48
Publisher:
TU – Sofia
Type:
Article
Language:
eng
Abstract:
Sigma-Delta (∑∆) modulation has become more and more popular alternative for robust and inexpensive analog-to-digital (A/D) conversion for the past years. As a result of this, the converters based on 1-bit ∑∆ modulators are widely used in different applications. In this paper we present an experimental electronic realization of a third order Sigma-delta modulator. The general third order modulator is converted into decomposition of low order modulators, which interact through the quantizer function. The electronic circuit allows adjustment of the modulator’s parameters and thus, obtains desired limit cycles. It can be used for making measurements and for comparison between the simulated and measured results. Its electrical scheme is simulated with the use of PSpice and it is shown that there is a good coincidence between the simulated and the measured results.
Description:
Reviewer assoc. prof. Emil Manolov. - Formulas,schemes, diagr. - References, pp. 48
