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A Method for the Schmitt Trigger Propagation Delay Compensation in Asynchronous Sigma-Delta Modulator (CROSBI ID 183235)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Matić, Tomislav ; Švedek, Tomislav ; Herceg, Marijan A Method for the Schmitt Trigger Propagation Delay Compensation in Asynchronous Sigma-Delta Modulator // IEEE transactions on circuits and systems. II, Express briefs, 59 (2012), 7; 404-408. doi: 10.1109/TCSII.2012.2198981

Podaci o odgovornosti

Matić, Tomislav ; Švedek, Tomislav ; Herceg, Marijan

engleski

A Method for the Schmitt Trigger Propagation Delay Compensation in Asynchronous Sigma-Delta Modulator

This paper provides the mathematical analysis of the Schmitt trigger propagation delay influence on the Asynchronous Sigma-Delta Modulator (ASDM) output signal frequency spectrum. Beside the propagation delay, the Schmitt trigger slew rate impact has also been presented. Based on the mathematical analysis, a method for the Schmitt trigger propagation delay compensation has been proposed. The method is implemented by introducing hysteresis level amplitude modulation. The first-order ASDM simulation and measurement models have been proposed for the propagation delay influence to the ASDM output signal frequency and for the compensation method verification. The measurement and simulation results for the proposed method confirm the ASDM output frequency spectrum improvement.

Asynchronous Sigma-Delta Modulator; Schmitt trigger; hysteresis voltage; propagation delay

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Podaci o izdanju

59 (7)

2012.

404-408

objavljeno

1549-7747

10.1109/TCSII.2012.2198981

Povezanost rada

Elektrotehnika, Računarstvo

Poveznice
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