The growing demand of mixed-signal integrated circuits encourages the research of Built- In Self-Test (BIST) techniques to achieve simpler and less expensive testing processes. High quality sinusoidal oscillators based on a Δ-Σ topology are an effective solution to perform the test of this kind of devices. Unfortunately, due to the in-loop 1-bit quantizer nonlinearity, several problems of stability have been observed. A stability analysis on the behavior of the oscillator based on a second order Δ-Σ modulator presented in [1] is described in this paper. In particular, it is shown that the oscillator is intrinsically unstable and its complete dynamics is very difficult to predict exactly. Finally, a possible stabilization strategy is proposed.

Stability analysis of oscillators based on a delta-sigma topology / Macii, D.; Carbone, P.; Petri, D.. - STAMPA. - (2002). (Intervento presentato al convegno 4th IMEKO TC4 Conference on Advanced A/D and D/A Conversion Techniques and Their Applications and the 7th Workshop on ADC Modelling and Testing 2002 tenutosi a Praga, Repubblica Ceca nel 26-28 giugno 2002).

Stability analysis of oscillators based on a delta-sigma topology

Macii D.;Carbone P.;Petri D.
2002-01-01

Abstract

The growing demand of mixed-signal integrated circuits encourages the research of Built- In Self-Test (BIST) techniques to achieve simpler and less expensive testing processes. High quality sinusoidal oscillators based on a Δ-Σ topology are an effective solution to perform the test of this kind of devices. Unfortunately, due to the in-loop 1-bit quantizer nonlinearity, several problems of stability have been observed. A stability analysis on the behavior of the oscillator based on a second order Δ-Σ modulator presented in [1] is described in this paper. In particular, it is shown that the oscillator is intrinsically unstable and its complete dynamics is very difficult to predict exactly. Finally, a possible stabilization strategy is proposed.
2002
4th IMEKO TC4 Conference on Advanced A/D and D/A Conversion Techniques and Their Applications and the 7th Workshop on ADC Modelling and Testing 2002
Prague, Czech Republic
IMEKO-International Measurement Federation Secretariat
Settore ING-INF/07 - Misure Elettriche e Elettroniche
Settore IMIS-01/B - Misure elettriche ed elettroniche
Macii, D.; Carbone, P.; Petri, D.
Stability analysis of oscillators based on a delta-sigma topology / Macii, D.; Carbone, P.; Petri, D.. - STAMPA. - (2002). (Intervento presentato al convegno 4th IMEKO TC4 Conference on Advanced A/D and D/A Conversion Techniques and Their Applications and the 7th Workshop on ADC Modelling and Testing 2002 tenutosi a Praga, Repubblica Ceca nel 26-28 giugno 2002).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/443158
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