Return to-zero feedback insertion in a continuous time Delta-Sigma modulator for excess loop delay compensation
نویسندگان
چکیده
منابع مشابه
Digital excess loop delay compensation technique with embedded truncator for continuous-time delta–sigma modulators
ELECT A novel implementation is proposed to relax the specifications of the internal feedback path for a continuous-time delta–sigma modulator. A truncator is embedded into the digital excess loop delay (ELD) compensation path. Thermometer-coded truncation is achieved by reordering the reference voltages of the internal quantiser. This requires only a small amount of extra digital circuitry com...
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Continuous-time ∆Σ modulators are able to operate at higher frequencies than their discrete-time counterparts. However, they suffer more severely from non-idealities such as clock jitter and excess loop delay. The effects of these two non-idealities are explained and a continuous-time to discrete-time conversion method is presented in order to aid in the analysis of these non-idealities. Two ci...
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This paper presents a detailed study of the clock jitter error in multi-bit continuous-time ΣΔ modulators with non-return-to-zero feedback waveform. It is demonstrated that jitterinduced noise power can be separated into two main components: one that depends on the modulator loop filter transfer function and the other dependent on input signal parameters, i.e. amplitude and frequency. The latte...
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ژورنال
عنوان ژورنال: IEICE Electronics Express
سال: 2004
ISSN: 1349-2543
DOI: 10.1587/elex.1.568