TY - JOUR
T1 - Practical analysis of clock jitter reduction techniques under power supply noise for continuous-time delta-sigma modulators
AU - Tang, Hua
PY - 2016/11/1
Y1 - 2016/11/1
N2 - Lowpass continuous-time Delta-Sigma modulators are very sensitive to clock jitter effects and various techniques have been proposed to cope with them in the past years. While three major techniques, switched-capacitor-resistor, switched-shaped-current and fixed-width pulse, are very effective to reduced clock jitter effects in theory, intrinsic device noise and external power supply noise may still limit their effectiveness in practice. In this paper, we perform detailed noise analysis of the three techniques to study their limits under external power supply noise as it is typically dominant and also to make a quantitative and practical comparison. It is found that the fixed-width pulse feedback technique may have a favorable edge among them for high frequency modulator designs, whereas switched-capacitor-resistor and switched-shaped-current techniques are more preferable in low to medium frequency modulator designs.
AB - Lowpass continuous-time Delta-Sigma modulators are very sensitive to clock jitter effects and various techniques have been proposed to cope with them in the past years. While three major techniques, switched-capacitor-resistor, switched-shaped-current and fixed-width pulse, are very effective to reduced clock jitter effects in theory, intrinsic device noise and external power supply noise may still limit their effectiveness in practice. In this paper, we perform detailed noise analysis of the three techniques to study their limits under external power supply noise as it is typically dominant and also to make a quantitative and practical comparison. It is found that the fixed-width pulse feedback technique may have a favorable edge among them for high frequency modulator designs, whereas switched-capacitor-resistor and switched-shaped-current techniques are more preferable in low to medium frequency modulator designs.
KW - Clock jitter effects
KW - Continuous-time
KW - Delta-sigma modulators
KW - Lowpass
KW - Noise analysis
KW - Power supply noise
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U2 - 10.1007/s10470-016-0846-6
DO - 10.1007/s10470-016-0846-6
M3 - Article
AN - SCOPUS:84984781485
SN - 0925-1030
VL - 89
SP - 373
EP - 381
JO - Analog Integrated Circuits and Signal Processing
JF - Analog Integrated Circuits and Signal Processing
IS - 2
ER -