Title :
Noise Analysis in High-Pass ΔΣ Modulator
Author :
Nguyen, V.T. ; Desgreys, P. ; Loumeau, P. ; Naviner, J.-F.
Author_Institution :
Dept. of Commun. & Electron., GET/Telecom Paris
Abstract :
This paper presents an analysis of various noises in high-pass ΔΣ modulator. The effect of jitter and switch noise is the same in HP modulator than in conventional modulator. These noises can be considered as white noise and increase the in band noise floor degrading the performance of the high-pass ΔΣ modulator. However, unlike the effect of op-amp noise in the conventional modulator, the op-amp noise is amplified at the output of the high-pass ΔΣ modulator by a factor that depends on the parameters of the high-pass ΔΣ modulator. This factor is first determined by analysis using mainly the linear model of the high-pass ΔΣ modulator and then confirmed by behavioral simulation and measurement.
Keywords :
circuit noise; delta-sigma modulation; jitter; operational amplifiers; white noise; high-pass DeltaSigma modulator; in-band noise floor; jitter; noise analysis; op-amp noise; switch noise; white noise; CMOS technology; Feedback loop; Frequency; Instrumentation and measurement; Low pass filters; Low-frequency noise; Noise shaping; Operational amplifiers; Quantization; Switches; Noise Analysis; SC implementation; ¿¿ modulator;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328410
