A spur-free MASH DDSM with high-order filtered dither
Abstract
A novel dithered multistage noise shaping (MASH) digital delta-sigma modulator (DDSM) that produces a spur-free output spectrum is presented. The order of the least significant bit (LSB) dither shaping can be increased to that of the modulator, without producing spurious tones. Theoretical results prove that the quantization noise is asymptotically white and uncorrelated with the input; this is corroborated by behavioral simulations. © 2011 IEEE.
Publication Title
IEEE Transactions on Circuits and Systems II: Express Briefs
Recommended Citation
Fitzgibbon, B., Pamarti, S., & Kennedy, M. (2011). A spur-free MASH DDSM with high-order filtered dither. IEEE Transactions on Circuits and Systems II: Express Briefs, 58 (9), 585-589. https://doi.org/10.1109/TCSII.2011.2161172
