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|Title:||Multibit delta-sigma modulator with noise-shaping dynamic element matching|
Mixed analog-digital integrated circuits
|Source:||Chen, A.J., Xu, Y.P. (2009). Multibit delta-sigma modulator with noise-shaping dynamic element matching. IEEE Transactions on Circuits and Systems I: Regular Papers 56 (6) : 1125-1133. ScholarBank@NUS Repository. https://doi.org/10.1109/TCSI.2008.2008485|
|Abstract:||This paper describes a fifth-order multibit low-pass delta-sigma modulator employing a proposed noise-shaping dynamic element matching (NS-DEM) technique to remove DAC nonlinearity error. Unlike most existing DEMs that trade SNR for SFDR, the proposed technique improves both SFDR and SNR. The noise shaping is incorporated in the first integrator of the loop filter without any additional analog circuitry. The fabricated modulator chip achieves 94-dB SFDR and 78-dB DR in 2.2-MHz BW and meets the ADSL2+ specifications. © 2009 IEEE.|
|Source Title:||IEEE Transactions on Circuits and Systems I: Regular Papers|
|Appears in Collections:||Staff Publications|
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