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A 40 MHz-BW 12-bit continuous-time a dagger I pound modulator with digital calibration and 84.2 dB-SFDR in 90 nm CMOS

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Abstract
A 4th-order 40 MHz-BW 12-bit continuous-time delta-sigma modulator with digital calibration is presented. A cost-efficient current-shaping technique for the SC DAC is proposed to relax the OTA slewing requirement. The DAC static and dynamic mismatches are eliminated by a look-up table based digital calibration. With a 1.2 V power supply and a 960 MHz clock, 73.6 dB peak SNR and 76.3 dB DR are measured for a 40 MHz bandwidth. After calibration, the modulator achieves an excellent SFDR of 84.2 dB and a 72.9 dB peak SNDR, with IM3 better than 85 dB. The modulator consumes 69.6 mW power, and occupies 0.28 mm(2) area in 90 nm CMOS.
Keywords
Shaped SC DAC, LUT-based Calibration, Doublet, CT DSM, DAC, SIGMA-DELTA MODULATOR, BAND, SIGNAL BANDWIDTH, DYNAMIC-RANGE, QUANTIZER, ERRORS, ADC

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MLA
Xing, Xinpeng, Maarten De Bock, Pieter Rombouts, et al. “A 40 MHz-BW 12-bit Continuous-time a Dagger I Pound Modulator with Digital Calibration and 84.2 dB-SFDR in 90 Nm CMOS.” ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING 84.1 (2015): 137–148. Print.
APA
Xing, X., De Bock, M., Rombouts, P., & Gielen, G. (2015). A 40 MHz-BW 12-bit continuous-time a dagger I pound modulator with digital calibration and 84.2 dB-SFDR in 90 nm CMOS. ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 84(1), 137–148.
Chicago author-date
Xing, Xinpeng, Maarten De Bock, Pieter Rombouts, and Georges Gielen. 2015. “A 40 MHz-BW 12-bit Continuous-time a Dagger I Pound Modulator with Digital Calibration and 84.2 dB-SFDR in 90 Nm CMOS.” Analog Integrated Circuits and Signal Processing 84 (1): 137–148.
Chicago author-date (all authors)
Xing, Xinpeng, Maarten De Bock, Pieter Rombouts, and Georges Gielen. 2015. “A 40 MHz-BW 12-bit Continuous-time a Dagger I Pound Modulator with Digital Calibration and 84.2 dB-SFDR in 90 Nm CMOS.” Analog Integrated Circuits and Signal Processing 84 (1): 137–148.
Vancouver
1.
Xing X, De Bock M, Rombouts P, Gielen G. A 40 MHz-BW 12-bit continuous-time a dagger I pound modulator with digital calibration and 84.2 dB-SFDR in 90 nm CMOS. ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING. Springer Verlag; 2015;84(1):137–48.
IEEE
[1]
X. Xing, M. De Bock, P. Rombouts, and G. Gielen, “A 40 MHz-BW 12-bit continuous-time a dagger I pound modulator with digital calibration and 84.2 dB-SFDR in 90 nm CMOS,” ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, vol. 84, no. 1, pp. 137–148, 2015.
@article{6871487,
  abstract     = {A 4th-order 40 MHz-BW 12-bit continuous-time delta-sigma modulator with digital calibration is presented. A cost-efficient current-shaping technique for the SC DAC is proposed to relax the OTA slewing requirement. The DAC static and dynamic mismatches are eliminated by a look-up table based digital calibration. With a 1.2 V power supply and a 960 MHz clock, 73.6 dB peak SNR and 76.3 dB DR are measured for a 40 MHz bandwidth. After calibration, the modulator achieves an excellent SFDR of 84.2 dB and a 72.9 dB peak SNDR, with IM3 better than 85 dB. The modulator consumes 69.6 mW power, and occupies 0.28 mm(2) area in 90 nm CMOS.},
  author       = {Xing, Xinpeng and De Bock, Maarten and Rombouts, Pieter and Gielen, Georges},
  issn         = {0925-1030},
  journal      = {ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING},
  keywords     = {Shaped SC DAC,LUT-based Calibration,Doublet,CT DSM,DAC,SIGMA-DELTA MODULATOR,BAND,SIGNAL BANDWIDTH,DYNAMIC-RANGE,QUANTIZER,ERRORS,ADC},
  language     = {eng},
  number       = {1},
  pages        = {137--148},
  publisher    = {Springer Verlag},
  title        = {A 40 MHz-BW 12-bit continuous-time a dagger I pound modulator with digital calibration and 84.2 dB-SFDR in 90 nm CMOS},
  url          = {http://dx.doi.org/10.1007/s10470-015-0561-8},
  volume       = {84},
  year         = {2015},
}

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