2+2 MASH incremental ADC

  • Youngho JungEmail author
  • Gabor C. Temes


In this paper, 2+2 multi-stage noise shaping incremental ΔΣ ADC for wideband and high accuracy application is described and analyzed. The modulator introduced inter-stage gain to reduce the quantization noise without adding any hardware. Also, a gain scaling technique was used to decrease the power consumption by reducing the integrators’ output swing. A proof-of-concept prototype was fabricated with 0.18 μm 2P4M CMOS process. It achieved a 94.2 dB dynamic range and 74.8 dB SNDR in the 1.25 MHz signal band. The total power consumption is 67.1 mW with dual power supplies (analog 3.3 V, digital 1.8 V).


MASH Incremental ΔΣ ADC Inter-stage gain Quantization noise Gain scaling technique 



This research was supported by the Daegu University Research Grant, 20180396.


  1. 1.
    Nam, K., Lee, S. M., Su, D. K., & Wooley, B. A. (2005). A low-voltage low power sigma-delta modulator for broadband analog-to-digital converter. IEEE Journal of Solid-State Circuits, 40(9), 1855–1864.CrossRefGoogle Scholar
  2. 2.
    Schreier, R., & Temes, G. C. (2005). Understanding of delta-sigma data converters. New York: Wiley.Google Scholar
  3. 3.
    Agah, A., et al. (2010). A high-resolution low-power ΔΣ ADC with extended range for biosensor arrays. IEEE Journal of Solid-State Circuits., 45(6), 1099–1110.CrossRefGoogle Scholar
  4. 4.
    Silva, J., Moon, U., Steensgaard, J., & Temes, G. C. (2001). Wideband low-distortion ΔΣ ADC topology. Electronics Letters, 37(12), 737–738.CrossRefGoogle Scholar
  5. 5.
    Dessouky, M., & Kaiser, A. (2001). Very low-voltage digital-audio ΔΣ modulator with 88-dB dynamic range using local switch bootstrapping. IEEE Journal of Solid-State Circuits, 36(3), 349–355.CrossRefGoogle Scholar
  6. 6.
    Baird, R. T., & Fiez, T. S. (1995). Linearity enhancement of multibit ΔΣ A/D and D/A converters using data weighted averaging. IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 42, 753–762.CrossRefGoogle Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Electronics and Electrical EngineeringDaegu UniversityGyeongsanSouth Korea
  2. 2.School of EECSOregon State UniversityCorvallisUSA

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