JSTS:Journal of Semiconductor Technology and Science

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Low-power High-resolution Band-pass Sigma-delta ADC for Accelerometer Applications

  • Cao, Tianlin (Institute of Microelectronics, Zhejiang University) ;
  • Han, Yan (Institute of Microelectronics, Zhejiang University) ;
  • Zhang, Shifeng (Institute of Microelectronics, Zhejiang University) ;
  • Cheung, Ray C.C. (Department of Electronic Engineering, Chinese University of Hong Kong) ;
  • Chen, Yaya (Institute of Microelectronics, Zhejiang University)
  • Received : 2016.10.12
  • Accepted : 2017.05.12
  • Published : 2017.06.30
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Abstract

This paper presents a low-power high-resolution band-pass ${\Sigma}{\Delta}$ ADC for accelerometer applications. The proposed band-pass ${\Sigma}{\Delta}$ ADC consists of a high-performance 6-th order feed-forward ${\Sigma}{\Delta}$ modulator with 1-bit quantization and a low-power, area-efficient digital filter. The ADC is fabricated in 180 nm 1P6M mixed-signal CMOS process with a die area of $5mm^2$. This high-resolution ADC got 90 dB peak signal to noise plus distortion ratio (SNDR) and 96 dB dynamic range (DR) over 4 kHz bandwidth, while the intermediate frequency (IF) is shifting from 100 KHz to 200 KHz. The power dissipation of the chip is 5.6 mW under 1.8 V (digital)/3.3 V (analog) power supply.

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References

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