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[会议论文]

Digital filter design of a high resolution audio sigma-delta adc

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Author:

Huang, Qifeng (Huang, Qifeng.) | Wan, Peiyuan (Wan, Peiyuan.) | Xie, Xuesong (Xie, Xuesong.) | Unfold

Indexed by:

EI Scopus

Abstract:

The digital filter design of a high resolution audio sigma-delta ADC is proposed in this paper. The digital system is composed of cascaded integrator comb(CIC) filter, compensation filter and halfband filter. The design of digital decimation filter bandwidth is 24KHz, the input sampling frequency is 12.3MHz, the pass band ripple coefficient is ±0.01dB, and the stopband gain decays 120dB. By optimizing the structure, coefficients and order of the digital filter, the power consumption and the area of the system are reduced effectively. The behavial simulation shows the signal to noise ratio of the digital filter SNR is 100.6dB, and the accuracy is 16bit. The Sigma-delta ADC is implemented in TSMC 0.35μm CMOS process. The post simulation shows the overall dynamic range of the sigma-delta ADC is 97.4dB. © 2018 IEEE.

Keyword:

Digital filters Analog to digital conversion Signal to noise ratio Comb filters

Author Community:

  • [ 1 ] [Huang, Qifeng]Department of Information, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Wan, Peiyuan]Department of Information, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Xie, Xuesong]Department of Information, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Wang, Chuankai]Department of Information, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Su, Limei]Department of Information, Beijing University of Technology, Beijing; 100124, China
  • [ 6 ] [Chen, Zhijie]Department of Information, Beijing University of Technology, Beijing; 100124, China

Reprint Author's Address:

  • [wan, peiyuan]department of information, beijing university of technology, beijing; 100124, china

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Source :

ISSN: 2163-5048

Year: 2018

Volume: 2018-November

Page: 208-211

Language: English

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 3

30 Days PV: 1

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