• 专利标题: TECHNIQUES FOR HIGH-SPEED EXCESS LOOP DELAY COMPENSATION IN SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTERS
  • 申请号: US17158913
    申请日: 2021-01-26
  • 公开(公告)号: US20220239314A1
    公开(公告)日: 2022-07-28
  • 发明人: Chenming ZHANGLucien Johannes BREEMSMuhammed BOLATKALE
  • 申请人: NXP B.V.
  • 申请人地址: NL Eindhoven
  • 专利权人: NXP B.V.
  • 当前专利权人: NXP B.V.
  • 当前专利权人地址: NL Eindhoven
  • 主分类号: H03M3/00
  • IPC分类号: H03M3/00
TECHNIQUES FOR HIGH-SPEED EXCESS LOOP DELAY COMPENSATION IN SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTERS
摘要:
The present disclosure relates generally to techniques for continuous-time sigma-delta analog-to-digital converter (ADC). The continuous-time sigma-delta ADC may include a feed-forward capacitor in parallel with a current-steering excess loop delay (ELD) digital-to-analog converter (DAC), and by creating a zero in a transfer function of a Gm cell, both an ELD feedback loop settling and a main feedback loop may be recovered. As a result, the performance and stability of the continuous-time sigma-delta ADC can be achieved. Additionally, a summation node in the continuous-time sigma-delta ADC may offer flexibility in the architecture design of the continuous-time sigma-delta ADC.
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