Invention Grant
- Patent Title: Techniques for high-speed excess loop delay compensation in sigma-delta analog-to-digital converters
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Application No.: US17158913Application Date: 2021-01-26
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Publication No.: US11463101B2Publication Date: 2022-10-04
- Inventor: Chenming Zhang , Lucien Johannes Breems , Muhammed Bolatkale
- Applicant: NXP B.V.
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Main IPC: H03M3/00
- IPC: H03M3/00

Abstract:
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.
Public/Granted literature
- US20220239314A1 TECHNIQUES FOR HIGH-SPEED EXCESS LOOP DELAY COMPENSATION IN SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTERS Public/Granted day:2022-07-28
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