A 101-dB SFDR 98.5-dB DR 20-kHz BW Continuous Time Incremental Δ∑ ADC with FIR DAC and Robust Reset Timing for Sensor Interfaces

Cheng En Wei, Cheng Wei Wang, Chen Hao Hung, Chi Han Wang, Chuan Tai Chou, Duan Sin Hung, Guan Wei Lu, Chia Hung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Incremental ΔΣ analog-to-digital converters are highly advantageous in sensor interface integrated circuits due to its ability to minimize latency and easily multiplex signals. This makes it a great choice for sensor interface applications. In this paper, a third-order continuous time incremental ADC is proposed, which incorporates circuit techniques such as chopping, FIR DAC and robust reset timing to achieve high resolution. The ADC is prototyped in 0.18 μm technology. This work can achieve a peak SNDR of 93.7dB, SFDR of 101dB with a 2.54 vpp input amplitude and a DR of 98.5dB, occupying an area of 0.197 mm2. This work consumes 342.8μW with 1.8V supply voltage and 20kHz bandwidth, resulting in a Schreier Figure of Merit (FoMs) of 176.1dB. It is highly suitable for sensor interface readout systems.

Original languageEnglish
Title of host publication2024 International VLSI Symposium on Technology, Systems and Applications, VLSI TSA 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350360349
DOIs
StatePublished - 2024
Event2024 International VLSI Symposium on Technology, Systems and Applications, VLSI TSA 2024 - Hsinchu, Taiwan
Duration: 22 Apr 202425 Apr 2024

Publication series

Name2024 International VLSI Symposium on Technology, Systems and Applications, VLSI TSA 2024 - Proceedings

Conference

Conference2024 International VLSI Symposium on Technology, Systems and Applications, VLSI TSA 2024
Country/TerritoryTaiwan
CityHsinchu
Period22/04/2425/04/24

Keywords

  • Analog-to-digital converter (ADC)
  • chopper stabilization
  • continuous time (CT)
  • finite impulse response (FIR)
  • incremental
  • sensor

Fingerprint

Dive into the research topics of 'A 101-dB SFDR 98.5-dB DR 20-kHz BW Continuous Time Incremental Δ∑ ADC with FIR DAC and Robust Reset Timing for Sensor Interfaces'. Together they form a unique fingerprint.

Cite this