A compact low-power flash ADC using auto-zeroing with capacitor averaging

Ching Chung Lee, Chung Ming Yang, Tai-Haur Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper proposes efficient methods to reduce the cost and power consumption of flash analog-to-digital converters (ADCs). An auto-zeroing technique is incorporated with a low-complexity low-power capacitor averaging network for efficient offset cancellation and signal interpolation. Therefore, the cost and power consumption of flash ADCs can be efficiently reduced. A compact low-power 8-bit 500MS/s flash ADC with the above features is fabricated with 0.18μm CMOS process. The active area occupies 0.35mm2 and its measured power at 500MS/s is 160mW from a 1.8V supply. Measured signal-to-noise-plus-distortion ratio (SNDR) of the ADC is 40dB with 200MHz input frequency sampled at 500MS/s. The figure-of-merit (FOM) is 4.17pJ/conversion-step, which is the best compared to published 0.18μm 8-bit flash ADCs. Further, the power consumption and active area are the smallest compared with state-of-the-art 0.18μm 8-bit high-speed ADCs.

Original languageEnglish
Title of host publication2013 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2013
DOIs
Publication statusPublished - 2013 Dec 23
Event2013 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2013 - Hong Kong, Hong Kong
Duration: 2013 Jun 32013 Jun 5

Publication series

Name2013 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2013

Other

Other2013 IEEE International Conference of Electron Devices and Solid-State Circuits, EDSSC 2013
Country/TerritoryHong Kong
CityHong Kong
Period13-06-0313-06-05

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'A compact low-power flash ADC using auto-zeroing with capacitor averaging'. Together they form a unique fingerprint.

Cite this