By Topic

A novel flash analog-to-digital converter

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Chia-Nan Yeh ; Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan ; Yen-Tai Lai

this paper a new ADC architecture of flash type is proposed. This proposed N-bit flash ADC replaces the (2N-1)-to- N encoder with two (2N/2 -1)-to-(N/2) encoders to accomplish the encoding of the least significant bits and the most significant bits respectively. A 6-bit ADC of this architecture is implemented. The physical circuit is more compact than the existing ones. Power, processing time and area cost are all minimized. In addition, a new encoding algorithm is proposed to enhance the bubble error tolerance of an ADC. The encoders that have the capability of removing the bubble errors always suffer the problem of long latency. It becomes a bottleneck in the design of high speed flash ADC nowadays. In the proposed 6-bit ADC, the trade-off between bubble tolerance and latency is optimized by applying the proposed encoding algorithm into the encoder circuit design. Delay of 3 gate-levels or fewer is required for processing the encoding and the maximum error induced bubble is 7 LSB. Simulation results demonstrate the benefits introduced above. This new flash ADC offers an excellent choice for modern high speed ADC application.

Published in:

2008 IEEE International Symposium on Circuits and Systems

Date of Conference:

18-21 May 2008