A Low-Power Area-Efficient SAR-Assisted Hybrid ADC for Ultrasound Imaging

Title

A Low-Power Area-Efficient SAR-Assisted Hybrid ADC for Ultrasound Imaging

 Author

Shi, Yixin (TU Delft Electrical Engineering, Mathematics and Computer Science; TU Delft Microelectronics)

Contributor

Pertijs, Michiel (mentor)

Degree granting institution

Delft University of Technology

 Programme

Electrical Engineering

 Date

2017-08-14

 Abstract

This thesis presents a Low-Power Area-Ecient SAR-Assisted Hybrid ADC for ultra-
sound imaging systems. This ADC combines a 5-bit SAR ADC per channel with a 4-bit single-slope ADC that produces the converter's LSBs and is implemented using shared hardware. The number of unit capacitors of the proposed ADC is about 1/16th of that of a 9-bit conventional SAR ADC, thus saving die area. The power consumption is reduced by sharing the delay line and ramp generator of the single-slope ADC among an ADC array. The simulated ENOB is 8.48bits, the power consumption is 419.3µW at a sampling rate of 33MS/s, the achieved FoM is 36fJ/conv-step. The estimated die area per channel is 150µm×107µm.

 Subject

Hybrid ADC
SAR
ultrasound imaging

 To reference this document use:

http://resolver.tudelft.nl/uuid:b38b134c-88a8-4fe8-a706-68abb0a715cc

 Embargo date

2018-08-14

 Part of collection

Student theses

 Document type

master thesis

 Rights

© 2017 Yixin Shi
Files
PDF MSc_Thesis_Yixin_Shi.pdf 3.38 MB
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