A CMOS Time-to-digital converter for multi-voltage threshold method in Positron Emission Tomography

被引：0

作者：

Li, Yan ^{[1
]}

Yu, Hang ^{[1
]}

Jiang, Lai ^{[1
]}

Ji, Zhen ^{[1
]}

Zhu, Jun ^{[2
]}

Niu, Ming ^{[2
]}

Xiao, Peng ^{[2
]}

机构：

[1] Shenzhen Univ, Coll Comp Sci & Software Engn, Shenzhen City Key Lab Embedded Syst Design, Shenzhen, Peoples R China

[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan, Peoples R China

来源：

2013 IEEE INTERNATIONAL CONFERENCE OF ELECTRON DEVICES AND SOLID-STATE CIRCUITS (EDSSC) | 2013年

关键词：

PET; scintillation pulse; MVT; TDC; PET;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Avoiding use of traditional high-speed analog-to digital converters (ADCs) and constant fraction discriminators, multi-voltage threshold (MVT) method is able to digitally sample positron emission tomography (PET) scintillation pulse with reasonable cost. As the key component of the MVT method, a time-to-digital convertor (TDC) with high resolution and large dynamic range is presented in this work. The TDC architecture uses a delay locked loop (DLL) to generate the fast clock edges from a 100 MHz clock, and a 32-stage Vernier delay lines (VDL) is used to achieve the 40pS timing resolution. The proposed TDC is designed using the standard 0.25 mu m CMOS technology with 2.5V normal supply voltage. The power consumption of the TDC is similar to 70 mW.

引用

页数：2