A 500 k event/sec 12-bit ADC system with high-speed buffered PCI interface

Author

Zavarzin, V.G. ; Earle, W.A.

Author_Institution

Dept. of Phys., Boston Univ., MA, USA

Volume

46

Issue

3

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

414

Lastpage

416

Abstract

A low-cost replacement for popular LeCroy 2249-series charge-integrating ADCs with more than 100 times faster data throughput is designed and tested. The A/D converter chips used in the design provide 700 ns conversion time. Parallel 25 MHz/32-bit bus made of a twisted pair ribbon cable connected to a high-speed buffered PCI interface is capable of 100 MByte/s data transfer to an ordinary IBM PC. The front-end of each ADC channel is equipped with a unipolar Baseline Restoration Circuit allowing use of AC coupling at very high signal rates (RF preamplifiers, HV decoupled signal sources like PMTs, wire chambers, etc.). Developed for Positron Emission Tomography, the system could also be used for a range of High Energy Physics applications, Spectroscopy, Medical Imaging and others where high event rate occurs

Keywords

analogue-digital conversion; biomedical electronics; microcomputer applications; nuclear electronics; positron emission tomography; preamplifiers; 12-bit ADC system; A/D converter chips; HV decoupled signal sources; RF preamplifiers; high energy physics applications; high event rate; high-speed buffered PCI interface; medical imaging; positron emission tomography; spectroscopy; twisted pair ribbon cable; unipolar baseline restoration circuit; wire chambers; Communication cables; Coupling circuits; Positron emission tomography; Preamplifiers; RF signals; Radio frequency; Signal restoration; Testing; Throughput; Wire;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.775554

Filename

775554