Low-current sensing circuit and topology for portable gamma radiation sensor

Author

Ailavajhala, Mahesh S. ; Latif, Muhammad Rizwan ; Mitkova, M.

Author_Institution

Dept. of Electr. & Comput. Eng., Boise State Univ., Boise, ID, USA

fYear

2014

fDate

18-18 April 2014

Firstpage

1

Lastpage

4

Abstract

A sensing circuit is presented for a portable/handheld semiconductor based radiation sensor, which senses low current changes without the inclusion of transistor noise issues. This circuit design block was implemented using supporting circuit architectures to enable sensing between 33pA to 1nA using low voltages. Additionally, a unique circuit topology is presented by which the effect of radiation damage to the silicon substrate and any devices on the substrate is reduced.

Keywords

MOSFET; electric sensing devices; gamma-rays; low-power electronics; network topology; radiation effects; Si; circuit design block; circuit topology; current 33 pA to 1 nA; low voltages; low-current sensing circuit; low-current sensing topology; portable gamma radiation sensor; portable-handheld semiconductor; radiation damage; silicon substrate; transistor noise; Capacitors; Circuit synthesis; Integrated circuit modeling; Sensors; Substrates; Topology; Circuit topology; Low-current; Radiation sensing circuitry;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics And Electron Devices (WMED), 2014 IEEE Workshop On

Conference_Location

Boise, ID

ISSN

1947-3834

Print_ISBN

978-1-4799-2222-2

Type

conf

DOI

10.1109/WMED.2014.6818723

Filename

6818723