A radiation detection readout circuit with current feedback baseline holder

Author

Xiao-Lu Chen ; Ya-Cong Zhang ; Wen-Gao Lu ; Zhong-Jian Chen

Author_Institution

Key Lab. of Microelectron. Devices & Circuits, Peking Univ., Beijing, China

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1

Lastpage

3

Abstract

This paper describes a radiation detection readout circuit for portable dosimeter which is aimed at low power, low noise and high counting rate. A current feedback baseline holder circuit is proposed to solve the baseline shift problem without any other performance deterioration. The core circuit has been implemented in 0.35μm CMOS technology. It achieves 46mV/fC conversion gain, 200kcps counting rate and consumes 260μA current from 3.3V supply. When no detector is connected to the chip, the equivalent input noise charge is 0.094fC rms.

Keywords

CMOS integrated circuits; dosimeters; radiation detection; readout electronics; CMOS technology; baseline shift problem; core circuit; current 260 muA; current feedback baseline holder; high counting rate; low noise rate; low power rate; portable dosimeter; radiation detection readout circuit; size 0.35 mum; voltage 3.3 V; CMOS integrated circuits; CMOS technology; Detectors; Power demand; Signal to noise ratio; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4673-2474-8

Type

conf

DOI

10.1109/ICSICT.2012.6467691

Filename

6467691