Title :
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
fDate :
Oct. 29 2012-Nov. 1 2012
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;
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
DOI :
10.1109/ICSICT.2012.6467691
