Title :
Continuous-time delta-sigma based readout concepts for CZT detector arrays
Author :
Voelker, Matthias ; Zhou, Haiyan
Author_Institution :
Fraunhofer IIS, Erlangen, Germany
Abstract :
A new direct analog to digital conversion strategy for the readout of radiation detector arrays is presented in this paper. The traditional signal processing channel as used for radiation detector arrays is compared to the proposed solution. The main building blocks of the new concept are identified and presented in detail. A digitally stabilized front-end amplifier and two continuous-time oversampling analog to digital converter are presented. The new concept is compared to analog implementations with similar performance. The advantages of the new concept in terms of area and power consumptions reduction are illustrated.
Keywords :
II-VI semiconductors; amplifiers; analogue-digital conversion; cadmium compounds; delta-sigma modulation; low-power electronics; readout electronics; signal processing; zinc compounds; CZT detector arrays; CdZnTe; cadmium zinc tellurium; continuous-time delta-sigma readout; continuous-time oversampling; direct analog-digital conversion; front-end amplifier; power consumptions reduction; radiation detector arrays; signal processing channel; Analog-digital conversion; Array signal processing; Detectors; Noise; Power demand; Voltage-controlled oscillators; CZT detector array; analog digital converter (ADC); delta-sigma modulator; excess loop delay; low power; readout circuit; semi-gaussian shaping;
Conference_Titel :
Ph.D. Research in Microelectronics and Electronics (PRIME), 2010 Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-7905-4
