Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (6): 358-365 doi: 10.13538/j.1001-8042/nst.22.358-365

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Particle detector readout integrated circuit of 0.18μm technology with 164 e equivalent noise charge

LIXiangyu~* LIU Haifeng ZHANG Qi SUN Yihe   

  1. Tsinghua National Laboratory for Information Science and Technology,Institute of Microelectronics,Tsinghua University,Beijing 100084,China
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LI Xiangyu, LIU Haifeng, ZHANG Qi, SUN Yihe . Particle detector readout integrated circuit of 0.18μm technology with 164 e equivalent noise charge.Nuclear Science and Techniques, 2011, 22(6): 358-365     doi: 10.13538/j.1001-8042/nst.22.358-365

Abstract:

Integrated circuits of deep submicron(DSM) CMOS technology are advantageous in volume density, power consumption and thermal noise for multichannel particle detection systems,but there are challenges in the front-end circuit design.In this paper,we present a 0.18μm CMOS front-end readout circuit for low noise CdZnTe detectors in tens of pF capacitance.Solutions to the noise and gate leak problems in DSM technologies are discussed in detail.A prototype chip was designed,with a charge sensitive preamplifier,a 4th order semi-Gaussian shaper and several output drivers.Test results show that the chip has an equivalent noise charge of 164 e,without connecting it to a detector,with an integral nonlinearity of<0.21%and differential nonlinearity of<3.75%.

Key words: Particle detector, Readout circuit, ASIC, Low noise, Deep submicron