Design of a Low-Noise Front-End Readout CSP-Shaper System for CZT Detectors

DOI: 10.4236/jsip.2013.42016   PDF   HTML   XML   3,599 Downloads   5,421 Views   Citations


This paper describes a low-noise front-end readout circuit for CZT detectors based on TSMC 0.35 um mixed-single CMOS technology; mainly analyzes the noise model of the detector-preamplifier and presents the low-noise circuit schematic of charge sensitive preamplifier and shaper. Considering the parasitical influences, the circuit and layout-design are optimized to reduce noise. The preliminary simulation results show that, the equivalent noise charge (ENC) is 74 e (rms), noise slope is 9 e/pF, power consumption is 2 mW, and non-linearity is <3%.

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H. Zeng, T. Wei, B. Gan and W. Gao, "Design of a Low-Noise Front-End Readout CSP-Shaper System for CZT Detectors," Journal of Signal and Information Processing, Vol. 4 No. 2, 2013, pp. 118-122. doi: 10.4236/jsip.2013.42016.

Conflicts of Interest

The authors declare no conflicts of interest.


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