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

• 作者: Bo Gan Huiming Zeng Tingcun Wei Wu Gao
• 来源期刊: 信号与信息处理(英文)
• 学科: 工学
• 关键词: CZTdetector FRONT-END READOUT CSP LOW-NOISE
• 年，卷（期）: 2013,（2）
• 页码范围: 118-122
• 页数: 5页
• 分类号: TN7

摘要

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