Low power analog readout front-end electronics for time and energy measurements

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• 作者：R. Kleczekp> ; p>p>rafal.kleczek@agh.edu.pl" class="auth_mailp> ; P. Grybos ; R. Szczygiel
• 关键词：Low noise ; Low power ; Readout front-end electronics
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：1 June, 2014
• 年：2014
• 卷：748
• 期：Complete
• 页码：54-60
• 全文大小：2034 K

文摘

We report on the design and measurements of an analog front-end readout electronics dedicated for silicon microstrip detectors with relatively large capacitance of the order of tens pF for time and energy measurements of incoming pulses. The front-end readout electronics is required to process input pulses with an average rate of 150 kHz/channel with low both power consumption and noise at the same time. In the presented solution the single channel is built of two different parallel processing paths: fast and slow. The fast path includes the fast CR-RC shaper with the peaking time t_p=40 ns and is optimized to determine the input charge arrival time. The slow path, which consists of the slow CR-(RC)p>2p> shaper with the peaking time t_p=80 ns, is dedicated for low noise accurate energy measurement. The analog front-end electronics was implemented in UMC 180 nm CMOS technology as a prototype ASIC AFE. The AFE chip contains 8 channels with the size of 58 渭m脳1150 渭m each. It has low power dissipation P_diss=3.1 mW per single channel. The article presents the details of the front-end architecture and the measurement results.