RT Journal Article
T1 Analog CMOS Readout Channel for Time and Amplitude Measurements With Radiation Sensitivity Analysis for Gain-Boosting Amplifiers
A1 Sánchez Rodríguez, Trinidad
A1 Gómez Galán, Juan Antonio
A1 Márquez Lasso, Fernando J.
A1 Sánchez Raya, Manuel
A1 Hinojo Montero, José María
A1 Muñoz Chavero, Fernando
AB The front-end readout channel consists of a charge sensitive amplifer (CSA) and two differentunipolar-shaping circuits to generate pulses suitable for time and energy measurement. The signal processingchain of the single channel is built of two different parallel processing paths: a fast path with a peaking timeof 30 ns to obtain the time of arrival for each particle impinging the detector; and a slow path with a peakingtime of 400 ns dedicated for low noise amplitude measurements, which is formed by a pole-zero cancellationcircuit and a 4th order complex shaper based on a bridged-T architecture. The tunability of the system isaccomplished by the discharge time constant of the CSA in order to accommodate various event rates. Thereadout system has been implemented in a 180 nm CMOS technology with the size of 525 SYNm x 290 SYNm.The building blocks use compact gain-boosting techniques based on quasi-GSoating gate (QFG) transistorsachieving accurate energy measurement with good resolution. The high impedance nodes of QFG transistorsrequire a detailed study of sensitivity to single-effect transients (SET). After carrying out this study, thispaper proposes a method to select the value of the QFG capacitors, minimizing the area occupancy whilemaintaining robustness to radiation. The nonlinearity of the CSA-slow-shaper has been found to be less than1% over a 10-70 fC input charge. The power dissipation of the readout channel is 4.1 mW with a supplyvoltage of 1.8 V.
PB Institute of Electrical and Electronics Engineers
SN 2169-3536 (electrónico)
YR 2021
FD 2021
LK http://hdl.handle.net/10272/20736
UL http://hdl.handle.net/10272/20736
LA eng
NO Sanchez-Rodriguez, T., Gomez-Galan, J. A., Marquez, F., Sanchez-Raya, M., Hinojo, J., & Munoz, F. (2021). Analog CMOS Readout Channel for Time and Amplitude Measurements With Radiation Sensitivity Analysis for Gain-Boosting Amplifiers. In IEEE Access (Vol. 9, pp. 148421–148432). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/access.2021.3124644
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026