J.P. Richer
University of Paris-Sud
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by J.P. Richer.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998
R. Chase; A. Hrisoho; J.P. Richer
Abstract An 8-channel preamplifier-shaper circuit for use with detectors having a capacitance in the range 20–50xa0pF has been designed in 1.2xa0μ CMOS AMS technology. The shaper is designed so that the peaking time can be adjusted, by steps, in the range 200xa0ns–2xa0μs by simple digital control. The pole-zero cancellation circuit uses an original method of sensing the preamplifier feedback capacitor discharging current and producing an identical current to discharge the capacitance of the pole-zero cancellation circuit. The series noise resistance r s = 415 Ω has been measured (270xa0 Ω of which is the protection resistor). The input capacitance of the preamplifier is 10xa0pF + the strays of the test box 10xa0pF for a total of 20xa0pF. The input PMOS transistor has a gm of 5xa0mA/V (from simulation) at 210xa0μA drain current. The cross-talk between channels is less than 1%.
