aEuropean Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex, France
bLaboratoire de Physique Subatomique et de Cosmologie, Grenoble, France
cLaboratoire TIMA, Grenoble, France
Abstract:
The paper presents a 16-channel amplifier-discriminator designed in BiCMOS technology. It will be used for the binary parallel readout of gas-filled detectors being designed at the European Synchrotron Radiation Facility. The circuit (named AMS211) has been manufactured. The measured transimpedance gain (400 KΩ), bandwidth (25 MHz) and noise (1570 e−+95 e−/pF ENC) well match the simulated results. The discriminator thresholds are individually controlled by built-in Digital to Analogue Converter. The experience gained with a first prototype of readout electronics indicates that the AMS211 should meet our requirements.