Multichannel mixed-mode IC for digital readout of silicon strip detectors

摘要

The design of a mixed mode 64-channel ASIC for digital readout of silicon strip detectors used in X-ray imaging applications is presented. The design is implemented in a 0.8 μm CMOS n-well epi-type substrate technology. The single channel consists of a charge sensitive preamplifier, a shaping amplifier, a discriminator and a pseudo-random 20-bit counter. In addition to the 64-channel core which is responsible for signal processing and data storage, the IC comprises additional blocks like an internal calibration circuit, internal DACs and a command decoder which governs commu- nication of the IC with the external world.