Channeltron Detector Readout ASIC in 0.35µm HV CMOS for Cold Solar Wind Analysis

Low-power analog front-end circuits for channeltron detectors (or Channel Electron Multiplier: CEMs) have been fabricated in 0.35-μm CMOS technology to characterize low energy solar wind particles. They have been designed to readout signals for incident charges ranging from 50 fC to 20 pC. Each front end circuit consists of a charge preamplifier, an amplifier, a discriminator, a monostable circuit and a LVDS. Requirement on the complete front end is to consume less than 6.5 mW/channel for a maximum event detecting rate of 40 MHz.