"A low power, low noise, mixed signal switched CMOS charge sensitive readout chain"

A CMOS charge sensitive readout chain for pixel applications, has been designed and fabricated in 0.8 µm technology. The system is capable of simultaneous position sensing and energy measurement. Each pixel circuitry incorporates both analog and digital features to perform the dual tasks. The overall gain of the chain is 340 mV/fC. With an ENC of 61 e and a power consumption of 1.8 mW per pixel at 3.3V it is a promising solution for pixel X-ray detectors. The paper describes the system architecture and reports experimental measurements.