Skip to Main Content
In this paper we present a spectrometer realized by bump-bonding a 300-Â¿m-pitch, 32 Ã 32 pixel silicon X-ray detector chip to a 0.35-Â¿m CMOS, 3-cm2 read-out chip. The self-triggered, mixed analog-digital read-out chip, with 1024 channels, digitizes the X-ray photon energy with 10 bits of resolution, provides the coordinates of the triggered pixels and achieves 34 erms - of input referred noise, Â±3.3 LSB of INL and Â±0.2 LSB of DNL, while consuming 555 mW from a 3.3 V supply. Preliminary experimental results on the complete spectrometer, obtained both with electrical stimulation of the device and by irradiating the detector with X-rays, are reported.
Date of Conference: 13-16 Dec. 2009