Spectrum1k-integrated circuit for medical imaging designed in CMOS 40 nm

We present a multichannel integrated circuit of pixel architecture designed in CMOS 40 nm technology. The chip is composed of 40 x 24 pixels of 75 mu m pitch working in the single photon counting mode, each built of front-end amplifier, peak and hold detector, 6-bit analog to digital converter, and memory composed of 64 x 12-bit counters. Thanks to the proposed functionality it is possible to store in each pixel separately information of incoming particles energy spectrum. The chip is dedicated to operating with both electrons and holes of 2.2 ke(-)-35 ke(-) energy range. The IC occupies an area of 2 x 4.5 mm(2), is already back from fabrication, and is under preliminary measurements.

Automated summary

We present a multichannel integrated circuit of pixel architecture designed in CMOS 40 nm technology, which can work in single photon counting mode and has the ability to store the energy spectrum information of particles.