International Workshop on Semiconductor Pixel Detectors for Particles and Imaging (PIXEL2012)

Monolithic Active Pixel Matrix with Binary Counters (MAMBO) ASIC, using a nested well structure to decouple the detector from the electronics

6 Sept 2012, 09:20

20m

Hotel Listel Inawashiro, Inawashiro, Japan

ORAL Pixel technologies - Monolithic detectors Session6

Speaker

Farah Fahim Khalid (Fermilab)

Description

Monolithic Active Matrix with Binary Counters (MAMBO) V ASIC has been designed for detecting and measuring low energy X-rays from 6-12keV. A nested well structure with a buried n-well (BNW) and a deeper buried p-well (BPW) is used to electrically isolate the detector from the electronics. BNW acts as an AC ground to electrical signals and behaves as a shield. BPW creates a homogenous electric field in the entire detector volume. The ASIC consists of a matrix of 50×52 pixels, each of 105x105µm2. Each pixel contains analogue functionality accomplished by a charge preamplifier, CR-RC2 Shaper and a baseline restorer. It also contains a window comparator with Upper and Lower thresholds which can be individually trimmed by 4 bit DACs to remove systematic offsets. The hits are registered by a 12 bit counter which is reconfigured as a shift register to serially output the data from the entire ASIC. Test results indicate good analogue and digital performance.

Presentation materials

Slides

PIXEL2012_f.pdf

PIXEL2012_f.pptx