Photoresponse and color dependent crosstalk in an annular imager for an NDB Optical Encoder

PEREZ QUINTIÁN,FERNANDO; CALARCO NICOLÁS; LIPOVETSKY, JOSÉ; ARIEL LUTENBERG

Florianópolis

Simposio; VII IEEE LATIN AMERICAN SYMPOSIUM ON CIRCUITS AND SYSTEMS (LASCAS); 2016

IEEE

In this work we introduce the full characterizationof an Application-Specific Integrated Circuit (ASIC) sensor. Thechip, fabricated in a standard 0.5μm channel length CMOSprocess, implements a light sensor having a programmable nonuniformdetectivity. The response of the chip was studied forthree different wavelengths. Also, a color dependent crosstalkanalysis was carried out. This design is intended for a nondiffractivebeam optical encoder, but the ideas presented in thiswork could be used in other custom light sensors. The crosstalkanalysis improves the comprehension of this phenomenon inCMOS sensors.