Photoresponse and color dependent crosstalk in an annular imager for an NDB optical encoder

CALARCO, F. P. QUINTIÁN, A. LUTENBERG AND J. LIPOVETZKY

Simposio; 2016 IEEE 7th Latin American Symposium on Circuits & Systems (LASCAS); 2016

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 non-uniform detectivity. The response of the chip was studied forthree different wavelengths. Also, a color dependent crosstalkanalysis was carried out. This design is intended for a non-diffractive beam 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.