Title :
A novel MOS compatible light intensity-to-frequency converter suited for monolithic integration
fDate :
6/1/1982 12:00:00 AM
Abstract :
A novel circuit for light intensity-to-frequency conversion (LFC) suited for monolithic integration in MOS technologies is presented. The function is based on an R~S~ flip-flop whose toggle frequency is controlled by the discharge of a capacitance at the inputs of the R~S~ FF. For homogeneous illumination, the output frequency is proportional to the incident light level. For an implemented device, a dynamic range of more than six decades (approximately 0.2 lux up to >2/spl times/10/SUP 5/ lux) and a range of linearity of five decades were found.
Keywords :
Convertors; Field effect integrated circuits; Flip-flops; Transducers; convertors; field effect integrated circuits; flip-flops; transducers; Clocks; Delay; Design engineering; Dynamic range; Feedback; Geometry; Linearity; Monolithic integrated circuits; Permission; Shift registers;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1982.1051780
