Title :
A CMOS monolithic integrated ambient light sensor based on a single photodiode stack
Author :
Meister, Matthew ; Liebold, U. ; Jager, Andre ; Thiele, Simon ; Weirauch, R. ; Gabler, D. ; Bach, K.
Author_Institution :
Inst. for Microelectron. & Mechatron. Syst., Ilmenau, Germany
Abstract :
Ambient light sensors are often used in electronic devices with brightness control. Therefore, the luminosity function of the human eye has to be adapted by a semiconductor sensor. This can be realized by a photodiode stack of 3 pn-junctions. The photo-generated currents were combined to a sensitivity response, which is adapted to luminosity function. This concept is verified by numerical simulations and measurements.
Keywords :
BiCMOS integrated circuits; CMOS integrated circuits; integrated circuit measurement; numerical analysis; p-n junctions; photoconductivity; photodetectors; photodiodes; photoemission; semiconductor counters; CMOS monolithic integrated ambient light sensor; brightness control; electronic device; human eye; luminosity function; numerical simulation; photogenerated current; pn-junction; semiconductor sensor; single photodiode stack; CMOS integrated circuits; Photodiodes; Radiometry; Ambient light sensor; beer-lambert law; depth of light penetration; luminosity function; photo diode sensitivity; photodiode; photodiode stack;
Conference_Titel :
Multi-Conference on Systems, Signals & Devices (SSD), 2014 11th International
Conference_Location :
Barcelona
DOI :
10.1109/SSD.2014.6808875
