Title :
Delta-sigma loop based on charge pumping in SOI optical sensor
Author :
Harik, Louis ; Sallese, Jean-Michel ; Kayal, Maher
Author_Institution :
Electr. Eng., Ecole Polytech. Fed. de Lausanne, Lausanne
Abstract :
In this paper, the partially depleted SOI phototransistor has been used as a light intensity sensor. A pixel implementing the technique elaborated in was designed and implemented on SOI technology. The circuit implements a first order delta-sigma modulator. Measured data show flux densities as low as 3 mW/m2 and an SNR of 60 dB.
Keywords :
charge pump circuits; delta-sigma modulation; optical sensors; silicon-on-insulator; SOI optical sensor; SOI phototransistor; charge pumping; delta-sigma loop; first order delta-sigma modulator; light intensity sensor; Analog-digital conversion; CMOS image sensors; Charge pumps; Delta modulation; MOSFET circuits; Optical sensors; Photoconductivity; Phototransistors; Pulse width modulation; Silicon on insulator technology;
Conference_Titel :
Sensors, 2008 IEEE
Conference_Location :
Lecce
Print_ISBN :
978-1-4244-2580-8
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2008.4716704
