ISSN:
0260-2288
Source:
Emerald Fulltext Archive Database 1994-2005
Topics:
Electrical Engineering, Measurement and Control Technology
Notes:
A fully integrated sensor microsystem for blue/ultraviolet radiation detection is presented. The photosensitive part combines a blue/UV selective stripe-shaped photodiode with a small compensation infrared photodiode. A transimpedance amplifier with 1 GO feedback resistor is integrated on the same silicon chip. The main features of the op amp are a low offset (〈0.5mV) and fail-safe operation. This sensor has a maximal responsivity of 150 mV/nW at ? = 420 nm, corresponding to 43 percent quantum efficiency. A ratio of the responsivities at 420 nm and 1 µm as large as 560 is achieved. The system has a noise equivalent power of 5 10-13 W. The 2.2 mm2 microsystem is realized in a standard CMOS 0.5 µm process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1108/02602280010311374
Permalink