Author_Institution :
Dept. of Electr. Eng., Nat. Chia Yi Univ., Chiayi, Taiwan
Abstract :
In this paper, a CMOS monolithic digitized light detector with noise insensitivity for light monitoring applications is newly proposed. The proposed chip is attractive due to the fact that analog processing circuits and light sensor are integrated robustly and compactly. The output signal of the proposed chip is a pulse stream, it could be easily sent over a wide range of transmission media, such as package switch networks, radio, optical, infrared, ultrasonic, and so forth. Unlike previous works, the proposed chip is suitable for processing at a varied light range and also insensitivity to light noise for light monitoring applications. The light range is 15.5 to 2650 lux. All the functions and performance of the proposed monolithic digitized light detector are successfully tested and proven through measurements and confirmed it to be applied on the car-backing monitoring applications. The chip area is 1.998 × 1.616 mm2. The proposed chip is suitable for light monitoring devices, such as wireless sensor network devices.
Keywords :
CMOS integrated circuits; analogue processing circuits; integrated circuit measurement; integrated circuit noise; integrated circuit testing; light transmission; optical sensors; CMOS monolithic digitized light detector; analog processing circuit; car-backing monitoring application; infrared network; light monitoring application; light sensor; noise insensitivity; optical network; package switch network; radio network; transmission media; ultrasonic network; wireless sensor network device; Detectors; Modulation; Monitoring; Noise; Semiconductor device measurement; Sigma-delta modulation; IC; Light sensor; light transducer; wireless sensor network;
