Title :
A 4-channel photocurrent detector with 118dB-DR TIAs
Author :
Wengang, Huang ; Zhengrong, He ; Yingjun, Zhong ; Xiaozong, Huang ; Yuesheng, Wang
Author_Institution :
Nat. Labs. of Analog IC, Chongqing, China
Abstract :
In this paper, a 4-channel photocurrent detector is described which is used in the field of photoelectric detection. Each channel of the detector consists of TIAs and voltage comparator, and current detection threshold can be set by external voltage. The TIA has measured 1.5mA input current overload capacity and 1.9 nArms equivalent input noise current level. The detector is processed in 2 um all-NPN bipolar process technology. The die size is 2.13 mm×1.31 mm. The total power dissipation is 60 mW at power supply of ±5V.
Keywords :
bipolar integrated circuits; comparators (circuits); operational amplifiers; photodetectors; photoelectricity; 4-channel photocurrent detector; bipolar process technology; current 1.5 mA; current detection threshold; current overload capacity; equivalent input noise current level; photoelectric detection; power 60 mW; size 1.31 mm; size 2.13 mm; transimpedance amplifiers; voltage 5 V; voltage comparator; Current measurement; Detectors; Differential amplifiers; Noise; Photoconductivity; Power supplies; Resistance;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
DOI :
10.1109/ICSICT.2010.5667338
