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

fYear

2010

Firstpage

554

Lastpage

556

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICSICT.2010.5667338

Filename

5667338