Title :
CMOS Transimpedance Amplifier for Visible Light Communications
Author :
Chen, Roger Yubtzuan ; Zong-Yi Yang
Author_Institution :
Dept. of Electron. Eng., Nat. Yunlin Univ. of Sci. & Technol., Doulio, Taiwan
Abstract :
Transimpedance amplifiers (TIAs) play a pivotal role in the optical wireless receiver front end. To exploit its distinctive open-loop characteristics, a feedback transimpedance amplifier comprising a feedforward current amplifier (CA-TIA) is investigated. Attributing to the small input impedance with a high-pass response of its feedforward gain element, the bandwidth of the CA-TIA is less sensitive to the TIA gain. The analysis and implementation of the CA-TIA are experimentally validated.
Keywords :
CMOS integrated circuits; feedback amplifiers; feedforward amplifiers; operational amplifiers; optical receivers; CA-TIA; CMOS transimpedance amplifier; feedback transimpedance amplifier; feedforward current amplifier; feedforward gain element; high-pass response; open loop characteristic; optical wireless receiver front end; visible light communication; Bandwidth; CMOS integrated circuits; Noise; Optical feedback; Optical receivers; Radio frequency; Wireless communication; Optical wireless communications; optical wireless receiver; transimpedance amplifier (TIA); visible light communications (VLCs); visible light communications (VLCs).;
Journal_Title :
Very Large Scale Integration (VLSI) Systems, IEEE Transactions on
DOI :
10.1109/TVLSI.2014.2365462
