A Broadband Transimpedance Amplifier (TIA) for Visible Light Communication in 0.18 μm CMOS

被引：0
|
作者：
Parapari, Ehsan Semsar [1 ]
Parapari, Elmira Semsar [1 ]
Koozehkanani, Ziaaddin Daei [1 ]
机构：
[1] Univ Tabriz, Dept Elect & Comp Engn, Tabriz, Iran
来源：
2020 28TH IRANIAN CONFERENCE ON ELECTRICAL ENGINEERING (ICEE) | 2020年
关键词：
Visible Light Communication (VLC); free space; analog front end (AFE); transimpedance amplifier (TIA); regulated cascode (RGC); low noise; broadband;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a broadband inductorless transimpedance amplifier for visible light communication (VLC) systems. The presented TIA utilizes shunt-shunt feedback topology to increase the TIA bandwidth. Also the regulated cascode (RGC) structure is employed as input stage to further decrease the input impedance of the TIA. The assumed modulation is On-Off Keying (OOK) and the TIA is designed and simulated in TSMC 0.18 mu m CMOS technology using Cadence analog virtuoso. The simulated results show that the TIA consumes 10mA current from 1.8V power supply (excluding the output buffer) while achieving the transimpedance gain of 68.8 dB Omega and the -3 dB bandwidth of 5.5GHz in the presence of 650fF photodiode input capacitance. The simulated TIA presents a low input referred noise density of 19 pA/root Hz to satisfy the sensitivity requirements of VLC links. A measured 7.8 Gb/s data-rate is achieved through the use of wideband circuit design techniques.
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页数：4
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