Dual-mode CMOS feed-forward transimpedance amplifier for LADARs

Author

Seung-Hoon Kim ; Sang-Bock Cho ; Sung Min Park

Author_Institution

Sch. of Electron. Eng., Univ. of Ulsan, Ulsan, South Korea

Volume

50

Issue

23

fYear

2014

fDate

11 6 2014

Firstpage

1678

Lastpage

1680

Abstract

A dual-mode transimpedance amplifier (TIA) is realised in a 0.18 μm CMOS technology for the applications of 1 Gbit/s laser detection and ranging (LADAR) systems. The proposed dual-mode CMOS feed-forward TIA consists of a voltage-mode inverter input stage with a feedback resistor, followed by a current-mode common-gate amplifier with a feed-forward technique applied at the gate so as to achieve low noise, low power consumption, high gain and wide bandwidth characteristics simultaneously. The measured results demonstrate 76 dBΩ transimpedance gain, 720 MHz bandwidth for 0.5 pF photodiode capacitance, -26.3 dBm sensitivity for 10^-12 bit error rate and 20.7 mW power dissipation from a single 1.8 V supply.

Keywords

CMOS integrated circuits; current-mode circuits; feedforward amplifiers; invertors; operational amplifiers; optical radar; photodiodes; resistors; CMOS technology; LADAR; bandwidth 720 MHz; bit rate 1 Gbit/s; capacitance 0.5 pF; current-mode common-gate amplifier; dual-mode CMOS feed-forward transimpedance amplifier; dual-mode CMOS feed-forward-TIA; feed-forward technique; feedback resistor; laser detection and ranging systems; photodiode capacitance; power 20.7 mW; size 0.18 mum; transimpedance gain; voltage 1.8 V; voltage-mode inverter; wide bandwidth characteristics;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.2678

Filename

6955134