Folded-cascode transimpedance amplifiers employing a CMOS inverter as input stage

Author

Lima, Elton N. ; Cura, Jose Luis ; Nero Alves, Luis

Author_Institution

Dept. Eletron., Telecomun. e Inf., Inst. de Telecomun., Aveiro, Portugal

fYear

2013

fDate

8-12 Sept. 2013

Firstpage

1

Lastpage

4

Abstract

This paper presents the design and comparison of two shunt feedback transimpedance amplifiers (TIAs) implemented in standard 350nm CMOS technology from Austria Microsystems. These transimpedance amplifiers are based on a folded cascode topology. The first one is a conventional folded-cascode (CFC-TIA) and the second is a modified version folded-cascod (MFC-TIA) employing a CMOS inverter at the input stage. The proposed MFC-TIA achieves a gain of 80dBΩ, 370MHz bandwidth and minimum input current noise of 1,6pA√Hz with 0.5pF total input capacitance. The achieved results show that MFC-TIAs can match the performance of CFC-TIAs with reduced implementation area, thus being a suitable solution for photo-detector array receivers.

Keywords

CMOS integrated circuits; integrated circuit noise; invertors; operational amplifiers; Austria Microsystems; CMOS inverter; CMOS technology; bandwidth 370 MHz; capacitance 0.5 pF; current noise; folded cascode topology; folded-cascode transimpedance amplifiers; photo-detector array receivers; shunt feedback transimpedance amplifiers; size 350 nm; Bandwidth; CMOS integrated circuits; Capacitance; Impedance; Noise; Topology; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design (ECCTD), 2013 European Conference on

Conference_Location

Dresden

Type

conf

DOI

10.1109/ECCTD.2013.6662204

Filename

6662204