A Novel design of high precision and adjustable current source used for Operational Transconductance Amplifier in 0.35µm AMS technology

Author

Laajimi, Radwene ; Khitouni, Nizar

Author_Institution

Electron., Micro-Technol. & Commun. (EMC) Res. group, Univ. of Sfax, Sfax, Tunisia

fYear

2013

fDate

18-21 March 2013

Firstpage

1

Lastpage

6

Abstract

Current source is one of the basic building blocks of analog VLSI systems. Here we design a novel structure of current source in AMS 0.35 μm technology. T-Spice simulation results confirm the high precision of the proposed circuit. In fact, we achieved a maximum error of 0.5%, a high large band of linearity between -1.1V and 0 V. In addition our new circuit allowed us a low input impedance of 961Ω and a high output A B impedance of 0.18 MΩ. Eventually we have also succeeded in obtaining a gain band width (GBW) equal to 80MHz and 60 dB gain (Av) at ±1.5V supply voltage.

Keywords

constant current sources; operational amplifiers; AMS technology; T-Spice simulation; analog VLSI systems; bandwidth 80 MHz; gain 60 dB; high-precision current source; operational transconductance amplifier; resistance 0.18 Mohm; resistance 961 ohm; size 0.35 mum; Accuracy; Impedance; Low voltage; Mirrors; Resistance; Transconductance; Transistors; Current mirror; Operational amplifier; analog Design; low voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Signals & Devices (SSD), 2013 10th International Multi-Conference on

Conference_Location

Hammamet

Print_ISBN

978-1-4673-6459-1

Electronic_ISBN

978-1-4673-6458-4

Type

conf

DOI

10.1109/SSD.2013.6564141

Filename

6564141