A new scheme for DC offset compensation and its application to current mode and voltage mode D/A converters

Author

Marri, Swathi ; Ramirez-Angulo, Jaime ; Lopez-Martin, Antonio J. ; Carvajal, Ramon G.

Author_Institution

Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA

fYear

2009

Firstpage

743

Lastpage

746

Abstract

A new DC offset compensation technique for voltage buffers is presented. It can used to improve the accuracy of data converters. This technique also compensates the finite gain error of the op-amp and it is fast compared to conventional techniques. As an application of this technique, a 10-bit current mode and a 10-bit voltage mode D/A converter are described. Simulation results in 0.5 mum CMOS technology are provided to validate the design.

Keywords

CMOS analogue integrated circuits; buffer circuits; current-mode circuits; digital-analogue conversion; operational amplifiers; CMOS technology; D/A converters; DC offset compensation; current mode converters; data converters; op-amp finite gain error compensation; size 0.5 mum; voltage buffers; voltage mode converters; Application software; CMOS technology; Capacitors; Clocks; Linearity; Operational amplifiers; Switches; Switching circuits; Virtual colonoscopy; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design, 2009. ECCTD 2009. European Conference on

Conference_Location

Antalya

Print_ISBN

978-1-4244-3896-9

Electronic_ISBN

978-1-4244-3896-9

Type

conf

DOI

10.1109/ECCTD.2009.5275090

Filename

5275090