Title :
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
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;
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
DOI :
10.1109/ECCTD.2009.5275090
