Offset compensation using unbalanced polarization

Author

Muniz, Carlos ; Díaz, Alejandro ; Carvajal, Ramon G.

Author_Institution

Dpto. de Electronica, Instituto Nacional de Astroflsica Optica y Electronica, Puebla

fYear

2006

fDate

21-24 May 2006

Lastpage

1871

Abstract

This paper proposes two new offset compensation techniques based on unbalanced polarization. They are based on the use of transistors operating in subthreshold to sense the DC offset and to use this value to generate unbalanced bias currents. These strategies do not degrade the frequency response and have smaller cost in area, power consumption and complexity than other offset compensation techniques. As a proof of concept, two low-voltage, current-mode multipliers and dividers using these strategies and designed in a 0.5 mum CMOS process are presented

Keywords

CMOS integrated circuits; compensation; current-mode circuits; dividing circuits; low-power electronics; multiplying circuits; polarisation; power electronics; 0.5 micron; CMOS; DC offset; current-mode multipliers; dividers; frequency response; offset compensation; power consumption; transistors; unbalanced bias currents; unbalanced polarization; Bandwidth; CMOS process; Circuits; Costs; DC generators; Degradation; Frequency; Optical polarization; Optical sensors; Roentgenium;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1692973

Filename

1692973