A MOS analog mixer using a cross-coupled pair with source followers

Author

Mak, Kin Chung ; Luong, Howard Cam

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong

fYear

1996

fDate

18-21 Nov 1996

Firstpage

117

Lastpage

120

Abstract

A low-voltage MOS analog mixer using a cross-coupled pair as the core is described. The mixing operation is based on the square-law characteristic of the MOS transistor in the saturation region. Both theory and simulation show that the mixing characteristic is superior and not sensitive to device mismatches. The proposed mixer has a -3 dB frequency of 135 MHz and consumes 2 mW power. The nonlinearities of the mixer are less than 0.33% and 0.43%, and the THD is about 0.32% and 0.51%, with 0% and 5% device mismatch, respectively

Keywords

CMOS analogue integrated circuits; analogue multipliers; circuit analysis computing; harmonic distortion; integrated circuit modelling; mixers (circuits); 135 MHz; 2 mW; MOS analog mixer; MOS transistor; MOSIS SCN26G technology; THD; cross-coupled pair; device mismatch; four-quadrant multiplier; low-voltage mixer; mixer nonlinearities; power consumption; saturation region; simulation; source followers; square-law characteristic; Amplifiers; Circuits; Equations; Gyroscopes; Linearity; Low voltage; MOSFETs; Phase locked loops; Signal processing; Water resources;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996., IEEE Asia Pacific Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-3702-6

Type

conf

DOI

10.1109/APCAS.1996.569233

Filename

569233