Title :
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
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;
Conference_Titel :
Circuits and Systems, 1996., IEEE Asia Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-3702-6
DOI :
10.1109/APCAS.1996.569233
