Four-quadrant multiplier using the floating-bulk technique for rail-to-rail input range and insensitivity to different input dc levels

IEICE Electronics Express

article

Ivan Padilla-Cantoya¹  Marco A. Gurrola-Navarro¹  Carlos A. Bonilla-Barragan¹  Jesus E. Molinar-Solis²  Agustin S. Medina-Vazquez¹  Jose M. Arce-Zavala¹  Luis Rizo-Dominguez³ 

[1] Dept. of Electro-Photonics Engineering, Universidad de Guadalajara;Dept. of Electrical Engineering, Instituto Tecnologico de Ciudad Guzman;Dept. for Electronic, Systems and Informatics, Instituto Tecnologico y de Estudios Superiores de Occidente

关键词: four-quadrant multiplier;    bulk-driven;    floating-bulk;    CMOS;    ultra-low voltage;   

DOI  :  10.1587/elex.19.20220130

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

A four-quadrant analog multiplier with ultra-low supply voltage operation, rail-to-rail input swing and insensitive to different dc levels between the multiplied input signals is presented. It is based on the Floating-Bulk technique, in which the input signal is coupled to the bulk terminal of a PMOS transistor by means of an input capacitor. This allows rail-to-rail operation and eliminates the dc level of the input signals regardless of the offset between them, maintaining linearity. Moreover, it also eliminates the threshold-voltage requirement in the signal path of the input transistors, allowing very low voltage operation defined by a gate-source and a drain-source voltages. Experimental results in 0.5µm technology demonstrate rail-to-rail operation with a 1.1V supply voltage even with different dc level voltages between the multiplied input signals. It offers a distortion of THD =0.95% for an input signal of 0.2Vpp at 100kHz.

【 授权许可】

CC BY