A novel bulk-input low voltage and low power four quadrant analog multiplier in weak inversion

摘要

A new four quadrant voltage mode bulk input analog multiplier is presented. The proposed multiplier is designed to operate in weak inversion. Multiplication is done by driving the bulk terminals of the MOS devices which offers linear dynamic range of ±80 mV. The simulation shows, it has a linearity error of 5.6%, THD of nearly 5% and -3 dB band width of 221 kHz. Total power consumption is very low i.e. 714 nW. The circuit operates at a supply voltage of 0.5 V and is designed using 180 nm CMOS technology. It is suitable for low power bioelectronics and neural applications.