High-linear four-quadrant multiplier based on MOS weak-inversion region translinear principle with adaptive bias technique

In this paper, we propose the high-linear four-quadrant analog multiplier based on MOS weak-inversion region. Because the proposed multiplier is based on the translinear principle, it is insensitive to the absolute accuracy of the devices and temperature variation. Furthermore, the proposed multiplier has very high linearity by adopting the adaptive bias technique. Simulations of the multiplier demonstrate a nonlinearity of 0.88%, a THD of 1.3%, a -3dB bandwidth of 768kHz, and a power consumption of 1.12μW under the condition that V_DD = 1.0V.