Low-voltage FGMOS based analog building blocks

Novel floating gate MOSFET (FGMOS) based low-voltage analog circuits such as current-to-voltage converter, current-mode divider and pseudo-exponential function generator are proposed in this paper. The inherent advantages of these circuits are their simplicity, accuracy and low power dissipation. The current-to-voltage converter is operated with a single power supply of 0.9 V. The current-mode divider and pseudo-exponential function generator are operated at supply voltages of ±0.9 V. It was observed that the power dissipation of the current-to-voltage converter is reduced to 12 μW using a single power supply. The power dissipations of the current-mode divider and pseudo-exponential function generator are found to be 356 and 471 μW, respectively. The proposed circuits are simulated using SPICE in 0.5 μm CMOS process technology to demonstrate the feasibility and the effectiveness of the proposed circuits.