Low-Power and Wide-Input Range Voltage Controlled Linear Variable Resistor Using an FG-MOSFET and Its Application

摘要

In this paper, a voltage-controlled linear variable resistor (VCLVR) using a floating-gate MOSFET (FG-MOSFET) is proposed. First, the grounded VCLVR realization is discussed. The proposed circuit consists of only an ordinary MOSFET and an FG-MOSFET. The advantages of the proposed VCLVR are low-power and wide-input range and also the power consumption of the proposed VCLVR is the same as an ordinary passive resistor. The performance of the proposed circuits are confirmed by HSPICE simulations with a standard 0.6μm CMOS process parameters. Simulations of the proposed VCLVR demonstrate a resistance value of 40 kΩ to 338 kΩ and an input range of 4.34V within THD of less than 1.1%. Next, we proposed a new floating node linear variable resistor using the proposed VCLVR. The performance of the circuit is also evaluated through HSPICE.