A Compact Low-Voltage Analog CMOS Exponential Function Generator

A compact and low-voltage analog CMOS exponential function generator which operates with a single power supply voltage is designed in 0.18μm CMOS standard technology. The proposed circuit uses a current input voltage divider in order to perform the pseudo approximation to implement the exponential function generator. Simulation results using HSPICE shows more than 15 dB output voltage range while the error less than ±0.5dB .The total power consumption is below 0.2 mW with a single 1.5 V power supply. Keywords - CMOS Analog Integrated Circuit, Exponential Function Generator, Pseudo Exponential, High-Accurate, Low- Voltage Circuit.