A fully electronically controllable current-mode derivative PWM signal generator employing MO-CTTAs

This article presents a new current-mode derivative PWM signal generator based on MO-CTTAs (Multiple output current through transconductance amplifiers). The circuit description is very simple, its construction consists of 2 MO-CTTAs and 1 grounded capacitor without any external resistor. The output frequency and amplitude can be independently and electronically adjusted. With mentioned features, it is very suitable to realize in a monolithic chip. The PSPICE simulation results are depicted, and agree well with the theoretical anticipation. The maximum power consumption is approximately 5.73mW at ±1.5V power supply.