Current-controlled operational transconductance amplifier based sinusoidal oscillator circuit

摘要

A current controlled operational transconductance amplifier based sinusoidal oscillator circuit that provides oscillation based on the transconductance and parasitic capacitance of the operational transconductance amplifier without externally connected capacitances. The oscillation frequency is adjusted through a variable current source or a variable resistor with a DC voltage source.

主权项

1. A current controlled operational transconductance amplifier (OTA) based sinusoidal oscillator circuit comprising:
a single active component consisting essentially of an OTA having an inverting input terminal; a non-inverting input terminal configured to be directly connected to ground; a current controlled input terminal configured to be connected to a current control source, wherein an auxiliary bias current is supplied from the current control source to the current controlled input terminal to control an oscillation frequency of the OTA; and an output terminal configured to be directly connected to the inverting terminal.