Oscillator having compensation for a schmitt trigger response delay

摘要

An oscillator having compensation for the response delays of a Schmitt trigger has a first current source that provides a charging current to a capacitor and a second current source for providing a discharging current to the capacitor. The oscillator includes a Schmitt trigger circuit that receives a charge/discharge voltage from the capacitor and generates a square wave oscillator output signal therefrom. The oscillator further includes charge and discharge current control units that compare the charge/discharge voltage from the capacitor to respective charge and discharge threshold voltages. Based on the comparison, the control units divert the flow of charging and discharging current from the capacitor during the response delays of the Schmitt trigger circuit.