초록 ▼

This disclosure relates to auto-averaging RC time constant calibration are described. An auto-averaging calibration circuit includes two capacitor branches, where capacitors in the capacitor branches, charge and discharge alternately to accommodate multiple charging cycles in one measurement cycle f

This disclosure relates to auto-averaging RC time constant calibration are described. An auto-averaging calibration circuit includes two capacitor branches, where capacitors in the capacitor branches, charge and discharge alternately to accommodate multiple charging cycles in one measurement cycle for measuring a RC time constant. A value of RC time constant is obtained in each charging cycle. A final value of the RC time constant can be determined by averaging various values of the time constants obtained during each charging cycle.

대표청구항 ▼

What is claimed is: 1. A calibration circuit comprising:two capacitor branches, wherein each capacitor branch includes a current source, at least one capacitor and a switch;a resistor branch connected to the two capacitor branches, that includes a current source that induces a reference voltage and

What is claimed is: 1. A calibration circuit comprising:two capacitor branches, wherein each capacitor branch includes a current source, at least one capacitor and a switch;a resistor branch connected to the two capacitor branches, that includes a current source that induces a reference voltage and a resistor; anda counter and charge commutation control that tracks charging cycles of the capacitors as they are charged and discharged.