Offset calibration for low power and high performance receiver

• Main Authors: ARCUDIA KENNETH LUIS, CHEN MINHAN
• Format: Patent
• Language: English
• Published: 05.07.2016
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; PULSE TECHNIQUE; RESONATORS; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

Systems and methods for providing offset calibration for low power and high performance receivers are described herein. In one embodiment, a method for offset calibration comprises inputting a first voltage to a first input of a sample latch, and inputting a second voltage and an offset-cancellation voltage to a second input of the sample latch. The method also comprises adjusting the offset-cancellation voltage, observing an output of the sample latch as the offset-cancellation voltage is adjusted, and recording a value of the offset-cancellation voltage at which a metastable state is observed at the output of the sample latch. The method may be performed for each one of a plurality of different voltage levels for the first voltage to determine an offset-cancellation voltage for each one of the voltage levels.