Patent ID: 6577980
Filing Date: 2003-06-10
Classification: G01R

Abstract:
A method for testing an integrated circuit (IC), the IC having a first pad configured as a signal interface for components external to the IC, the first pad having a receiver configured to receive a signal from a component external to the IC and to provide a digital signal in response thereto, said method comprising:electrically interconnecting automated test equipment (ATE) with the IC; providing at least one stimulus from the ATE to the IC such that the IC measures a receiver trip-level characteristic of the first pad; and receiving information corresponding to a receiver trip-level characteristic of the first wherein providing at least one stimulus from the ATE comprises: enabling an analog pass gate of the IC to provide a first analog voltage to the receiver of the first pad; and determining a response of the receiver to the first analog voltage; and enabling the ATE to provide a second analog voltage to the receiver of the first pad; and determining a response of the receiver to the second analog voltage, the second analog voltage corresponding to a predicted value of the first analog voltage provided by the IC.