Patent ID: 6777971
Filing Date: 2004-08-17
Classification: G01R

Abstract:
An apparatus for performing a wafer sort test comprising:(a) a wafer comprising a plurality of dies, each die comprising: a plurality of die bonding pads, at least one die bonding pad coupled to an input of a receiver input and another die bonding pad coupled to an output of a transmitter; a built in self test circuit which generates test data to be transmitted through the transmitter and analyzes the test data received at the input of the receiver; and (b) a probe card comprising a plurality of probe bonding pads for coupling to the plurality of die bonding pads, the probe bonding pads coupled to the die bonding pads, an interconnect in the probe card connecting probe bonding pads to route test data transmitted on the output of the transmitter in the die to the input of the receiver in the die.