Stress mode circuit for an integrated circuit with on-chip voltage down converter.

摘要

A stress mode circuit is provided on an integrated circuit memory to generate a voltage that is either (a) equal to a reference voltage (VREF), or (b) is proportional to an external supply voltage VCCEXT. The circuit includes two voltage divider circuits (60) to provide the proportional voltage. Two differential amplifiers (72, 74, 76, 78, 80, 82; 94, 96, 98, 100, 102, 104) are provided to generate outputs corresponding to a comparison to the proportion voltage and the reference voltage (VREF). The outputs operate switches (52, 64) that couple the reference voltage (VREF) or the proportional voltage to an output terminal.