OUTPUT DATA NOISE REDUCTION METHOD OF SEMICONDUCTOR APPARATUS AND SEMICONDUCTOR APPARATUS FOR IMPLEMENTING THE METHOD

摘要

A semiconductor device includes a plurality of output buffers and a data noise measurement unit. The output buffers are driven by a power voltage and a ground voltage, and outputs received data. The data noise measurement unit measures the size of data noise from output data of a specific output buffer of the output buffers, and generates a slew rate adjustment signal for adjusting a slew rate of the output buffers, based on the measurement result. [Reference numerals] (210) AC component extractor; (220) Amplifier; (230) Rectifier; (240) Analog-to-digital converter