Abstract:
Provided is a method for reducing output data noise of a semiconductor apparatus which includes a plurality of output buffers to output data. The method includes the steps of: driving low data to a specific output buffer among the plurality of output buffers, and driving data transiting from a high level to a low level to the other output buffers; and measuring the magnitude of data noise occurring in output data of the specific output buffer, and deciding slew rates of the plurality of output buffers based on the measurement result.
Abstract:
Provided is a semiconductor apparatus which includes a plurality of output buffers configured to connect a plurality of power sources, and a data noise measuring unit configured to fix an output data of a selected output buffer among the plurality of output buffers to have a specific level, measure a noise of the output data using a capacitance and control a slew rate of the plurality of output buffers based on the noise.
Abstract:
A power metal mesh and a semiconductor memory device including the same are provided. As the power metal mesh configured to reduce noise coupling generated between adjacent chips disposed on an interposer, a band stop filter unit including an inductor and a capacitor coupled in parallel is disposed between the adjacent chips to effectively reduce the noise coupling of a specific frequency band generated between the adjacent chips.