System and method for controlling input buffer biasing current

An integrated circuit device, comprising:

• an integrated circuit;
• and
• at least one input buffer circuit operably coupled to the integrated circuit, including:
• an input current detector circuit configured to generate a plurality of discrete biasing control signals;
• and
• at least one input buffer configured to adjust a biasing current in response to the plurality of discrete biasing control signals, the plurality of discrete biasing control signals generated in response to variations in biasing current of the at least one input buffer.

A semiconductor wafer comprising an integrated circuit device fabricated on its surface, the integrated circuit device comprising:

• an integrated circuit;
• and
• at least one input buffer circuit coupled to the integrated circuit, including:
• an input current detector circuit configured to generate a plurality of discrete biasing control signals;
• and
• at least one input buffer configured to adjust a biasing current in response to the plurality of discrete biasing control signals, the plurality of discrete biasing control signals generated in response to variations in biasing current of the at least one input buffer.

A method for altering biasing current in an input buffer circuit, comprising:

• comparing a representative bias current indicator from a replica of an input buffer with a reference current to determine variations in biasing current of at least one input buffer;
• generating a plurality of discrete biasing control signals indicating a configuration of a biasing control for the at least one input buffer;
• and
• biasing the at least one input buffer according to the plurality of discrete biasing control signals.