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Enhancing microprocessor immunity to power supply noise with clock-data compensation

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4 Author(s)
K. L. Wong ; Technol. Manuf. Group, Intel Corp., Hillsboro, OR, USA ; T. Rahal-Arabi ; M. Ma ; G. Taylor

This paper demonstrates an alternative to the conventional wisdom that microprocessors require a flat impedance spectrum across a broad range of frequencies in order to deliver maximum operating frequency. Delivering this impedance requires large amounts of on-die capacitance. We show through extensive analysis techniques that proper co-design of the clock and power distribution networks can relax this requirement, saving the area and leakage power needed for on-die decoupling. Measurements made on 130- and 180-nm processors validate the approach.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:41 ,  Issue: 4 )