The current focus on power integrity is related to maintaining a low and flat impedance at high-speed devices such as memory devices, FPGAs, CPUs, and SerDes transceivers. The singular goal is to ensure a stable supply voltage, within the specified range, to these high-speed devices as their load currents are dynamically changing. This article discusses Sensitivity to Power Supply Noise, Defining Sensitivity, Defining Power Supply Noise Limits, Designing a Power Supply Noise Filter and High-Accuracy Low-Noise Regulators.
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