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The heat equation and the electrothermal equation are widely used in chip design, and generally supposed to be equivalent. We prove this equivalence in mathematical manner, but show that it is only valid when the boundary condition is convective. Recent technologies have a much increased leakage power, which is highly temperature-dependent. The modified thermal equations which model this dependency...
This paper presents a new method for random jitter measurement on systems-on-a-chip (SoCs) by exploiting shmoo plotting in automatic test equipment (ATE). After finding the maximum operating frequency of a microprocessor using functional test patterns that can sensitize its critical paths, the proposed method constructs a cumulative distribution function (CDF) whose standard deviation represents the...
Timing problems in high-speed serial communications are mitigated with phase-interpolator (PI) circuitry. Linearity testing of PI has been challenging, even though PI is widely used in modern high speed I/O architectures. Previous research has focused on implementing additional built-in circuits to measure PI linearity. In this paper, we present a cost effective PI linearity measurement technique...
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