Power supply history monitor
First Claim
1. A power supply history monitor for a microelectronic circuit comprising a power supply high frequency noise signal input, an analog inverter analog delay element in series with the signal input, a sample and hold element receiving a signal from the analog delay element, an operational amplifier analog signal processor receiving an output of the sample and hold element, and an analog to digital converter receiving an analog output of the analog signal processor and producing a digital output therefrom, said power supply history monitor on a chip with the microelectronic circuit.
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Abstract
A power supply history monitor. The monitor receives a short duration anomalous signal, e.g., from a power supply, and produces a digitized signal representing the anomalous signal as an output. The monitor receives a signal from a signal input, and includes an analog delay element in series with the signal input, a sample and hold element receiving a signal from the analog delay element, an analog signal processor receiving an output of the sample and hold element, and an analog to digital converter receiving an analog output of the analog signal processor. The output of the power supply history monitor is a digital output.
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Citations
6 Claims
- 1. A power supply history monitor for a microelectronic circuit comprising a power supply high frequency noise signal input, an analog inverter analog delay element in series with the signal input, a sample and hold element receiving a signal from the analog delay element, an operational amplifier analog signal processor receiving an output of the sample and hold element, and an analog to digital converter receiving an analog output of the analog signal processor and producing a digital output therefrom, said power supply history monitor on a chip with the microelectronic circuit.
Specification
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- Resources
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Current AssigneeInternational Business Machines Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsSmith, George, Sperling, Michael
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Application NumberUS11/334,257Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current324/613CPC Class CodesG01R 31/31708 Analysis of signal quality ...G01R 31/31721 Power aspects, e.g. power s...
