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Transistor Aging

Transistor Aging

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Transistor Aging

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  1. Transistor Aging Niranjan Soundararajan

  2. Aging Timeline Clock period Start of lifetime Fails!!

  3. Transistors do age… like humans • Transistors slow down over time • Rate of aging very related to stress • Similarities exist in the cause and effect of aging

  4. Mortality rate comparison Process Variation - Systematic: You are as good as your friends

  5. Different Aging Phenomena • NBTI • Transistor holds same data for long periods • “All work and no play” • HCE • Related to amount of switching • Moving back and forth between jobs • Oxide Breakdown • Breakdown of gate-oxide between semi-conductors slowly over time • Electro-Migration • Electron flow in same direction • Blood flow

  6. Decreasing aging effects • Stress reduction mechanisms • Meditation • Decrease temperature for transistors • Load-balancing • Facelift • “Transistor Aging” related paper • Defect tolerance • Monitoring • Health periodically • Sensors on-chip to identify stressed transistors