Monday, October 3, 2011

22.       What is the LATCH-UP problem and how to overcome it?

1 comment:

  1. Latch-up is a low resistance connection between substrate or tub and power supply rails.

    It is possible to design chips that are latch-up resistent where a layer of insulating oxide (called trench) surounds both NMOS and PMOS transistors. This breaks the parasitic SCR structure between PMOS & NMOS.

    Most silicon-on-insulator(SOI) devices are inherently latch-up resistant.

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