Abstract
A latch-up-like failure phenomenon that shows hysteresis in the V/sub cc/-I/sub cc/ characteristics observed in a high-density CMOS dynamic RAM that utilizes an on-chip substrate-bias generator is discussed. This failure is caused by large substrate-current generation due to the depletion-mode threshold voltage of n-channel transistors at near-zero substrate-bias operation. It is increasingly important not only to design a powerful substrate-bias generator but also to suppress the back-gate bias effect on the n-channel transistor.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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