Temperature-Adaptive Back-Bias Voltage Generator for an RCAT Pseudo SRAM

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Executive Summary

In order to guarantee the proper operation of a Recessed Channel Array Transistor (RCAT) pseudo SRAM, the back-bias voltage must be changed in response to changes in temperature. Due to cell drivability and leakage current, the obtainable back-bias range also changes with temperature. This paper presents a pseudo SRAM for mobile applications with an adaptive back-bias voltage generator with a Negative Temperature Dependency (NTD) using an NTD VBB detector. The proposed scheme is implemented using the Samsung 100 nm RCAT pseudo SRAM process technology.

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