Low-voltage low-power accurate CMOS VT extractor

摘要

Circuits extracting a MOSFET's threshold voltage belong to thengeneral category of bias circuits. Since these circuits do not processnsignal inputs, their power consumption should be low, while preservingnhigh accuracy and robustness of the output against supply voltagenvariations and transistor mismatch. In this work, a low-voltagenlow-power self-biased analog CMOS VT extractor is proposed.nBy utilizing novel feedback on a simple low-voltage VTnextracting block, the extractor presents less than 0.3% error for widensupply voltage range, and achieves low-power consumption andnself-compensation for second-order effects and mismatch. These featuresnare supported by simulation results