A 0.7 V R‐2R SAR ladder‐based temperature sensor with less supply sensitivity

Abstract

A 0.7 V, R-2R SAR ladder-based temperature sensor with less supply sensitivity is presented, intended for Very Large-Scale Integration thermal management. Its silicided and non-silicided resistors in the R-2R ladders serve as both thermal sensing and quantization elements. The only active component it requires is the comparator, which is compatible with low power supply voltage. The post-layout simulation results show it has an inaccuracy of 0.5°C between -40°C and 125°C for TT, FF and SS corners.