用於溫度感應器之正比絕對溫度電流與能帶隙參考電流產生器

Abstract

此論文描述了可攜於深次微米製程且以台灣積體電路公司0.25微米製程製成之正比絕對溫度電流與能帶隙參考電流產生器的設計與實現。此提出的電路包括了正比絕對溫度電流產生器，能帶隙參考電流產生器，功率重置電路與曲線矯正電路。此提出的正比絕對溫度電流的溫度誤差不超過攝氏一度且能帶隙參考電流的最大溫度係數為每攝氏一度變化30微安培。以功率重置電路取代了初始啟動電路降低了百分之九的功率消耗且曲線矯正電路改善了能帶隙參考電流在低溫時的準確度。此提出的電路整體功率消耗為550微瓦特，其面積為260微米*200微米。

This thesis describes the design and implementation of proportional to absolute temperature (PTAT) and bandgap reference (BGR) current generators, which are portable with deep sub-micron process and fabricated by TSMC 0.25μm technology. The proposed circuits consist of PTAT current generator, BGR current generator, power-on-reset (POR) circuit and curvature corrected circuit. The temperature error of proposed PTAT current does not exceed one degree, and the maximum temperature coefficient of proposed BGR is about 30ppm per one degree. The POR circuit replaces start-up circuit to reduce the power dissipation about 9%, and the curvature corrected circuit improves the accuracy of BGR in low temperature. The overall power dissipation of proposed design is 550μW, and the area is 260μm*200μm