一种实用化的数字体温测量算法及其ASIC实现

A practical temperature measure algorithm and The ASIC Design for digital thermometer

传统电子体温计芯片采用大量复杂模拟模块,功耗和成本都较高。文章提出了一种适合电子体温计芯片采用的温度测量算法,基于上华(CSMC)1.0μm MGLVCMOS标准工艺,设计出实用化的数字体温测量电路,并绘制了整个电路的版图。利用Spectre、Verilog_XL及Matlab对系统电路进行仿真测试,结果显示所设计的数字体温测量电路在+32.0℃～+42.0℃(+90.0°F～+108.0°F)的温度范围内可以实现摄氏和华氏两种模式的测量,具有±0.1℃(±0.2°F)的精度,1.5V电源电压下系统平均电流仅为100μA,整个电路呈现低功耗和高集成度的特点。

The traditional design of electronic thermometer uses lots of complicated analog circuits which means higher power consumption and cost. A novel temperature measure algorithm is presented. The algorithm is more suitable for realization by ASIC. With CSMC 1.0μm MGLV topological technology design rule, the practical digital thermometer circuit and the layout are designed. It is verified by the Spcetre,Verilog XL and Matlab simulator, and simulation results show that the system manages to achieve the accuracy of ±-0.1 ℃ （±0.2°F） in range of ＋32.0℃-＋42.0℃ （＋90.0°F-＋108.0°F） and offers both Centigrade and Fahrenheit results. The average current of this system is 100μA with 1.5V power supply. The circuit presents low power consumption and high integration characteristic.