【摘要】 基于SAR ADC结构采用0.18μm CMOS工艺设计实现了一种宽温度区间传感器单片集成电路。感温电路基于双极型晶体管的PTAT特性设计，并使用动态匹配技术减小失配，使用斩波技术减小噪声。为了在宽感温区间工作，在SAR ADC的逻辑部分设计了一种改进的TSPC寄存器。仿真结果显示芯片可在-110℃～+120℃温度区间内工作，测温精度为-3.2℃～+3.3℃。芯片内核面积为0.42 mm~2,功耗为9.76 mW。更多还原

【Abstract】 A digital SAR ADC-based temperature sensor in 0.18 μm CMOS process is presented. The temperature sensing circuit is designed based on the PTAT characteristics of bipolar transistors, and it uses dynamic matching technology to reduce mismatch and chopper technology to reduce noise. In order to expand the temperature measurement range, the improved TSPC register is used in the SAR ADC logic circuit. The simulation results show that the temperature measurement range of the temperature sensor is-110 ℃～+120 ℃,and the temperature measurement accuracy is-3.2 ℃～+3.3 ℃. The chip aera is 0.42 mm~2 and its power consumption is 9.76 mW.更多还原