SONG Dengming,CHEN Zhu.A High-performance CMOS Temperature Sensor Source[J].Journal of Chengdu University of Information Technology,2019,(01):17-21.[doi:10.16836/j.cnki.jcuit.2019.01.004]
一种高性能CMOS温度传感器
- Title:
- A High-performance CMOS Temperature Sensor Source
- 文章编号:
- 2096-1618(2019)01-0017-05
- 分类号:
- TN42
- 文献标志码:
- A
- 摘要:
- 为解决现有CMOS温度传感器Sigma-Delta-ADC方案占用芯片面积较大、响应速度较慢等问题,设计了一种高性能CMOS温度传感器。利用13 bit计数器对压—频转换(V/F)电路的频率进行计数,摒弃传统方案的Sigma-Delta ADC,意味着原本占芯片面积非常大的电容门阵列不复存在。CMOS温度传感器的设计基于CSMC 0.6 μm BCD工艺,利用Cadence IC5 完成仿真与优化。在3.3 V供电电源下、温度工作范围-40 ℃～125 ℃,得到静态工作电流小于200 μA,温度分辨率0.08 ℃,测温精度±0.3 ℃以及非常高的温度转化频率。
- Abstract:
- A high performance CMOS temperature sensor is designed to solve the problem of large chip area and slow res-ponse of the existing CMOS temperature sensor Sigma-delta-ADC program. Using a 13-bit counter to count the frequency of a V-F conversion(V/F)circuit, the Sigma-Delta-ADC of the conventional solution is discarded, meaning that capacitance gate arrays, which originally occupied a very large chip area, no longer exist. The CMOS temperature sensor is based on the CSMC 0.6 μm BCD process and is emulated and optimized using Cadence IC5.Under 3.3 V power supply and working temperature is -40 ℃-125 ℃, the working current is less than 200 μA, the temperature resolution is 0.08 ℃, temperature measurement accuracy is ± 0.3 ℃ and very high temperature conversion frequency.
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备注/Memo
收稿日期:2018-01-18