A low power-integrated temperature sensor interface circuit

被引：0
|
作者：
Ren, Mingyuan [1 ]
Yang, Huijing [2 ]
Zhang, Beining [2 ]
Zheng, Guoxu [2 ]
机构：
[1] Jinhua Adv Res Inst, 99 Huanchengnan Rd, Jinhua 321013, Zhejiang, Peoples R China
[2] Harbin Univ Sci & Technol, 52 Xuefu Rd, Harbin 150080, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2022年 / 36卷 / 06期
基金：
黑龙江省自然科学基金;
关键词：
Temperature sensor; interface circuit; Chopper; DEM; A/D; CMOS;
D O I：
10.1142/S0217979222400070
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This paper constructs and simulates the interface circuit of a temperature sensor based on SMIC 0.18 mu m CMOS. The simulation results show that when the power supply voltage is 1.8 V, the chopper op-amp gain is 89.44 dB, the low-frequency noise is 71.83 nV/Hz,(1/2) and the temperature coefficient of the core temperature sensitive circuit is 1.7808 mV/degrees C. The sampling rate of 10-bit SAR ADC was 10 kS/s, effective bit was 9.0119, SNR was 59.3256 dB, SFDR was 68.7091 dB, and THD was -62.5859 dB. The measurement range of temperature sensor interface circuit is -50 degrees C similar to +125 degrees C, the relative temperature measurement error is +/- 0.47 degrees C, the resolution is 0.2 degrees C/LSB, and the overall average power consumption is 434.9 mu W.
引用
收藏
页数：9
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