摘要
为了准确监测65 nm工艺的高速CPU芯片的工作温度,以保证CPU工作时风扇的运转以及过热报警,本文介绍了0.6μm的CMOS工艺设计实现的一种集成I2C总线通讯的具有远程测温功能的智能温度传感芯片.详细介绍了串联晶体管结构和Δ-ΣA/D转换技术、非重叠的控制时钟和CMOS开关的消除电荷注入误差的设计,使温度精度达到0.2℃;输出数字信号与I2C总线通讯的接口设计简化了后续信号处理和接口电路设计.测试结果表明,检测的温度范围从-15℃到95℃,本地温度误差在1℃以内,远程温度误差在0.75℃以内.
In order to accurately monitor the temperature of 65 nm process microprocessors and turn on the system fans or shutdown the system, a digital integration temperature sensor used 0.6μm standard complementary metal-oxide semiconductor（CMOS） technology with I2C management bus interface is presented in this paper, which can monitor the temperature of a remote diode. We used two series-wound bipolar, Δ-ΣA/D converter, and non-overlapping clock as well as CMOS switches.to eliminate charge injection error, which make the temperature accuracy 0.2℃. Digital signal output communicated with I2C management bus, simplifies the signal processing and interface circuit. The test result shows that the circuit can provide a resolution of 1℃ at local channel and 0.75℃ at remote channel from -15℃ to 105℃.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第2期182-185,共4页
Journal of Xiamen University：Natural Science
基金
福建省自然科学基金(2002H020)资助
