温度测量ADI

简介：

问：would u please recommend IC type for the below application: distance is 50m, temperature range is 30-120.?
答： ADT7561 can measure remote diode temperature sensor. It has the ability to eliminate the resistance in series.The resistance is 1Kohm. I think it can reach 50m. But we didn"t do the experiment for 50m distance. 12 feet is definitely can be reached by

问：传感器在片外与传感器在片内的温度测量有何不同?所带来的误差有多大?因为传感器在片外,可保持测量芯片在较低的环境温度.
答： It is the same method to measure temperature between inside and outside sensor of the chip. the difference is outside sensor will effected by external noise.

问：比较精密的温度测量有什么温度传感器，比如0.01度，能否推荐一下？
答： No solution from IC point to reach that accuracy.

问：DAC的输出与温度成正比,通过什么方式和补偿来实现?
答： You can use the voltage output type temperature sensor to compensate it or find btter temperature coeffiecients voltage reference like ADR42x family as the voltage reference for this ADC.

问：what is the biggest distance to your IC"s application for long distance temperature measurement? and how do your products reduce the distance error?
答： 12 feet is the maximum distance we can reach. Use twist pair line and our internal compensation circuits will reduce the errors to minimum.

问：集成温度传感器适合测量大气温度吗？精度为0.1度
答： No, the maximum accuracy from ADI is 0.5 degree C.

问：Are there any possible failure modes in digital sensors? When I use sensors I should consider FMEA.
答： We don"t have the FMEA.

问：我想问一下AD590　、PN结温度传感器、　pt100他们之间有什么本质上的区别及应用场合的区别！谢谢！
答： AD590 is the PN junction temp sensor, PT100 is a RTD. This is their difference. And PT100 is large but have good linearity and wide temp range. Semiconductor sensor will be small but narrow range.

问：如果测温IC与MCU距离较远，如大于10米，如何与MCU相连
答： If this is a case. I would like to suggest you to use the temperature sensor integrated with the controller. TMP05 might be the right choice for your application.

问：测量大气温度适用集成温度传感器吗？
答： ADT741x family is good candidate for your application.