温度测量ADI

简介：

问：请问贵公司的“数字温度传感器”与其它公司的产品相比有何特点?还有它的主要性能，如：分辨率、精度、功耗（工作电流）、温升和数字接口形式等等。
答： 1.wide operation temperature range:-55 to +150
2.12bit resolution, 0.5 degree accuracy.
3.supply current low to 0.1mA(ADT7414/7415)
3.ADI products support PWM/IIC/SPI/SMBUS interface

问：我是电子镇流器设计人员，在调试过程中要测试三极管(如TO-220封装)的温度，用什么方法测试最理想呢？请推荐几种方法和设备。若用热电偶测试，怎样把探头与被测体结合在一起？
答： I think the temp of TO-220 should be below 150 degree. So the semiconductor solution should be enough. TMP05/6 can be used because of their small size. And you can use the diode as the remote temp sensor, then use ADT7461 as the temp sensor. And I don"

问：我单位的温度测量主要用于供热工程中的相关测量，请问：热敏电阻、热电偶和电阻温度检测器（RTD）,与ADI公司推出的数字温度传感器集成电路（IC）为温度测量在设备的成本和测量成本上有何优缺点？
答： more accuracy, best linear, low cost, simple application circuit,direct interface to cpu.

问：能否在0-400摄氏度测量范围内相对误差为+-0.3度,重复性误差为0.1度?
答： For semiconductor temp sensor, it cannot reach 400 degree. You have to use RTD or thermal couple.

问：贵公司集成数字温度传感器如何减少远程传感器引线阻抗所引起的测温误差
答： The part ADT7461 can automatically eliminate the resistor in series brought by remote temperature sensor,so the offset can be removed.

问：贵公司集成ADC和DAC的数字温度传感器如何减少AD，DA非线性引起的测量误差？
答： INL, DNL cannot be alterated once it has been integrated. What ADI did is to use the ADC & DAC with the better INL and DNL. And many technical innovations have been adopted in our parts.

问：我厂短波发射机用假负载利用进出水温度差来计算功率，但是发射机一旦开功率就因为高频干扰温度测量发生变化。
请问：有没有能够抗高频干扰的温度测量器件或方法？
答： Shielding the RF part is a method to the condition.

问：如何对高温热电耦的串联电阻进行补偿?对热电耦的冷端如何处理?
答： You can use our AD594/5/6/7 to compensate and process the signal. For the cold junction conpensation, you can use semiconductor to implement it, TMP35 should be a good solution.

问：温度传感器和A/d同处在被测的变化的温度环境中，会对a/d结果产生多大影响？

答： Pls. refer to ADC"s Spec. in datasheet. ADI"s digital output temperature sensor can up to 0.5 degree accuracy(ADT7301) in -55 to 125 temperature range.

问：how about the interface between sensor and ADC? and how to control the error?

答： Depend on you sensor.you will need signal condition circiut between sensor and ADC. If you using digital output temperature sensor, you don"t need consider it.