I am working on a project that requires finding a temperature sensor with an accuracy close to +/- 0.02C. I've been searching on Mouser and Digikey and have found multiple that have achieved this requirement; however, most of them have a response time/time constant of 0.5s - 1s. For this project I must find a temp. sensor that has a response time in the ms range (something like 50ms or less). The reason for this is because I need to have this sensor sample at a rate of 20Hz or higher.