I used the MAX31850K for testing. Its too slow (100ms resulting in around 7 s to wait till i know the temperature of all). I want to be able to measure them all within 1 sec. Should I try build my own or are there alternatives?
You access them all serially. Start one, wait one ms, start the next, wait one ms, etc. After 64mS, all are converting, wait another 36ms and then start reading them all back st one ms rates. Then at the worst, you have 64 results in 164ms.