M=(measured 10-bit integer)

   M * 0xD8A41
T= ----------- - 40
     0xF4240

M1=0
T1=-40 C

M2=1023
T2=867 C


A/D:

Vref = 5V => m = 0,0048876V

s(AD) = dM/dT = 1,1279/C = 0,005513V/C 


Preamp:

A = (200k+1.5k)/1.5k = 134,3333 => s(in) = s / A = 41,0407uV/C